David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Bob Peterson | 0d0868b | 2007-12-11 18:51:25 -0600 | [diff] [blame] | 3 | * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 4 | * |
| 5 | * This copyrighted material is made available to anyone wishing to use, |
| 6 | * modify, copy, or redistribute it subject to the terms and conditions |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * Quota change tags are associated with each transaction that allocates or |
| 12 | * deallocates space. Those changes are accumulated locally to each node (in a |
| 13 | * per-node file) and then are periodically synced to the quota file. This |
| 14 | * avoids the bottleneck of constantly touching the quota file, but introduces |
| 15 | * fuzziness in the current usage value of IDs that are being used on different |
| 16 | * nodes in the cluster simultaneously. So, it is possible for a user on |
| 17 | * multiple nodes to overrun their quota, but that overrun is controlable. |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 18 | * Since quota tags are part of transactions, there is no need for a quota check |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 19 | * program to be run on node crashes or anything like that. |
| 20 | * |
| 21 | * There are couple of knobs that let the administrator manage the quota |
| 22 | * fuzziness. "quota_quantum" sets the maximum time a quota change can be |
| 23 | * sitting on one node before being synced to the quota file. (The default is |
| 24 | * 60 seconds.) Another knob, "quota_scale" controls how quickly the frequency |
| 25 | * of quota file syncs increases as the user moves closer to their limit. The |
| 26 | * more frequent the syncs, the more accurate the quota enforcement, but that |
| 27 | * means that there is more contention between the nodes for the quota file. |
| 28 | * The default value is one. This sets the maximum theoretical quota overrun |
| 29 | * (with infinite node with infinite bandwidth) to twice the user's limit. (In |
| 30 | * practice, the maximum overrun you see should be much less.) A "quota_scale" |
| 31 | * number greater than one makes quota syncs more frequent and reduces the |
| 32 | * maximum overrun. Numbers less than one (but greater than zero) make quota |
| 33 | * syncs less frequent. |
| 34 | * |
| 35 | * GFS quotas also use per-ID Lock Value Blocks (LVBs) to cache the contents of |
| 36 | * the quota file, so it is not being constantly read. |
| 37 | */ |
| 38 | |
| 39 | #include <linux/sched.h> |
| 40 | #include <linux/slab.h> |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 41 | #include <linux/mm.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 42 | #include <linux/spinlock.h> |
| 43 | #include <linux/completion.h> |
| 44 | #include <linux/buffer_head.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 45 | #include <linux/sort.h> |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 46 | #include <linux/fs.h> |
Steven Whitehouse | 2e565bb | 2006-10-02 11:38:25 -0400 | [diff] [blame] | 47 | #include <linux/bio.h> |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 48 | #include <linux/gfs2_ondisk.h> |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 49 | #include <linux/kthread.h> |
| 50 | #include <linux/freezer.h> |
Steven Whitehouse | 2ec4650 | 2009-09-28 12:49:15 +0100 | [diff] [blame] | 51 | #include <linux/quota.h> |
Steven Whitehouse | 1d371b5 | 2009-09-11 15:57:27 +0100 | [diff] [blame] | 52 | #include <linux/dqblk_xfs.h> |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 53 | #include <linux/lockref.h> |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 54 | #include <linux/list_lru.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 55 | |
| 56 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 57 | #include "incore.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 58 | #include "bmap.h" |
| 59 | #include "glock.h" |
| 60 | #include "glops.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 61 | #include "log.h" |
| 62 | #include "meta_io.h" |
| 63 | #include "quota.h" |
| 64 | #include "rgrp.h" |
| 65 | #include "super.h" |
| 66 | #include "trans.h" |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 67 | #include "inode.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 68 | #include "util.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 69 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 70 | /* Lock order: qd_lock -> qd->lockref.lock -> lru lock */ |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 71 | static DEFINE_SPINLOCK(qd_lock); |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 72 | struct list_lru gfs2_qd_lru; |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 73 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 74 | static void gfs2_qd_dispose(struct list_head *list) |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 75 | { |
| 76 | struct gfs2_quota_data *qd; |
| 77 | struct gfs2_sbd *sdp; |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 78 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 79 | while (!list_empty(list)) { |
| 80 | qd = list_entry(list->next, struct gfs2_quota_data, qd_lru); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 81 | sdp = qd->qd_gl->gl_sbd; |
| 82 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 83 | list_del(&qd->qd_lru); |
| 84 | |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 85 | /* Free from the filesystem-specific list */ |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 86 | spin_lock(&qd_lock); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 87 | list_del(&qd->qd_list); |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 88 | spin_unlock(&qd_lock); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 89 | |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 90 | gfs2_assert_warn(sdp, !qd->qd_change); |
| 91 | gfs2_assert_warn(sdp, !qd->qd_slot_count); |
| 92 | gfs2_assert_warn(sdp, !qd->qd_bh_count); |
| 93 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 94 | gfs2_glock_put(qd->qd_gl); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 95 | atomic_dec(&sdp->sd_quota_count); |
| 96 | |
| 97 | /* Delete it from the common reclaim list */ |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 98 | kmem_cache_free(gfs2_quotad_cachep, qd); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 99 | } |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | |
| 103 | static enum lru_status gfs2_qd_isolate(struct list_head *item, spinlock_t *lock, void *arg) |
| 104 | { |
| 105 | struct list_head *dispose = arg; |
| 106 | struct gfs2_quota_data *qd = list_entry(item, struct gfs2_quota_data, qd_lru); |
| 107 | |
| 108 | if (!spin_trylock(&qd->qd_lockref.lock)) |
| 109 | return LRU_SKIP; |
| 110 | |
| 111 | if (qd->qd_lockref.count == 0) { |
| 112 | lockref_mark_dead(&qd->qd_lockref); |
| 113 | list_move(&qd->qd_lru, dispose); |
| 114 | } |
| 115 | |
| 116 | spin_unlock(&qd->qd_lockref.lock); |
| 117 | return LRU_REMOVED; |
| 118 | } |
| 119 | |
| 120 | static unsigned long gfs2_qd_shrink_scan(struct shrinker *shrink, |
| 121 | struct shrink_control *sc) |
| 122 | { |
| 123 | LIST_HEAD(dispose); |
| 124 | unsigned long freed; |
| 125 | |
| 126 | if (!(sc->gfp_mask & __GFP_FS)) |
| 127 | return SHRINK_STOP; |
| 128 | |
| 129 | freed = list_lru_walk_node(&gfs2_qd_lru, sc->nid, gfs2_qd_isolate, |
| 130 | &dispose, &sc->nr_to_scan); |
| 131 | |
| 132 | gfs2_qd_dispose(&dispose); |
| 133 | |
Dave Chinner | 1ab6c49 | 2013-08-28 10:18:09 +1000 | [diff] [blame] | 134 | return freed; |
| 135 | } |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 136 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 137 | static unsigned long gfs2_qd_shrink_count(struct shrinker *shrink, |
| 138 | struct shrink_control *sc) |
Dave Chinner | 1ab6c49 | 2013-08-28 10:18:09 +1000 | [diff] [blame] | 139 | { |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 140 | return vfs_pressure_ratio(list_lru_count_node(&gfs2_qd_lru, sc->nid)); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 141 | } |
| 142 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 143 | struct shrinker gfs2_qd_shrinker = { |
| 144 | .count_objects = gfs2_qd_shrink_count, |
| 145 | .scan_objects = gfs2_qd_shrink_scan, |
| 146 | .seeks = DEFAULT_SEEKS, |
| 147 | .flags = SHRINKER_NUMA_AWARE, |
| 148 | }; |
| 149 | |
| 150 | |
Eric W. Biederman | 2f6c989 | 2013-01-31 18:33:38 -0800 | [diff] [blame] | 151 | static u64 qd2index(struct gfs2_quota_data *qd) |
| 152 | { |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 153 | struct kqid qid = qd->qd_id; |
| 154 | return (2 * (u64)from_kqid(&init_user_ns, qid)) + |
Bob Peterson | 37f7157 | 2013-05-10 11:59:18 -0400 | [diff] [blame] | 155 | ((qid.type == USRQUOTA) ? 0 : 1); |
Eric W. Biederman | 2f6c989 | 2013-01-31 18:33:38 -0800 | [diff] [blame] | 156 | } |
| 157 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 158 | static u64 qd2offset(struct gfs2_quota_data *qd) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 159 | { |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 160 | u64 offset; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 161 | |
Eric W. Biederman | 2f6c989 | 2013-01-31 18:33:38 -0800 | [diff] [blame] | 162 | offset = qd2index(qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 163 | offset *= sizeof(struct gfs2_quota); |
| 164 | |
| 165 | return offset; |
| 166 | } |
| 167 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 168 | static int qd_alloc(struct gfs2_sbd *sdp, struct kqid qid, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 169 | struct gfs2_quota_data **qdp) |
| 170 | { |
| 171 | struct gfs2_quota_data *qd; |
| 172 | int error; |
| 173 | |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 174 | qd = kmem_cache_zalloc(gfs2_quotad_cachep, GFP_NOFS); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 175 | if (!qd) |
| 176 | return -ENOMEM; |
| 177 | |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 178 | qd->qd_lockref.count = 1; |
| 179 | spin_lock_init(&qd->qd_lockref.lock); |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 180 | qd->qd_id = qid; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 181 | qd->qd_slot = -1; |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 182 | INIT_LIST_HEAD(&qd->qd_lru); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 183 | |
Eric W. Biederman | 2f6c989 | 2013-01-31 18:33:38 -0800 | [diff] [blame] | 184 | error = gfs2_glock_get(sdp, qd2index(qd), |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 185 | &gfs2_quota_glops, CREATE, &qd->qd_gl); |
| 186 | if (error) |
| 187 | goto fail; |
| 188 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 189 | *qdp = qd; |
| 190 | |
| 191 | return 0; |
| 192 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 193 | fail: |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 194 | kmem_cache_free(gfs2_quotad_cachep, qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 195 | return error; |
| 196 | } |
| 197 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 198 | static int qd_get(struct gfs2_sbd *sdp, struct kqid qid, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 199 | struct gfs2_quota_data **qdp) |
| 200 | { |
| 201 | struct gfs2_quota_data *qd = NULL, *new_qd = NULL; |
| 202 | int error, found; |
| 203 | |
| 204 | *qdp = NULL; |
| 205 | |
| 206 | for (;;) { |
| 207 | found = 0; |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 208 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 209 | list_for_each_entry(qd, &sdp->sd_quota_list, qd_list) { |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 210 | if (qid_eq(qd->qd_id, qid) && |
| 211 | lockref_get_not_dead(&qd->qd_lockref)) { |
| 212 | list_lru_del(&gfs2_qd_lru, &qd->qd_lru); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 213 | found = 1; |
| 214 | break; |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | if (!found) |
| 219 | qd = NULL; |
| 220 | |
| 221 | if (!qd && new_qd) { |
| 222 | qd = new_qd; |
| 223 | list_add(&qd->qd_list, &sdp->sd_quota_list); |
| 224 | atomic_inc(&sdp->sd_quota_count); |
| 225 | new_qd = NULL; |
| 226 | } |
| 227 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 228 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 229 | |
Steven Whitehouse | 6a6ada8 | 2009-09-15 16:30:38 +0100 | [diff] [blame] | 230 | if (qd) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 231 | if (new_qd) { |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 232 | gfs2_glock_put(new_qd->qd_gl); |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 233 | kmem_cache_free(gfs2_quotad_cachep, new_qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 234 | } |
| 235 | *qdp = qd; |
| 236 | return 0; |
| 237 | } |
| 238 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 239 | error = qd_alloc(sdp, qid, &new_qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 240 | if (error) |
| 241 | return error; |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | static void qd_hold(struct gfs2_quota_data *qd) |
| 246 | { |
| 247 | struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 248 | gfs2_assert(sdp, !__lockref_is_dead(&qd->qd_lockref)); |
| 249 | lockref_get(&qd->qd_lockref); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | static void qd_put(struct gfs2_quota_data *qd) |
| 253 | { |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 254 | if (lockref_put_or_lock(&qd->qd_lockref)) |
| 255 | return; |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 256 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 257 | qd->qd_lockref.count = 0; |
| 258 | list_lru_add(&gfs2_qd_lru, &qd->qd_lru); |
| 259 | spin_unlock(&qd->qd_lockref.lock); |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 260 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | static int slot_get(struct gfs2_quota_data *qd) |
| 264 | { |
| 265 | struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |
| 266 | unsigned int c, o = 0, b; |
| 267 | unsigned char byte = 0; |
| 268 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 269 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 270 | |
| 271 | if (qd->qd_slot_count++) { |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 272 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 273 | return 0; |
| 274 | } |
| 275 | |
| 276 | for (c = 0; c < sdp->sd_quota_chunks; c++) |
| 277 | for (o = 0; o < PAGE_SIZE; o++) { |
| 278 | byte = sdp->sd_quota_bitmap[c][o]; |
| 279 | if (byte != 0xFF) |
| 280 | goto found; |
| 281 | } |
| 282 | |
| 283 | goto fail; |
| 284 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 285 | found: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 286 | for (b = 0; b < 8; b++) |
| 287 | if (!(byte & (1 << b))) |
| 288 | break; |
| 289 | qd->qd_slot = c * (8 * PAGE_SIZE) + o * 8 + b; |
| 290 | |
| 291 | if (qd->qd_slot >= sdp->sd_quota_slots) |
| 292 | goto fail; |
| 293 | |
| 294 | sdp->sd_quota_bitmap[c][o] |= 1 << b; |
| 295 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 296 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 297 | |
| 298 | return 0; |
| 299 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 300 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 301 | qd->qd_slot_count--; |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 302 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 303 | return -ENOSPC; |
| 304 | } |
| 305 | |
| 306 | static void slot_hold(struct gfs2_quota_data *qd) |
| 307 | { |
| 308 | struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |
| 309 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 310 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 311 | gfs2_assert(sdp, qd->qd_slot_count); |
| 312 | qd->qd_slot_count++; |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 313 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 314 | } |
| 315 | |
Steven Whitehouse | 26e43a1 | 2013-10-02 14:47:02 +0100 | [diff] [blame] | 316 | static void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, |
| 317 | unsigned int bit, int new_value) |
| 318 | { |
| 319 | unsigned int c, o, b = bit; |
| 320 | int old_value; |
| 321 | |
| 322 | c = b / (8 * PAGE_SIZE); |
| 323 | b %= 8 * PAGE_SIZE; |
| 324 | o = b / 8; |
| 325 | b %= 8; |
| 326 | |
| 327 | old_value = (bitmap[c][o] & (1 << b)); |
| 328 | gfs2_assert_withdraw(sdp, !old_value != !new_value); |
| 329 | |
| 330 | if (new_value) |
| 331 | bitmap[c][o] |= 1 << b; |
| 332 | else |
| 333 | bitmap[c][o] &= ~(1 << b); |
| 334 | } |
| 335 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 336 | static void slot_put(struct gfs2_quota_data *qd) |
| 337 | { |
| 338 | struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |
| 339 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 340 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 341 | gfs2_assert(sdp, qd->qd_slot_count); |
| 342 | if (!--qd->qd_slot_count) { |
| 343 | gfs2_icbit_munge(sdp, sdp->sd_quota_bitmap, qd->qd_slot, 0); |
| 344 | qd->qd_slot = -1; |
| 345 | } |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 346 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | static int bh_get(struct gfs2_quota_data *qd) |
| 350 | { |
| 351 | struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 352 | struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 353 | unsigned int block, offset; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 354 | struct buffer_head *bh; |
| 355 | int error; |
Steven Whitehouse | 2359125 | 2006-10-13 17:25:45 -0400 | [diff] [blame] | 356 | struct buffer_head bh_map = { .b_state = 0, .b_blocknr = 0 }; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 357 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 358 | mutex_lock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 359 | |
| 360 | if (qd->qd_bh_count++) { |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 361 | mutex_unlock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 362 | return 0; |
| 363 | } |
| 364 | |
| 365 | block = qd->qd_slot / sdp->sd_qc_per_block; |
Bob Peterson | 0d0868b | 2007-12-11 18:51:25 -0600 | [diff] [blame] | 366 | offset = qd->qd_slot % sdp->sd_qc_per_block; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 367 | |
Steven Whitehouse | 2359125 | 2006-10-13 17:25:45 -0400 | [diff] [blame] | 368 | bh_map.b_size = 1 << ip->i_inode.i_blkbits; |
Bob Peterson | e9e1ef2 | 2007-12-10 14:13:27 -0600 | [diff] [blame] | 369 | error = gfs2_block_map(&ip->i_inode, block, &bh_map, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 370 | if (error) |
| 371 | goto fail; |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 372 | error = gfs2_meta_read(ip->i_gl, bh_map.b_blocknr, DIO_WAIT, &bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 373 | if (error) |
| 374 | goto fail; |
| 375 | error = -EIO; |
| 376 | if (gfs2_metatype_check(sdp, bh, GFS2_METATYPE_QC)) |
| 377 | goto fail_brelse; |
| 378 | |
| 379 | qd->qd_bh = bh; |
| 380 | qd->qd_bh_qc = (struct gfs2_quota_change *) |
| 381 | (bh->b_data + sizeof(struct gfs2_meta_header) + |
| 382 | offset * sizeof(struct gfs2_quota_change)); |
| 383 | |
Josef Whiter | 2e95b66 | 2007-02-20 00:03:29 -0500 | [diff] [blame] | 384 | mutex_unlock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 385 | |
| 386 | return 0; |
| 387 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 388 | fail_brelse: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 389 | brelse(bh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 390 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 391 | qd->qd_bh_count--; |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 392 | mutex_unlock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 393 | return error; |
| 394 | } |
| 395 | |
| 396 | static void bh_put(struct gfs2_quota_data *qd) |
| 397 | { |
| 398 | struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |
| 399 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 400 | mutex_lock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 401 | gfs2_assert(sdp, qd->qd_bh_count); |
| 402 | if (!--qd->qd_bh_count) { |
| 403 | brelse(qd->qd_bh); |
| 404 | qd->qd_bh = NULL; |
| 405 | qd->qd_bh_qc = NULL; |
| 406 | } |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 407 | mutex_unlock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 408 | } |
| 409 | |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 410 | static int qd_check_sync(struct gfs2_sbd *sdp, struct gfs2_quota_data *qd, |
| 411 | u64 *sync_gen) |
| 412 | { |
| 413 | if (test_bit(QDF_LOCKED, &qd->qd_flags) || |
| 414 | !test_bit(QDF_CHANGE, &qd->qd_flags) || |
| 415 | (sync_gen && (qd->qd_sync_gen >= *sync_gen))) |
| 416 | return 0; |
| 417 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 418 | if (!lockref_get_not_dead(&qd->qd_lockref)) |
| 419 | return 0; |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 420 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 421 | list_move_tail(&qd->qd_list, &sdp->sd_quota_list); |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 422 | set_bit(QDF_LOCKED, &qd->qd_flags); |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 423 | qd->qd_change_sync = qd->qd_change; |
| 424 | gfs2_assert_warn(sdp, qd->qd_slot_count); |
| 425 | qd->qd_slot_count++; |
| 426 | return 1; |
| 427 | } |
| 428 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 429 | static int qd_fish(struct gfs2_sbd *sdp, struct gfs2_quota_data **qdp) |
| 430 | { |
| 431 | struct gfs2_quota_data *qd = NULL; |
| 432 | int error; |
| 433 | int found = 0; |
| 434 | |
| 435 | *qdp = NULL; |
| 436 | |
| 437 | if (sdp->sd_vfs->s_flags & MS_RDONLY) |
| 438 | return 0; |
| 439 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 440 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 441 | |
| 442 | list_for_each_entry(qd, &sdp->sd_quota_list, qd_list) { |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 443 | found = qd_check_sync(sdp, qd, &sdp->sd_quota_sync_gen); |
| 444 | if (found) |
| 445 | break; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 446 | } |
| 447 | |
| 448 | if (!found) |
| 449 | qd = NULL; |
| 450 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 451 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 452 | |
| 453 | if (qd) { |
| 454 | gfs2_assert_warn(sdp, qd->qd_change_sync); |
| 455 | error = bh_get(qd); |
| 456 | if (error) { |
| 457 | clear_bit(QDF_LOCKED, &qd->qd_flags); |
| 458 | slot_put(qd); |
| 459 | qd_put(qd); |
| 460 | return error; |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | *qdp = qd; |
| 465 | |
| 466 | return 0; |
| 467 | } |
| 468 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 469 | static void qd_unlock(struct gfs2_quota_data *qd) |
| 470 | { |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 471 | gfs2_assert_warn(qd->qd_gl->gl_sbd, |
| 472 | test_bit(QDF_LOCKED, &qd->qd_flags)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 473 | clear_bit(QDF_LOCKED, &qd->qd_flags); |
| 474 | bh_put(qd); |
| 475 | slot_put(qd); |
| 476 | qd_put(qd); |
| 477 | } |
| 478 | |
Eric W. Biederman | b59c8b6 | 2013-01-31 19:35:56 -0800 | [diff] [blame] | 479 | static int qdsb_get(struct gfs2_sbd *sdp, struct kqid qid, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 480 | struct gfs2_quota_data **qdp) |
| 481 | { |
| 482 | int error; |
| 483 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 484 | error = qd_get(sdp, qid, qdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 485 | if (error) |
| 486 | return error; |
| 487 | |
| 488 | error = slot_get(*qdp); |
| 489 | if (error) |
| 490 | goto fail; |
| 491 | |
| 492 | error = bh_get(*qdp); |
| 493 | if (error) |
| 494 | goto fail_slot; |
| 495 | |
| 496 | return 0; |
| 497 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 498 | fail_slot: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 499 | slot_put(*qdp); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 500 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 501 | qd_put(*qdp); |
| 502 | return error; |
| 503 | } |
| 504 | |
| 505 | static void qdsb_put(struct gfs2_quota_data *qd) |
| 506 | { |
| 507 | bh_put(qd); |
| 508 | slot_put(qd); |
| 509 | qd_put(qd); |
| 510 | } |
| 511 | |
Eric W. Biederman | 7c06b5d | 2013-01-31 20:27:54 -0800 | [diff] [blame] | 512 | int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 513 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 514 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 515 | struct gfs2_quota_data **qd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 516 | int error; |
| 517 | |
Andrew Price | aaaf68c | 2012-10-12 16:45:08 +0100 | [diff] [blame] | 518 | if (ip->i_res == NULL) { |
| 519 | error = gfs2_rs_alloc(ip); |
| 520 | if (error) |
| 521 | return error; |
| 522 | } |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 523 | |
| 524 | qd = ip->i_res->rs_qa_qd; |
| 525 | |
| 526 | if (gfs2_assert_warn(sdp, !ip->i_res->rs_qa_qd_num) || |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 527 | gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags))) |
| 528 | return -EIO; |
| 529 | |
| 530 | if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) |
| 531 | return 0; |
| 532 | |
Eric W. Biederman | b59c8b6 | 2013-01-31 19:35:56 -0800 | [diff] [blame] | 533 | error = qdsb_get(sdp, make_kqid_uid(ip->i_inode.i_uid), qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 534 | if (error) |
| 535 | goto out; |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 536 | ip->i_res->rs_qa_qd_num++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 537 | qd++; |
| 538 | |
Eric W. Biederman | b59c8b6 | 2013-01-31 19:35:56 -0800 | [diff] [blame] | 539 | error = qdsb_get(sdp, make_kqid_gid(ip->i_inode.i_gid), qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 540 | if (error) |
| 541 | goto out; |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 542 | ip->i_res->rs_qa_qd_num++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 543 | qd++; |
| 544 | |
Eric W. Biederman | 6b24c0d | 2013-01-31 21:56:13 -0800 | [diff] [blame] | 545 | if (!uid_eq(uid, NO_UID_QUOTA_CHANGE) && |
| 546 | !uid_eq(uid, ip->i_inode.i_uid)) { |
Eric W. Biederman | b59c8b6 | 2013-01-31 19:35:56 -0800 | [diff] [blame] | 547 | error = qdsb_get(sdp, make_kqid_uid(uid), qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 548 | if (error) |
| 549 | goto out; |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 550 | ip->i_res->rs_qa_qd_num++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 551 | qd++; |
| 552 | } |
| 553 | |
Eric W. Biederman | 6b24c0d | 2013-01-31 21:56:13 -0800 | [diff] [blame] | 554 | if (!gid_eq(gid, NO_GID_QUOTA_CHANGE) && |
| 555 | !gid_eq(gid, ip->i_inode.i_gid)) { |
Eric W. Biederman | b59c8b6 | 2013-01-31 19:35:56 -0800 | [diff] [blame] | 556 | error = qdsb_get(sdp, make_kqid_gid(gid), qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 557 | if (error) |
| 558 | goto out; |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 559 | ip->i_res->rs_qa_qd_num++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 560 | qd++; |
| 561 | } |
| 562 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 563 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 564 | if (error) |
| 565 | gfs2_quota_unhold(ip); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 566 | return error; |
| 567 | } |
| 568 | |
| 569 | void gfs2_quota_unhold(struct gfs2_inode *ip) |
| 570 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 571 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 572 | unsigned int x; |
| 573 | |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 574 | if (ip->i_res == NULL) |
| 575 | return; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 576 | gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags)); |
| 577 | |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 578 | for (x = 0; x < ip->i_res->rs_qa_qd_num; x++) { |
| 579 | qdsb_put(ip->i_res->rs_qa_qd[x]); |
| 580 | ip->i_res->rs_qa_qd[x] = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 581 | } |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 582 | ip->i_res->rs_qa_qd_num = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 583 | } |
| 584 | |
| 585 | static int sort_qd(const void *a, const void *b) |
| 586 | { |
Steven Whitehouse | 48fac17 | 2006-09-05 15:17:12 -0400 | [diff] [blame] | 587 | const struct gfs2_quota_data *qd_a = *(const struct gfs2_quota_data **)a; |
| 588 | const struct gfs2_quota_data *qd_b = *(const struct gfs2_quota_data **)b; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 589 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 590 | if (qid_lt(qd_a->qd_id, qd_b->qd_id)) |
Steven Whitehouse | 48fac17 | 2006-09-05 15:17:12 -0400 | [diff] [blame] | 591 | return -1; |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 592 | if (qid_lt(qd_b->qd_id, qd_a->qd_id)) |
Steven Whitehouse | 48fac17 | 2006-09-05 15:17:12 -0400 | [diff] [blame] | 593 | return 1; |
Steven Whitehouse | 48fac17 | 2006-09-05 15:17:12 -0400 | [diff] [blame] | 594 | return 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 595 | } |
| 596 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 597 | static void do_qc(struct gfs2_quota_data *qd, s64 change) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 598 | { |
| 599 | struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 600 | struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 601 | struct gfs2_quota_change *qc = qd->qd_bh_qc; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 602 | s64 x; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 603 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 604 | mutex_lock(&sdp->sd_quota_mutex); |
Steven Whitehouse | 350a9b0 | 2012-12-14 12:36:02 +0000 | [diff] [blame] | 605 | gfs2_trans_add_meta(ip->i_gl, qd->qd_bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 606 | |
| 607 | if (!test_bit(QDF_CHANGE, &qd->qd_flags)) { |
| 608 | qc->qc_change = 0; |
| 609 | qc->qc_flags = 0; |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 610 | if (qd->qd_id.type == USRQUOTA) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 611 | qc->qc_flags = cpu_to_be32(GFS2_QCF_USER); |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 612 | qc->qc_id = cpu_to_be32(from_kqid(&init_user_ns, qd->qd_id)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 613 | } |
| 614 | |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 615 | x = be64_to_cpu(qc->qc_change) + change; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 616 | qc->qc_change = cpu_to_be64(x); |
| 617 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 618 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 619 | qd->qd_change = x; |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 620 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 621 | |
| 622 | if (!x) { |
| 623 | gfs2_assert_warn(sdp, test_bit(QDF_CHANGE, &qd->qd_flags)); |
| 624 | clear_bit(QDF_CHANGE, &qd->qd_flags); |
| 625 | qc->qc_flags = 0; |
| 626 | qc->qc_id = 0; |
| 627 | slot_put(qd); |
| 628 | qd_put(qd); |
| 629 | } else if (!test_and_set_bit(QDF_CHANGE, &qd->qd_flags)) { |
| 630 | qd_hold(qd); |
| 631 | slot_hold(qd); |
| 632 | } |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 633 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 634 | mutex_unlock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 635 | } |
| 636 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 637 | /** |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 638 | * gfs2_adjust_quota - adjust record of current block usage |
| 639 | * @ip: The quota inode |
| 640 | * @loc: Offset of the entry in the quota file |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 641 | * @change: The amount of usage change to record |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 642 | * @qd: The quota data |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 643 | * @fdq: The updated limits to record |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 644 | * |
| 645 | * This function was mostly borrowed from gfs2_block_truncate_page which was |
| 646 | * in turn mostly borrowed from ext3 |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 647 | * |
| 648 | * Returns: 0 or -ve on error |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 649 | */ |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 650 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 651 | static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc, |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 652 | s64 change, struct gfs2_quota_data *qd, |
| 653 | struct fs_disk_quota *fdq) |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 654 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 655 | struct inode *inode = &ip->i_inode; |
Abhijith Das | 14870b4 | 2010-11-18 11:24:24 -0500 | [diff] [blame] | 656 | struct gfs2_sbd *sdp = GFS2_SB(inode); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 657 | struct address_space *mapping = inode->i_mapping; |
| 658 | unsigned long index = loc >> PAGE_CACHE_SHIFT; |
Abhijith Das | 1990e91 | 2007-05-31 17:52:02 -0500 | [diff] [blame] | 659 | unsigned offset = loc & (PAGE_CACHE_SIZE - 1); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 660 | unsigned blocksize, iblock, pos; |
Steven Whitehouse | ab9bbda | 2011-08-15 14:20:36 +0100 | [diff] [blame] | 661 | struct buffer_head *bh; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 662 | struct page *page; |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 663 | void *kaddr, *ptr; |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 664 | struct gfs2_quota q; |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 665 | int err, nbytes; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 666 | u64 size; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 667 | |
Steven Whitehouse | 891a8e9 | 2011-09-19 10:25:49 +0100 | [diff] [blame] | 668 | if (gfs2_is_stuffed(ip)) { |
| 669 | err = gfs2_unstuff_dinode(ip, NULL); |
| 670 | if (err) |
| 671 | return err; |
| 672 | } |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 673 | |
| 674 | memset(&q, 0, sizeof(struct gfs2_quota)); |
Andrew Price | 4306629 | 2012-04-16 16:40:55 +0100 | [diff] [blame] | 675 | err = gfs2_internal_read(ip, (char *)&q, &loc, sizeof(q)); |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 676 | if (err < 0) |
| 677 | return err; |
| 678 | |
| 679 | err = -EIO; |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 680 | be64_add_cpu(&q.qu_value, change); |
| 681 | qd->qd_qb.qb_value = q.qu_value; |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 682 | if (fdq) { |
| 683 | if (fdq->d_fieldmask & FS_DQ_BSOFT) { |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 684 | q.qu_warn = cpu_to_be64(fdq->d_blk_softlimit >> sdp->sd_fsb2bb_shift); |
| 685 | qd->qd_qb.qb_warn = q.qu_warn; |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 686 | } |
| 687 | if (fdq->d_fieldmask & FS_DQ_BHARD) { |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 688 | q.qu_limit = cpu_to_be64(fdq->d_blk_hardlimit >> sdp->sd_fsb2bb_shift); |
| 689 | qd->qd_qb.qb_limit = q.qu_limit; |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 690 | } |
Abhijith Das | 802ec9b | 2010-11-18 11:26:46 -0500 | [diff] [blame] | 691 | if (fdq->d_fieldmask & FS_DQ_BCOUNT) { |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 692 | q.qu_value = cpu_to_be64(fdq->d_bcount >> sdp->sd_fsb2bb_shift); |
| 693 | qd->qd_qb.qb_value = q.qu_value; |
Abhijith Das | 802ec9b | 2010-11-18 11:26:46 -0500 | [diff] [blame] | 694 | } |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 695 | } |
| 696 | |
| 697 | /* Write the quota into the quota file on disk */ |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 698 | ptr = &q; |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 699 | nbytes = sizeof(struct gfs2_quota); |
| 700 | get_a_page: |
Bob Peterson | 220cca2 | 2012-03-19 15:25:50 -0400 | [diff] [blame] | 701 | page = find_or_create_page(mapping, index, GFP_NOFS); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 702 | if (!page) |
| 703 | return -ENOMEM; |
| 704 | |
| 705 | blocksize = inode->i_sb->s_blocksize; |
| 706 | iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits); |
| 707 | |
| 708 | if (!page_has_buffers(page)) |
| 709 | create_empty_buffers(page, blocksize, 0); |
| 710 | |
| 711 | bh = page_buffers(page); |
| 712 | pos = blocksize; |
| 713 | while (offset >= pos) { |
| 714 | bh = bh->b_this_page; |
| 715 | iblock++; |
| 716 | pos += blocksize; |
| 717 | } |
| 718 | |
| 719 | if (!buffer_mapped(bh)) { |
Bob Peterson | e9e1ef2 | 2007-12-10 14:13:27 -0600 | [diff] [blame] | 720 | gfs2_block_map(inode, iblock, bh, 1); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 721 | if (!buffer_mapped(bh)) |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 722 | goto unlock_out; |
| 723 | /* If it's a newly allocated disk block for quota, zero it */ |
Abhijith Das | 8b42160 | 2010-07-04 01:33:24 -0400 | [diff] [blame] | 724 | if (buffer_new(bh)) |
| 725 | zero_user(page, pos - blocksize, bh->b_size); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 726 | } |
| 727 | |
| 728 | if (PageUptodate(page)) |
| 729 | set_buffer_uptodate(bh); |
| 730 | |
| 731 | if (!buffer_uptodate(bh)) { |
Steven Whitehouse | 20ed053 | 2011-10-31 09:52:02 +0000 | [diff] [blame] | 732 | ll_rw_block(READ | REQ_META, 1, &bh); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 733 | wait_on_buffer(bh); |
| 734 | if (!buffer_uptodate(bh)) |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 735 | goto unlock_out; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 736 | } |
| 737 | |
Bob Peterson | 37f7157 | 2013-05-10 11:59:18 -0400 | [diff] [blame] | 738 | gfs2_trans_add_data(ip->i_gl, bh); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 739 | |
Cong Wang | d934928 | 2011-11-25 23:14:30 +0800 | [diff] [blame] | 740 | kaddr = kmap_atomic(page); |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 741 | if (offset + sizeof(struct gfs2_quota) > PAGE_CACHE_SIZE) |
| 742 | nbytes = PAGE_CACHE_SIZE - offset; |
| 743 | memcpy(kaddr + offset, ptr, nbytes); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 744 | flush_dcache_page(page); |
Cong Wang | d934928 | 2011-11-25 23:14:30 +0800 | [diff] [blame] | 745 | kunmap_atomic(kaddr); |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 746 | unlock_page(page); |
| 747 | page_cache_release(page); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 748 | |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 749 | /* If quota straddles page boundary, we need to update the rest of the |
| 750 | * quota at the beginning of the next page */ |
Abhijith Das | 8b42160 | 2010-07-04 01:33:24 -0400 | [diff] [blame] | 751 | if ((offset + sizeof(struct gfs2_quota)) > PAGE_CACHE_SIZE) { |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 752 | ptr = ptr + nbytes; |
| 753 | nbytes = sizeof(struct gfs2_quota) - nbytes; |
| 754 | offset = 0; |
| 755 | index++; |
| 756 | goto get_a_page; |
| 757 | } |
| 758 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 759 | size = loc + sizeof(struct gfs2_quota); |
Steven Whitehouse | a2e0f79 | 2010-08-11 09:53:11 +0100 | [diff] [blame] | 760 | if (size > inode->i_size) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 761 | i_size_write(inode, size); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 762 | inode->i_mtime = inode->i_atime = CURRENT_TIME; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 763 | mark_inode_dirty(inode); |
Bob Peterson | 500242a | 2012-05-15 14:51:54 -0400 | [diff] [blame] | 764 | return 0; |
Steven Whitehouse | ab9bbda | 2011-08-15 14:20:36 +0100 | [diff] [blame] | 765 | |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 766 | unlock_out: |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 767 | unlock_page(page); |
| 768 | page_cache_release(page); |
| 769 | return err; |
| 770 | } |
| 771 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 772 | static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda) |
| 773 | { |
| 774 | struct gfs2_sbd *sdp = (*qda)->qd_gl->gl_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 775 | struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode); |
Steven Whitehouse | 7b9cff4 | 2013-10-02 11:13:25 +0100 | [diff] [blame] | 776 | struct gfs2_alloc_parms ap = { .aflags = 0, }; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 777 | unsigned int data_blocks, ind_blocks; |
| 778 | struct gfs2_holder *ghs, i_gh; |
| 779 | unsigned int qx, x; |
| 780 | struct gfs2_quota_data *qd; |
Steven Whitehouse | 71f890f | 2012-07-30 14:53:19 +0100 | [diff] [blame] | 781 | unsigned reserved; |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 782 | loff_t offset; |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 783 | unsigned int nalloc = 0, blocks; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 784 | int error; |
| 785 | |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 786 | error = gfs2_rs_alloc(ip); |
| 787 | if (error) |
| 788 | return error; |
| 789 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 790 | gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota), |
| 791 | &data_blocks, &ind_blocks); |
| 792 | |
Josef Bacik | 16c5f06 | 2008-04-09 09:33:41 -0400 | [diff] [blame] | 793 | ghs = kcalloc(num_qd, sizeof(struct gfs2_holder), GFP_NOFS); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 794 | if (!ghs) |
| 795 | return -ENOMEM; |
| 796 | |
| 797 | sort(qda, num_qd, sizeof(struct gfs2_quota_data *), sort_qd, NULL); |
Jan Kara | 56aa72d | 2012-09-05 16:55:11 -0400 | [diff] [blame] | 798 | mutex_lock(&ip->i_inode.i_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 799 | for (qx = 0; qx < num_qd; qx++) { |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 800 | error = gfs2_glock_nq_init(qda[qx]->qd_gl, LM_ST_EXCLUSIVE, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 801 | GL_NOCACHE, &ghs[qx]); |
| 802 | if (error) |
| 803 | goto out; |
| 804 | } |
| 805 | |
| 806 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); |
| 807 | if (error) |
| 808 | goto out; |
| 809 | |
| 810 | for (x = 0; x < num_qd; x++) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 811 | offset = qd2offset(qda[x]); |
Bob Peterson | 461cb41 | 2010-06-24 19:21:20 -0400 | [diff] [blame] | 812 | if (gfs2_write_alloc_required(ip, offset, |
| 813 | sizeof(struct gfs2_quota))) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 814 | nalloc++; |
| 815 | } |
| 816 | |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 817 | /* |
| 818 | * 1 blk for unstuffing inode if stuffed. We add this extra |
| 819 | * block to the reservation unconditionally. If the inode |
| 820 | * doesn't need unstuffing, the block will be released to the |
| 821 | * rgrp since it won't be allocated during the transaction |
| 822 | */ |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 823 | /* +3 in the end for unstuffing block, inode size update block |
| 824 | * and another block in case quota straddles page boundary and |
| 825 | * two blocks need to be updated instead of 1 */ |
| 826 | blocks = num_qd * data_blocks + RES_DINODE + num_qd + 3; |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 827 | |
Steven Whitehouse | 71f890f | 2012-07-30 14:53:19 +0100 | [diff] [blame] | 828 | reserved = 1 + (nalloc * (data_blocks + ind_blocks)); |
Steven Whitehouse | 7b9cff4 | 2013-10-02 11:13:25 +0100 | [diff] [blame] | 829 | ap.target = reserved; |
| 830 | error = gfs2_inplace_reserve(ip, &ap); |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 831 | if (error) |
| 832 | goto out_alloc; |
| 833 | |
| 834 | if (nalloc) |
Steven Whitehouse | 71f890f | 2012-07-30 14:53:19 +0100 | [diff] [blame] | 835 | blocks += gfs2_rg_blocks(ip, reserved) + nalloc * ind_blocks + RES_STATFS; |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 836 | |
| 837 | error = gfs2_trans_begin(sdp, blocks, 0); |
| 838 | if (error) |
| 839 | goto out_ipres; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 840 | |
| 841 | for (x = 0; x < num_qd; x++) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 842 | qd = qda[x]; |
| 843 | offset = qd2offset(qd); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 844 | error = gfs2_adjust_quota(ip, offset, qd->qd_change_sync, qd, NULL); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 845 | if (error) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 846 | goto out_end_trans; |
| 847 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 848 | do_qc(qd, -qd->qd_change_sync); |
Abhijith Das | 662e3a5 | 2011-03-08 10:40:42 -0500 | [diff] [blame] | 849 | set_bit(QDF_REFRESH, &qd->qd_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 850 | } |
| 851 | |
| 852 | error = 0; |
| 853 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 854 | out_end_trans: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 855 | gfs2_trans_end(sdp); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 856 | out_ipres: |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 857 | gfs2_inplace_release(ip); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 858 | out_alloc: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 859 | gfs2_glock_dq_uninit(&i_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 860 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 861 | while (qx--) |
| 862 | gfs2_glock_dq_uninit(&ghs[qx]); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 863 | mutex_unlock(&ip->i_inode.i_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 864 | kfree(ghs); |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 865 | gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 866 | return error; |
| 867 | } |
| 868 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 869 | static int update_qd(struct gfs2_sbd *sdp, struct gfs2_quota_data *qd) |
| 870 | { |
| 871 | struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode); |
| 872 | struct gfs2_quota q; |
| 873 | struct gfs2_quota_lvb *qlvb; |
| 874 | loff_t pos; |
| 875 | int error; |
| 876 | |
| 877 | memset(&q, 0, sizeof(struct gfs2_quota)); |
| 878 | pos = qd2offset(qd); |
Andrew Price | 4306629 | 2012-04-16 16:40:55 +0100 | [diff] [blame] | 879 | error = gfs2_internal_read(ip, (char *)&q, &pos, sizeof(q)); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 880 | if (error < 0) |
| 881 | return error; |
| 882 | |
David Teigland | 4e2f884 | 2012-11-14 13:47:37 -0500 | [diff] [blame] | 883 | qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lksb.sb_lvbptr; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 884 | qlvb->qb_magic = cpu_to_be32(GFS2_MAGIC); |
| 885 | qlvb->__pad = 0; |
| 886 | qlvb->qb_limit = q.qu_limit; |
| 887 | qlvb->qb_warn = q.qu_warn; |
| 888 | qlvb->qb_value = q.qu_value; |
| 889 | qd->qd_qb = *qlvb; |
| 890 | |
| 891 | return 0; |
| 892 | } |
| 893 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 894 | static int do_glock(struct gfs2_quota_data *qd, int force_refresh, |
| 895 | struct gfs2_holder *q_gh) |
| 896 | { |
| 897 | struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 898 | struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 899 | struct gfs2_holder i_gh; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 900 | int error; |
| 901 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 902 | restart: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 903 | error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_SHARED, 0, q_gh); |
| 904 | if (error) |
| 905 | return error; |
| 906 | |
David Teigland | 4e2f884 | 2012-11-14 13:47:37 -0500 | [diff] [blame] | 907 | qd->qd_qb = *(struct gfs2_quota_lvb *)qd->qd_gl->gl_lksb.sb_lvbptr; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 908 | |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 909 | if (force_refresh || qd->qd_qb.qb_magic != cpu_to_be32(GFS2_MAGIC)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 910 | gfs2_glock_dq_uninit(q_gh); |
Steven Whitehouse | 91094d0 | 2009-09-11 15:21:56 +0100 | [diff] [blame] | 911 | error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_EXCLUSIVE, |
| 912 | GL_NOCACHE, q_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 913 | if (error) |
| 914 | return error; |
| 915 | |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 916 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 917 | if (error) |
| 918 | goto fail; |
| 919 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 920 | error = update_qd(sdp, qd); |
| 921 | if (error) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 922 | goto fail_gunlock; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 923 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 924 | gfs2_glock_dq_uninit(&i_gh); |
Steven Whitehouse | 91094d0 | 2009-09-11 15:21:56 +0100 | [diff] [blame] | 925 | gfs2_glock_dq_uninit(q_gh); |
| 926 | force_refresh = 0; |
| 927 | goto restart; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 928 | } |
| 929 | |
| 930 | return 0; |
| 931 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 932 | fail_gunlock: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 933 | gfs2_glock_dq_uninit(&i_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 934 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 935 | gfs2_glock_dq_uninit(q_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 936 | return error; |
| 937 | } |
| 938 | |
Eric W. Biederman | 7c06b5d | 2013-01-31 20:27:54 -0800 | [diff] [blame] | 939 | int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 940 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 941 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
Abhijith Das | 662e3a5 | 2011-03-08 10:40:42 -0500 | [diff] [blame] | 942 | struct gfs2_quota_data *qd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 943 | unsigned int x; |
| 944 | int error = 0; |
| 945 | |
Steven Whitehouse | 891a8e9 | 2011-09-19 10:25:49 +0100 | [diff] [blame] | 946 | error = gfs2_quota_hold(ip, uid, gid); |
| 947 | if (error) |
| 948 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 949 | |
| 950 | if (capable(CAP_SYS_RESOURCE) || |
| 951 | sdp->sd_args.ar_quota != GFS2_QUOTA_ON) |
| 952 | return 0; |
| 953 | |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 954 | sort(ip->i_res->rs_qa_qd, ip->i_res->rs_qa_qd_num, |
| 955 | sizeof(struct gfs2_quota_data *), sort_qd, NULL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 956 | |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 957 | for (x = 0; x < ip->i_res->rs_qa_qd_num; x++) { |
Abhijith Das | 662e3a5 | 2011-03-08 10:40:42 -0500 | [diff] [blame] | 958 | int force = NO_FORCE; |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 959 | qd = ip->i_res->rs_qa_qd[x]; |
Abhijith Das | 662e3a5 | 2011-03-08 10:40:42 -0500 | [diff] [blame] | 960 | if (test_and_clear_bit(QDF_REFRESH, &qd->qd_flags)) |
| 961 | force = FORCE; |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 962 | error = do_glock(qd, force, &ip->i_res->rs_qa_qd_ghs[x]); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 963 | if (error) |
| 964 | break; |
| 965 | } |
| 966 | |
| 967 | if (!error) |
| 968 | set_bit(GIF_QD_LOCKED, &ip->i_flags); |
| 969 | else { |
| 970 | while (x--) |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 971 | gfs2_glock_dq_uninit(&ip->i_res->rs_qa_qd_ghs[x]); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 972 | gfs2_quota_unhold(ip); |
| 973 | } |
| 974 | |
| 975 | return error; |
| 976 | } |
| 977 | |
| 978 | static int need_sync(struct gfs2_quota_data *qd) |
| 979 | { |
| 980 | struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |
| 981 | struct gfs2_tune *gt = &sdp->sd_tune; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 982 | s64 value; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 983 | unsigned int num, den; |
| 984 | int do_sync = 1; |
| 985 | |
| 986 | if (!qd->qd_qb.qb_limit) |
| 987 | return 0; |
| 988 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 989 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 990 | value = qd->qd_change; |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 991 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 992 | |
| 993 | spin_lock(>->gt_spin); |
| 994 | num = gt->gt_quota_scale_num; |
| 995 | den = gt->gt_quota_scale_den; |
| 996 | spin_unlock(>->gt_spin); |
| 997 | |
| 998 | if (value < 0) |
| 999 | do_sync = 0; |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 1000 | else if ((s64)be64_to_cpu(qd->qd_qb.qb_value) >= |
| 1001 | (s64)be64_to_cpu(qd->qd_qb.qb_limit)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1002 | do_sync = 0; |
| 1003 | else { |
| 1004 | value *= gfs2_jindex_size(sdp) * num; |
David Howells | 4abaca17 | 2008-07-11 14:39:56 +0100 | [diff] [blame] | 1005 | value = div_s64(value, den); |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 1006 | value += (s64)be64_to_cpu(qd->qd_qb.qb_value); |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1007 | if (value < (s64)be64_to_cpu(qd->qd_qb.qb_limit)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1008 | do_sync = 0; |
| 1009 | } |
| 1010 | |
| 1011 | return do_sync; |
| 1012 | } |
| 1013 | |
| 1014 | void gfs2_quota_unlock(struct gfs2_inode *ip) |
| 1015 | { |
Steven Whitehouse | aabd7c7 | 2013-10-04 11:31:05 +0100 | [diff] [blame] | 1016 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1017 | struct gfs2_quota_data *qda[4]; |
| 1018 | unsigned int count = 0; |
| 1019 | unsigned int x; |
Steven Whitehouse | aabd7c7 | 2013-10-04 11:31:05 +0100 | [diff] [blame] | 1020 | int found; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1021 | |
| 1022 | if (!test_and_clear_bit(GIF_QD_LOCKED, &ip->i_flags)) |
| 1023 | goto out; |
| 1024 | |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 1025 | for (x = 0; x < ip->i_res->rs_qa_qd_num; x++) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1026 | struct gfs2_quota_data *qd; |
| 1027 | int sync; |
| 1028 | |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 1029 | qd = ip->i_res->rs_qa_qd[x]; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1030 | sync = need_sync(qd); |
| 1031 | |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 1032 | gfs2_glock_dq_uninit(&ip->i_res->rs_qa_qd_ghs[x]); |
Steven Whitehouse | aabd7c7 | 2013-10-04 11:31:05 +0100 | [diff] [blame] | 1033 | if (!sync) |
| 1034 | continue; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1035 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1036 | spin_lock(&qd_lock); |
Steven Whitehouse | aabd7c7 | 2013-10-04 11:31:05 +0100 | [diff] [blame] | 1037 | found = qd_check_sync(sdp, qd, NULL); |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1038 | spin_unlock(&qd_lock); |
Steven Whitehouse | aabd7c7 | 2013-10-04 11:31:05 +0100 | [diff] [blame] | 1039 | |
| 1040 | if (!found) |
| 1041 | continue; |
| 1042 | |
| 1043 | gfs2_assert_warn(sdp, qd->qd_change_sync); |
| 1044 | if (bh_get(qd)) { |
| 1045 | clear_bit(QDF_LOCKED, &qd->qd_flags); |
| 1046 | slot_put(qd); |
| 1047 | qd_put(qd); |
| 1048 | continue; |
| 1049 | } |
| 1050 | |
| 1051 | qda[count++] = qd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1052 | } |
| 1053 | |
| 1054 | if (count) { |
| 1055 | do_sync(count, qda); |
| 1056 | for (x = 0; x < count; x++) |
| 1057 | qd_unlock(qda[x]); |
| 1058 | } |
| 1059 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1060 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1061 | gfs2_quota_unhold(ip); |
| 1062 | } |
| 1063 | |
| 1064 | #define MAX_LINE 256 |
| 1065 | |
| 1066 | static int print_message(struct gfs2_quota_data *qd, char *type) |
| 1067 | { |
| 1068 | struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1069 | |
Steven Whitehouse | 2ec4650 | 2009-09-28 12:49:15 +0100 | [diff] [blame] | 1070 | printk(KERN_INFO "GFS2: fsid=%s: quota %s for %s %u\n", |
Steven Whitehouse | 02630a1 | 2006-07-03 11:20:06 -0400 | [diff] [blame] | 1071 | sdp->sd_fsname, type, |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1072 | (qd->qd_id.type == USRQUOTA) ? "user" : "group", |
| 1073 | from_kqid(&init_user_ns, qd->qd_id)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1074 | |
| 1075 | return 0; |
| 1076 | } |
| 1077 | |
Eric W. Biederman | 7c06b5d | 2013-01-31 20:27:54 -0800 | [diff] [blame] | 1078 | int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1079 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1080 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1081 | struct gfs2_quota_data *qd; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1082 | s64 value; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1083 | unsigned int x; |
| 1084 | int error = 0; |
| 1085 | |
| 1086 | if (!test_bit(GIF_QD_LOCKED, &ip->i_flags)) |
| 1087 | return 0; |
| 1088 | |
| 1089 | if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON) |
| 1090 | return 0; |
| 1091 | |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 1092 | for (x = 0; x < ip->i_res->rs_qa_qd_num; x++) { |
| 1093 | qd = ip->i_res->rs_qa_qd[x]; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1094 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1095 | if (!(qid_eq(qd->qd_id, make_kqid_uid(uid)) || |
| 1096 | qid_eq(qd->qd_id, make_kqid_gid(gid)))) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1097 | continue; |
| 1098 | |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 1099 | value = (s64)be64_to_cpu(qd->qd_qb.qb_value); |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1100 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1101 | value += qd->qd_change; |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1102 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1103 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1104 | if (be64_to_cpu(qd->qd_qb.qb_limit) && (s64)be64_to_cpu(qd->qd_qb.qb_limit) < value) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1105 | print_message(qd, "exceeded"); |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1106 | quota_send_warning(qd->qd_id, |
Steven Whitehouse | 2ec4650 | 2009-09-28 12:49:15 +0100 | [diff] [blame] | 1107 | sdp->sd_vfs->s_dev, QUOTA_NL_BHARDWARN); |
| 1108 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1109 | error = -EDQUOT; |
| 1110 | break; |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 1111 | } else if (be64_to_cpu(qd->qd_qb.qb_warn) && |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1112 | (s64)be64_to_cpu(qd->qd_qb.qb_warn) < value && |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1113 | time_after_eq(jiffies, qd->qd_last_warn + |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 1114 | gfs2_tune_get(sdp, |
| 1115 | gt_quota_warn_period) * HZ)) { |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1116 | quota_send_warning(qd->qd_id, |
Steven Whitehouse | 2ec4650 | 2009-09-28 12:49:15 +0100 | [diff] [blame] | 1117 | sdp->sd_vfs->s_dev, QUOTA_NL_BSOFTWARN); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1118 | error = print_message(qd, "warning"); |
| 1119 | qd->qd_last_warn = jiffies; |
| 1120 | } |
| 1121 | } |
| 1122 | |
| 1123 | return error; |
| 1124 | } |
| 1125 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1126 | void gfs2_quota_change(struct gfs2_inode *ip, s64 change, |
Eric W. Biederman | 7c06b5d | 2013-01-31 20:27:54 -0800 | [diff] [blame] | 1127 | kuid_t uid, kgid_t gid) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1128 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1129 | struct gfs2_quota_data *qd; |
| 1130 | unsigned int x; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1131 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1132 | if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), change)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1133 | return; |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 1134 | if (ip->i_diskflags & GFS2_DIF_SYSTEM) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1135 | return; |
| 1136 | |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 1137 | for (x = 0; x < ip->i_res->rs_qa_qd_num; x++) { |
| 1138 | qd = ip->i_res->rs_qa_qd[x]; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1139 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1140 | if (qid_eq(qd->qd_id, make_kqid_uid(uid)) || |
| 1141 | qid_eq(qd->qd_id, make_kqid_gid(gid))) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1142 | do_qc(qd, change); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1143 | } |
| 1144 | } |
| 1145 | } |
| 1146 | |
Jan Kara | ceed172 | 2012-07-03 16:45:28 +0200 | [diff] [blame] | 1147 | int gfs2_quota_sync(struct super_block *sb, int type) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1148 | { |
Steven Whitehouse | 8c42d63 | 2009-09-11 14:36:44 +0100 | [diff] [blame] | 1149 | struct gfs2_sbd *sdp = sb->s_fs_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1150 | struct gfs2_quota_data **qda; |
Steven Whitehouse | bef292a | 2013-10-03 18:43:20 +0100 | [diff] [blame] | 1151 | unsigned int max_qd = PAGE_SIZE/sizeof(struct gfs2_holder); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1152 | unsigned int num_qd; |
| 1153 | unsigned int x; |
| 1154 | int error = 0; |
| 1155 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1156 | qda = kcalloc(max_qd, sizeof(struct gfs2_quota_data *), GFP_KERNEL); |
| 1157 | if (!qda) |
| 1158 | return -ENOMEM; |
| 1159 | |
Steven Whitehouse | e46c772 | 2013-10-04 12:29:34 +0100 | [diff] [blame] | 1160 | mutex_lock(&sdp->sd_quota_sync_mutex); |
| 1161 | sdp->sd_quota_sync_gen++; |
| 1162 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1163 | do { |
| 1164 | num_qd = 0; |
| 1165 | |
| 1166 | for (;;) { |
| 1167 | error = qd_fish(sdp, qda + num_qd); |
| 1168 | if (error || !qda[num_qd]) |
| 1169 | break; |
| 1170 | if (++num_qd == max_qd) |
| 1171 | break; |
| 1172 | } |
| 1173 | |
| 1174 | if (num_qd) { |
| 1175 | if (!error) |
| 1176 | error = do_sync(num_qd, qda); |
| 1177 | if (!error) |
| 1178 | for (x = 0; x < num_qd; x++) |
| 1179 | qda[x]->qd_sync_gen = |
| 1180 | sdp->sd_quota_sync_gen; |
| 1181 | |
| 1182 | for (x = 0; x < num_qd; x++) |
| 1183 | qd_unlock(qda[x]); |
| 1184 | } |
| 1185 | } while (!error && num_qd == max_qd); |
| 1186 | |
Steven Whitehouse | e46c772 | 2013-10-04 12:29:34 +0100 | [diff] [blame] | 1187 | mutex_unlock(&sdp->sd_quota_sync_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1188 | kfree(qda); |
| 1189 | |
| 1190 | return error; |
| 1191 | } |
| 1192 | |
Eric W. Biederman | ed87dab | 2013-01-31 19:42:40 -0800 | [diff] [blame] | 1193 | int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1194 | { |
| 1195 | struct gfs2_quota_data *qd; |
| 1196 | struct gfs2_holder q_gh; |
| 1197 | int error; |
| 1198 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1199 | error = qd_get(sdp, qid, &qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1200 | if (error) |
| 1201 | return error; |
| 1202 | |
| 1203 | error = do_glock(qd, FORCE, &q_gh); |
| 1204 | if (!error) |
| 1205 | gfs2_glock_dq_uninit(&q_gh); |
| 1206 | |
| 1207 | qd_put(qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1208 | return error; |
| 1209 | } |
| 1210 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1211 | int gfs2_quota_init(struct gfs2_sbd *sdp) |
| 1212 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1213 | struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode); |
Steven Whitehouse | a2e0f79 | 2010-08-11 09:53:11 +0100 | [diff] [blame] | 1214 | u64 size = i_size_read(sdp->sd_qc_inode); |
| 1215 | unsigned int blocks = size >> sdp->sd_sb.sb_bsize_shift; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1216 | unsigned int x, slot = 0; |
| 1217 | unsigned int found = 0; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1218 | u64 dblock; |
| 1219 | u32 extlen = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1220 | int error; |
| 1221 | |
Steven Whitehouse | a2e0f79 | 2010-08-11 09:53:11 +0100 | [diff] [blame] | 1222 | if (gfs2_check_internal_file_size(sdp->sd_qc_inode, 1, 64 << 20)) |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 1223 | return -EIO; |
Steven Whitehouse | a2e0f79 | 2010-08-11 09:53:11 +0100 | [diff] [blame] | 1224 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1225 | sdp->sd_quota_slots = blocks * sdp->sd_qc_per_block; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 1226 | sdp->sd_quota_chunks = DIV_ROUND_UP(sdp->sd_quota_slots, 8 * PAGE_SIZE); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1227 | |
| 1228 | error = -ENOMEM; |
| 1229 | |
| 1230 | sdp->sd_quota_bitmap = kcalloc(sdp->sd_quota_chunks, |
Josef Bacik | 16c5f06 | 2008-04-09 09:33:41 -0400 | [diff] [blame] | 1231 | sizeof(unsigned char *), GFP_NOFS); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1232 | if (!sdp->sd_quota_bitmap) |
| 1233 | return error; |
| 1234 | |
| 1235 | for (x = 0; x < sdp->sd_quota_chunks; x++) { |
Josef Bacik | 16c5f06 | 2008-04-09 09:33:41 -0400 | [diff] [blame] | 1236 | sdp->sd_quota_bitmap[x] = kzalloc(PAGE_SIZE, GFP_NOFS); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1237 | if (!sdp->sd_quota_bitmap[x]) |
| 1238 | goto fail; |
| 1239 | } |
| 1240 | |
| 1241 | for (x = 0; x < blocks; x++) { |
| 1242 | struct buffer_head *bh; |
Steven Whitehouse | 7aed98f | 2013-11-26 15:17:09 +0000 | [diff] [blame^] | 1243 | const struct gfs2_quota_change *qc; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1244 | unsigned int y; |
| 1245 | |
| 1246 | if (!extlen) { |
| 1247 | int new = 0; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1248 | error = gfs2_extent_map(&ip->i_inode, x, &new, &dblock, &extlen); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1249 | if (error) |
| 1250 | goto fail; |
| 1251 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1252 | error = -EIO; |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 1253 | bh = gfs2_meta_ra(ip->i_gl, dblock, extlen); |
| 1254 | if (!bh) |
| 1255 | goto fail; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1256 | if (gfs2_metatype_check(sdp, bh, GFS2_METATYPE_QC)) { |
| 1257 | brelse(bh); |
| 1258 | goto fail; |
| 1259 | } |
| 1260 | |
Steven Whitehouse | 7aed98f | 2013-11-26 15:17:09 +0000 | [diff] [blame^] | 1261 | qc = (const struct gfs2_quota_change *)(bh->b_data + sizeof(struct gfs2_meta_header)); |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 1262 | for (y = 0; y < sdp->sd_qc_per_block && slot < sdp->sd_quota_slots; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1263 | y++, slot++) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1264 | struct gfs2_quota_data *qd; |
Steven Whitehouse | 7aed98f | 2013-11-26 15:17:09 +0000 | [diff] [blame^] | 1265 | s64 qc_change = be64_to_cpu(qc->qc_change); |
| 1266 | u32 qc_flags = be32_to_cpu(qc->qc_flags); |
| 1267 | enum quota_type qtype = (qc_flags & GFS2_QCF_USER) ? |
| 1268 | USRQUOTA : GRPQUOTA; |
| 1269 | struct kqid qc_id = make_kqid(&init_user_ns, qtype, |
| 1270 | be32_to_cpu(qc->qc_id)); |
| 1271 | qc++; |
| 1272 | if (!qc_change) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1273 | continue; |
| 1274 | |
Steven Whitehouse | 7aed98f | 2013-11-26 15:17:09 +0000 | [diff] [blame^] | 1275 | error = qd_alloc(sdp, qc_id, &qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1276 | if (error) { |
| 1277 | brelse(bh); |
| 1278 | goto fail; |
| 1279 | } |
| 1280 | |
| 1281 | set_bit(QDF_CHANGE, &qd->qd_flags); |
Steven Whitehouse | 7aed98f | 2013-11-26 15:17:09 +0000 | [diff] [blame^] | 1282 | qd->qd_change = qc_change; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1283 | qd->qd_slot = slot; |
| 1284 | qd->qd_slot_count = 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1285 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1286 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1287 | gfs2_icbit_munge(sdp, sdp->sd_quota_bitmap, slot, 1); |
| 1288 | list_add(&qd->qd_list, &sdp->sd_quota_list); |
| 1289 | atomic_inc(&sdp->sd_quota_count); |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1290 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1291 | |
| 1292 | found++; |
| 1293 | } |
| 1294 | |
| 1295 | brelse(bh); |
| 1296 | dblock++; |
| 1297 | extlen--; |
| 1298 | } |
| 1299 | |
| 1300 | if (found) |
| 1301 | fs_info(sdp, "found %u quota changes\n", found); |
| 1302 | |
| 1303 | return 0; |
| 1304 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1305 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1306 | gfs2_quota_cleanup(sdp); |
| 1307 | return error; |
| 1308 | } |
| 1309 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1310 | void gfs2_quota_cleanup(struct gfs2_sbd *sdp) |
| 1311 | { |
| 1312 | struct list_head *head = &sdp->sd_quota_list; |
| 1313 | struct gfs2_quota_data *qd; |
| 1314 | unsigned int x; |
| 1315 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1316 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1317 | while (!list_empty(head)) { |
| 1318 | qd = list_entry(head->prev, struct gfs2_quota_data, qd_list); |
| 1319 | |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 1320 | /* |
| 1321 | * To be removed in due course... we should be able to |
| 1322 | * ensure that all refs to the qd have done by this point |
| 1323 | * so that this rather odd test is not required |
| 1324 | */ |
| 1325 | spin_lock(&qd->qd_lockref.lock); |
| 1326 | if (qd->qd_lockref.count > 1 || |
| 1327 | (qd->qd_lockref.count && !test_bit(QDF_CHANGE, &qd->qd_flags))) { |
| 1328 | spin_unlock(&qd->qd_lockref.lock); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 1329 | list_move(&qd->qd_list, head); |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1330 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1331 | schedule(); |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1332 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1333 | continue; |
| 1334 | } |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 1335 | spin_unlock(&qd->qd_lockref.lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1336 | |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 1337 | list_del(&qd->qd_list); |
| 1338 | /* Also remove if this qd exists in the reclaim list */ |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 1339 | list_lru_del(&gfs2_qd_lru, &qd->qd_lru); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 1340 | atomic_dec(&sdp->sd_quota_count); |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1341 | spin_unlock(&qd_lock); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 1342 | |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 1343 | if (!qd->qd_lockref.count) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1344 | gfs2_assert_warn(sdp, !qd->qd_change); |
| 1345 | gfs2_assert_warn(sdp, !qd->qd_slot_count); |
| 1346 | } else |
| 1347 | gfs2_assert_warn(sdp, qd->qd_slot_count == 1); |
| 1348 | gfs2_assert_warn(sdp, !qd->qd_bh_count); |
| 1349 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1350 | gfs2_glock_put(qd->qd_gl); |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1351 | kmem_cache_free(gfs2_quotad_cachep, qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1352 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1353 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1354 | } |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1355 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1356 | |
| 1357 | gfs2_assert_warn(sdp, !atomic_read(&sdp->sd_quota_count)); |
| 1358 | |
| 1359 | if (sdp->sd_quota_bitmap) { |
| 1360 | for (x = 0; x < sdp->sd_quota_chunks; x++) |
| 1361 | kfree(sdp->sd_quota_bitmap[x]); |
| 1362 | kfree(sdp->sd_quota_bitmap); |
| 1363 | } |
| 1364 | } |
| 1365 | |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1366 | static void quotad_error(struct gfs2_sbd *sdp, const char *msg, int error) |
| 1367 | { |
| 1368 | if (error == 0 || error == -EROFS) |
| 1369 | return; |
| 1370 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) |
| 1371 | fs_err(sdp, "gfs2_quotad: %s error %d\n", msg, error); |
| 1372 | } |
| 1373 | |
| 1374 | static void quotad_check_timeo(struct gfs2_sbd *sdp, const char *msg, |
Steven Whitehouse | 8c42d63 | 2009-09-11 14:36:44 +0100 | [diff] [blame] | 1375 | int (*fxn)(struct super_block *sb, int type), |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1376 | unsigned long t, unsigned long *timeo, |
| 1377 | unsigned int *new_timeo) |
| 1378 | { |
| 1379 | if (t >= *timeo) { |
Steven Whitehouse | 8c42d63 | 2009-09-11 14:36:44 +0100 | [diff] [blame] | 1380 | int error = fxn(sdp->sd_vfs, 0); |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1381 | quotad_error(sdp, msg, error); |
| 1382 | *timeo = gfs2_tune_get_i(&sdp->sd_tune, new_timeo) * HZ; |
| 1383 | } else { |
| 1384 | *timeo -= t; |
| 1385 | } |
| 1386 | } |
| 1387 | |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 1388 | static void quotad_check_trunc_list(struct gfs2_sbd *sdp) |
| 1389 | { |
| 1390 | struct gfs2_inode *ip; |
| 1391 | |
| 1392 | while(1) { |
| 1393 | ip = NULL; |
| 1394 | spin_lock(&sdp->sd_trunc_lock); |
| 1395 | if (!list_empty(&sdp->sd_trunc_list)) { |
| 1396 | ip = list_entry(sdp->sd_trunc_list.next, |
| 1397 | struct gfs2_inode, i_trunc_list); |
| 1398 | list_del_init(&ip->i_trunc_list); |
| 1399 | } |
| 1400 | spin_unlock(&sdp->sd_trunc_lock); |
| 1401 | if (ip == NULL) |
| 1402 | return; |
| 1403 | gfs2_glock_finish_truncate(ip); |
| 1404 | } |
| 1405 | } |
| 1406 | |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1407 | void gfs2_wake_up_statfs(struct gfs2_sbd *sdp) { |
| 1408 | if (!sdp->sd_statfs_force_sync) { |
| 1409 | sdp->sd_statfs_force_sync = 1; |
| 1410 | wake_up(&sdp->sd_quota_wait); |
| 1411 | } |
| 1412 | } |
| 1413 | |
| 1414 | |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1415 | /** |
| 1416 | * gfs2_quotad - Write cached quota changes into the quota file |
| 1417 | * @sdp: Pointer to GFS2 superblock |
| 1418 | * |
| 1419 | */ |
| 1420 | |
| 1421 | int gfs2_quotad(void *data) |
| 1422 | { |
| 1423 | struct gfs2_sbd *sdp = data; |
| 1424 | struct gfs2_tune *tune = &sdp->sd_tune; |
| 1425 | unsigned long statfs_timeo = 0; |
| 1426 | unsigned long quotad_timeo = 0; |
| 1427 | unsigned long t = 0; |
| 1428 | DEFINE_WAIT(wait); |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 1429 | int empty; |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1430 | |
| 1431 | while (!kthread_should_stop()) { |
| 1432 | |
| 1433 | /* Update the master statfs file */ |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1434 | if (sdp->sd_statfs_force_sync) { |
| 1435 | int error = gfs2_statfs_sync(sdp->sd_vfs, 0); |
| 1436 | quotad_error(sdp, "statfs", error); |
| 1437 | statfs_timeo = gfs2_tune_get(sdp, gt_statfs_quantum) * HZ; |
| 1438 | } |
| 1439 | else |
| 1440 | quotad_check_timeo(sdp, "statfs", gfs2_statfs_sync, t, |
| 1441 | &statfs_timeo, |
| 1442 | &tune->gt_statfs_quantum); |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1443 | |
| 1444 | /* Update quota file */ |
Steven Whitehouse | edd2e9a | 2013-06-03 11:12:59 +0100 | [diff] [blame] | 1445 | quotad_check_timeo(sdp, "sync", gfs2_quota_sync, t, |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1446 | "ad_timeo, &tune->gt_quota_quantum); |
| 1447 | |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 1448 | /* Check for & recover partially truncated inodes */ |
| 1449 | quotad_check_trunc_list(sdp); |
| 1450 | |
Tejun Heo | a0acae0 | 2011-11-21 12:32:22 -0800 | [diff] [blame] | 1451 | try_to_freeze(); |
| 1452 | |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1453 | t = min(quotad_timeo, statfs_timeo); |
| 1454 | |
Steven Whitehouse | 7fa5d20 | 2009-03-31 15:49:08 +0100 | [diff] [blame] | 1455 | prepare_to_wait(&sdp->sd_quota_wait, &wait, TASK_INTERRUPTIBLE); |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 1456 | spin_lock(&sdp->sd_trunc_lock); |
| 1457 | empty = list_empty(&sdp->sd_trunc_list); |
| 1458 | spin_unlock(&sdp->sd_trunc_lock); |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1459 | if (empty && !sdp->sd_statfs_force_sync) |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 1460 | t -= schedule_timeout(t); |
| 1461 | else |
| 1462 | t = 0; |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1463 | finish_wait(&sdp->sd_quota_wait, &wait); |
| 1464 | } |
| 1465 | |
| 1466 | return 0; |
| 1467 | } |
| 1468 | |
Steven Whitehouse | 1d371b5 | 2009-09-11 15:57:27 +0100 | [diff] [blame] | 1469 | static int gfs2_quota_get_xstate(struct super_block *sb, |
| 1470 | struct fs_quota_stat *fqs) |
| 1471 | { |
| 1472 | struct gfs2_sbd *sdp = sb->s_fs_info; |
| 1473 | |
| 1474 | memset(fqs, 0, sizeof(struct fs_quota_stat)); |
| 1475 | fqs->qs_version = FS_QSTAT_VERSION; |
Christoph Hellwig | ad6bb90 | 2010-05-05 00:10:56 +0200 | [diff] [blame] | 1476 | |
| 1477 | switch (sdp->sd_args.ar_quota) { |
| 1478 | case GFS2_QUOTA_ON: |
Christoph Hellwig | ade7ce3 | 2010-06-04 10:56:01 +0200 | [diff] [blame] | 1479 | fqs->qs_flags |= (FS_QUOTA_UDQ_ENFD | FS_QUOTA_GDQ_ENFD); |
Christoph Hellwig | ad6bb90 | 2010-05-05 00:10:56 +0200 | [diff] [blame] | 1480 | /*FALLTHRU*/ |
| 1481 | case GFS2_QUOTA_ACCOUNT: |
Christoph Hellwig | ade7ce3 | 2010-06-04 10:56:01 +0200 | [diff] [blame] | 1482 | fqs->qs_flags |= (FS_QUOTA_UDQ_ACCT | FS_QUOTA_GDQ_ACCT); |
Christoph Hellwig | ad6bb90 | 2010-05-05 00:10:56 +0200 | [diff] [blame] | 1483 | break; |
| 1484 | case GFS2_QUOTA_OFF: |
| 1485 | break; |
| 1486 | } |
| 1487 | |
Steven Whitehouse | 1d371b5 | 2009-09-11 15:57:27 +0100 | [diff] [blame] | 1488 | if (sdp->sd_quota_inode) { |
| 1489 | fqs->qs_uquota.qfs_ino = GFS2_I(sdp->sd_quota_inode)->i_no_addr; |
| 1490 | fqs->qs_uquota.qfs_nblks = sdp->sd_quota_inode->i_blocks; |
| 1491 | } |
| 1492 | fqs->qs_uquota.qfs_nextents = 1; /* unsupported */ |
| 1493 | fqs->qs_gquota = fqs->qs_uquota; /* its the same inode in both cases */ |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 1494 | fqs->qs_incoredqs = list_lru_count(&gfs2_qd_lru); |
Steven Whitehouse | 1d371b5 | 2009-09-11 15:57:27 +0100 | [diff] [blame] | 1495 | return 0; |
| 1496 | } |
| 1497 | |
Eric W. Biederman | 74a8a10 | 2012-09-16 02:07:49 -0700 | [diff] [blame] | 1498 | static int gfs2_get_dqblk(struct super_block *sb, struct kqid qid, |
Christoph Hellwig | b9b2dd3 | 2010-05-06 17:04:58 -0400 | [diff] [blame] | 1499 | struct fs_disk_quota *fdq) |
Steven Whitehouse | 113d6b3 | 2009-09-28 11:52:16 +0100 | [diff] [blame] | 1500 | { |
| 1501 | struct gfs2_sbd *sdp = sb->s_fs_info; |
| 1502 | struct gfs2_quota_lvb *qlvb; |
| 1503 | struct gfs2_quota_data *qd; |
| 1504 | struct gfs2_holder q_gh; |
| 1505 | int error; |
| 1506 | |
| 1507 | memset(fdq, 0, sizeof(struct fs_disk_quota)); |
| 1508 | |
| 1509 | if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) |
| 1510 | return -ESRCH; /* Crazy XFS error code */ |
| 1511 | |
Eric W. Biederman | 236c64e | 2013-01-31 20:09:30 -0800 | [diff] [blame] | 1512 | if ((qid.type != USRQUOTA) && |
| 1513 | (qid.type != GRPQUOTA)) |
Steven Whitehouse | 113d6b3 | 2009-09-28 11:52:16 +0100 | [diff] [blame] | 1514 | return -EINVAL; |
| 1515 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1516 | error = qd_get(sdp, qid, &qd); |
Steven Whitehouse | 113d6b3 | 2009-09-28 11:52:16 +0100 | [diff] [blame] | 1517 | if (error) |
| 1518 | return error; |
| 1519 | error = do_glock(qd, FORCE, &q_gh); |
| 1520 | if (error) |
| 1521 | goto out; |
| 1522 | |
David Teigland | 4e2f884 | 2012-11-14 13:47:37 -0500 | [diff] [blame] | 1523 | qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lksb.sb_lvbptr; |
Steven Whitehouse | 113d6b3 | 2009-09-28 11:52:16 +0100 | [diff] [blame] | 1524 | fdq->d_version = FS_DQUOT_VERSION; |
Eric W. Biederman | 236c64e | 2013-01-31 20:09:30 -0800 | [diff] [blame] | 1525 | fdq->d_flags = (qid.type == USRQUOTA) ? FS_USER_QUOTA : FS_GROUP_QUOTA; |
Eric W. Biederman | 558e852 | 2013-01-31 18:15:33 -0800 | [diff] [blame] | 1526 | fdq->d_id = from_kqid_munged(current_user_ns(), qid); |
Abhijith Das | 14870b4 | 2010-11-18 11:24:24 -0500 | [diff] [blame] | 1527 | fdq->d_blk_hardlimit = be64_to_cpu(qlvb->qb_limit) << sdp->sd_fsb2bb_shift; |
| 1528 | fdq->d_blk_softlimit = be64_to_cpu(qlvb->qb_warn) << sdp->sd_fsb2bb_shift; |
| 1529 | fdq->d_bcount = be64_to_cpu(qlvb->qb_value) << sdp->sd_fsb2bb_shift; |
Steven Whitehouse | 113d6b3 | 2009-09-28 11:52:16 +0100 | [diff] [blame] | 1530 | |
| 1531 | gfs2_glock_dq_uninit(&q_gh); |
| 1532 | out: |
| 1533 | qd_put(qd); |
| 1534 | return error; |
| 1535 | } |
| 1536 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1537 | /* GFS2 only supports a subset of the XFS fields */ |
Abhijith Das | 802ec9b | 2010-11-18 11:26:46 -0500 | [diff] [blame] | 1538 | #define GFS2_FIELDMASK (FS_DQ_BSOFT|FS_DQ_BHARD|FS_DQ_BCOUNT) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1539 | |
Eric W. Biederman | 74a8a10 | 2012-09-16 02:07:49 -0700 | [diff] [blame] | 1540 | static int gfs2_set_dqblk(struct super_block *sb, struct kqid qid, |
Christoph Hellwig | c472b43 | 2010-05-06 17:05:17 -0400 | [diff] [blame] | 1541 | struct fs_disk_quota *fdq) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1542 | { |
| 1543 | struct gfs2_sbd *sdp = sb->s_fs_info; |
| 1544 | struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode); |
| 1545 | struct gfs2_quota_data *qd; |
| 1546 | struct gfs2_holder q_gh, i_gh; |
| 1547 | unsigned int data_blocks, ind_blocks; |
| 1548 | unsigned int blocks = 0; |
| 1549 | int alloc_required; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1550 | loff_t offset; |
| 1551 | int error; |
| 1552 | |
| 1553 | if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) |
| 1554 | return -ESRCH; /* Crazy XFS error code */ |
| 1555 | |
Eric W. Biederman | 236c64e | 2013-01-31 20:09:30 -0800 | [diff] [blame] | 1556 | if ((qid.type != USRQUOTA) && |
| 1557 | (qid.type != GRPQUOTA)) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1558 | return -EINVAL; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1559 | |
| 1560 | if (fdq->d_fieldmask & ~GFS2_FIELDMASK) |
| 1561 | return -EINVAL; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1562 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1563 | error = qd_get(sdp, qid, &qd); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1564 | if (error) |
| 1565 | return error; |
| 1566 | |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 1567 | error = gfs2_rs_alloc(ip); |
| 1568 | if (error) |
| 1569 | goto out_put; |
| 1570 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1571 | mutex_lock(&ip->i_inode.i_mutex); |
| 1572 | error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_EXCLUSIVE, 0, &q_gh); |
| 1573 | if (error) |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 1574 | goto out_unlockput; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1575 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); |
| 1576 | if (error) |
| 1577 | goto out_q; |
| 1578 | |
| 1579 | /* Check for existing entry, if none then alloc new blocks */ |
| 1580 | error = update_qd(sdp, qd); |
| 1581 | if (error) |
| 1582 | goto out_i; |
| 1583 | |
| 1584 | /* If nothing has changed, this is a no-op */ |
| 1585 | if ((fdq->d_fieldmask & FS_DQ_BSOFT) && |
Abhijith Das | 14870b4 | 2010-11-18 11:24:24 -0500 | [diff] [blame] | 1586 | ((fdq->d_blk_softlimit >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_warn))) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1587 | fdq->d_fieldmask ^= FS_DQ_BSOFT; |
Abhijith Das | 802ec9b | 2010-11-18 11:26:46 -0500 | [diff] [blame] | 1588 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1589 | if ((fdq->d_fieldmask & FS_DQ_BHARD) && |
Abhijith Das | 14870b4 | 2010-11-18 11:24:24 -0500 | [diff] [blame] | 1590 | ((fdq->d_blk_hardlimit >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_limit))) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1591 | fdq->d_fieldmask ^= FS_DQ_BHARD; |
Abhijith Das | 802ec9b | 2010-11-18 11:26:46 -0500 | [diff] [blame] | 1592 | |
| 1593 | if ((fdq->d_fieldmask & FS_DQ_BCOUNT) && |
| 1594 | ((fdq->d_bcount >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_value))) |
| 1595 | fdq->d_fieldmask ^= FS_DQ_BCOUNT; |
| 1596 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1597 | if (fdq->d_fieldmask == 0) |
| 1598 | goto out_i; |
| 1599 | |
| 1600 | offset = qd2offset(qd); |
Bob Peterson | 461cb41 | 2010-06-24 19:21:20 -0400 | [diff] [blame] | 1601 | alloc_required = gfs2_write_alloc_required(ip, offset, sizeof(struct gfs2_quota)); |
Abhijith Das | e79a46a | 2011-02-07 11:22:41 -0500 | [diff] [blame] | 1602 | if (gfs2_is_stuffed(ip)) |
| 1603 | alloc_required = 1; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1604 | if (alloc_required) { |
Steven Whitehouse | 7b9cff4 | 2013-10-02 11:13:25 +0100 | [diff] [blame] | 1605 | struct gfs2_alloc_parms ap = { .aflags = 0, }; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1606 | gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota), |
| 1607 | &data_blocks, &ind_blocks); |
Bob Peterson | 564e12b | 2011-11-21 13:36:17 -0500 | [diff] [blame] | 1608 | blocks = 1 + data_blocks + ind_blocks; |
Steven Whitehouse | 7b9cff4 | 2013-10-02 11:13:25 +0100 | [diff] [blame] | 1609 | ap.target = blocks; |
| 1610 | error = gfs2_inplace_reserve(ip, &ap); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1611 | if (error) |
Bob Peterson | 564e12b | 2011-11-21 13:36:17 -0500 | [diff] [blame] | 1612 | goto out_i; |
Steven Whitehouse | 71f890f | 2012-07-30 14:53:19 +0100 | [diff] [blame] | 1613 | blocks += gfs2_rg_blocks(ip, blocks); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1614 | } |
| 1615 | |
Abhijith Das | e79a46a | 2011-02-07 11:22:41 -0500 | [diff] [blame] | 1616 | /* Some quotas span block boundaries and can update two blocks, |
| 1617 | adding an extra block to the transaction to handle such quotas */ |
| 1618 | error = gfs2_trans_begin(sdp, blocks + RES_DINODE + 2, 0); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1619 | if (error) |
| 1620 | goto out_release; |
| 1621 | |
| 1622 | /* Apply changes */ |
| 1623 | error = gfs2_adjust_quota(ip, offset, 0, qd, fdq); |
| 1624 | |
| 1625 | gfs2_trans_end(sdp); |
| 1626 | out_release: |
Bob Peterson | 564e12b | 2011-11-21 13:36:17 -0500 | [diff] [blame] | 1627 | if (alloc_required) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1628 | gfs2_inplace_release(ip); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1629 | out_i: |
| 1630 | gfs2_glock_dq_uninit(&i_gh); |
| 1631 | out_q: |
| 1632 | gfs2_glock_dq_uninit(&q_gh); |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 1633 | out_unlockput: |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1634 | mutex_unlock(&ip->i_inode.i_mutex); |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 1635 | out_put: |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1636 | qd_put(qd); |
| 1637 | return error; |
| 1638 | } |
| 1639 | |
Steven Whitehouse | cc632e7 | 2009-09-15 09:59:02 +0100 | [diff] [blame] | 1640 | const struct quotactl_ops gfs2_quotactl_ops = { |
| 1641 | .quota_sync = gfs2_quota_sync, |
Steven Whitehouse | 1d371b5 | 2009-09-11 15:57:27 +0100 | [diff] [blame] | 1642 | .get_xstate = gfs2_quota_get_xstate, |
Christoph Hellwig | b9b2dd3 | 2010-05-06 17:04:58 -0400 | [diff] [blame] | 1643 | .get_dqblk = gfs2_get_dqblk, |
Christoph Hellwig | c472b43 | 2010-05-06 17:05:17 -0400 | [diff] [blame] | 1644 | .set_dqblk = gfs2_set_dqblk, |
Steven Whitehouse | cc632e7 | 2009-09-15 09:59:02 +0100 | [diff] [blame] | 1645 | }; |