David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Steven Whitehouse | 3a8a9a1 | 2006-05-18 15:09:15 -0400 | [diff] [blame] | 3 | * Copyright (C) 2004-2006 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 | |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame] | 10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 11 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 12 | #include <linux/sched.h> |
| 13 | #include <linux/slab.h> |
| 14 | #include <linux/spinlock.h> |
| 15 | #include <linux/completion.h> |
| 16 | #include <linux/buffer_head.h> |
Steven Whitehouse | d0dc80d | 2006-03-29 14:36:49 -0500 | [diff] [blame] | 17 | #include <linux/kallsyms.h> |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 18 | #include <linux/gfs2_ondisk.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 19 | |
| 20 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 21 | #include "incore.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 22 | #include "glock.h" |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 23 | #include "inode.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 24 | #include "log.h" |
| 25 | #include "lops.h" |
| 26 | #include "meta_io.h" |
| 27 | #include "trans.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 28 | #include "util.h" |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 29 | #include "trace_gfs2.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 30 | |
Steven Whitehouse | d0dc80d | 2006-03-29 14:36:49 -0500 | [diff] [blame] | 31 | int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks, |
| 32 | unsigned int revokes) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 33 | { |
| 34 | struct gfs2_trans *tr; |
| 35 | int error; |
| 36 | |
Steven Whitehouse | d0dc80d | 2006-03-29 14:36:49 -0500 | [diff] [blame] | 37 | BUG_ON(current->journal_info); |
| 38 | BUG_ON(blocks == 0 && revokes == 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 39 | |
Steven Whitehouse | a1c0643 | 2009-05-13 10:56:52 +0100 | [diff] [blame] | 40 | if (!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) |
| 41 | return -EROFS; |
| 42 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 43 | tr = kzalloc(sizeof(struct gfs2_trans), GFP_NOFS); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 44 | if (!tr) |
| 45 | return -ENOMEM; |
| 46 | |
Steven Whitehouse | d0dc80d | 2006-03-29 14:36:49 -0500 | [diff] [blame] | 47 | tr->tr_ip = (unsigned long)__builtin_return_address(0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 48 | tr->tr_blocks = blocks; |
| 49 | tr->tr_revokes = revokes; |
| 50 | tr->tr_reserved = 1; |
Benjamin Marzinski | 2497255 | 2014-05-01 22:26:55 -0500 | [diff] [blame] | 51 | tr->tr_alloced = 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 52 | if (blocks) |
Steven Whitehouse | f4154ea | 2006-04-11 14:49:06 -0400 | [diff] [blame] | 53 | tr->tr_reserved += 6 + blocks; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 54 | if (revokes) |
| 55 | tr->tr_reserved += gfs2_struct2blk(sdp, revokes, |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 56 | sizeof(u64)); |
Steven Whitehouse | d69a3c6 | 2014-02-21 15:22:35 +0000 | [diff] [blame] | 57 | INIT_LIST_HEAD(&tr->tr_databuf); |
| 58 | INIT_LIST_HEAD(&tr->tr_buf); |
| 59 | |
Jan Kara | 39263d5e | 2012-06-12 16:20:41 +0200 | [diff] [blame] | 60 | sb_start_intwrite(sdp->sd_vfs); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 61 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 62 | error = gfs2_log_reserve(sdp, tr->tr_reserved); |
| 63 | if (error) |
Benjamin Marzinski | 2497255 | 2014-05-01 22:26:55 -0500 | [diff] [blame] | 64 | goto fail; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 65 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 66 | current->journal_info = tr; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 67 | |
| 68 | return 0; |
| 69 | |
Benjamin Marzinski | 2497255 | 2014-05-01 22:26:55 -0500 | [diff] [blame] | 70 | fail: |
Jan Kara | 39263d5e | 2012-06-12 16:20:41 +0200 | [diff] [blame] | 71 | sb_end_intwrite(sdp->sd_vfs); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 72 | kfree(tr); |
| 73 | |
| 74 | return error; |
| 75 | } |
| 76 | |
Steven Whitehouse | c50b91c | 2012-04-16 16:40:56 +0100 | [diff] [blame] | 77 | static void gfs2_print_trans(const struct gfs2_trans *tr) |
| 78 | { |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame] | 79 | pr_warn("Transaction created at: %pSR\n", (void *)tr->tr_ip); |
| 80 | pr_warn("blocks=%u revokes=%u reserved=%u touched=%u\n", |
| 81 | tr->tr_blocks, tr->tr_revokes, tr->tr_reserved, tr->tr_touched); |
| 82 | pr_warn("Buf %u/%u Databuf %u/%u Revoke %u/%u\n", |
| 83 | tr->tr_num_buf_new, tr->tr_num_buf_rm, |
| 84 | tr->tr_num_databuf_new, tr->tr_num_databuf_rm, |
| 85 | tr->tr_num_revoke, tr->tr_num_revoke_rm); |
Steven Whitehouse | c50b91c | 2012-04-16 16:40:56 +0100 | [diff] [blame] | 86 | } |
| 87 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 88 | void gfs2_trans_end(struct gfs2_sbd *sdp) |
| 89 | { |
Steven Whitehouse | f4154ea | 2006-04-11 14:49:06 -0400 | [diff] [blame] | 90 | struct gfs2_trans *tr = current->journal_info; |
Steven Whitehouse | c50b91c | 2012-04-16 16:40:56 +0100 | [diff] [blame] | 91 | s64 nbuf; |
Steven Whitehouse | f4154ea | 2006-04-11 14:49:06 -0400 | [diff] [blame] | 92 | BUG_ON(!tr); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 93 | current->journal_info = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 94 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 95 | if (!tr->tr_touched) { |
| 96 | gfs2_log_release(sdp, tr->tr_reserved); |
Benjamin Marzinski | 2497255 | 2014-05-01 22:26:55 -0500 | [diff] [blame] | 97 | if (tr->tr_alloced) |
Steven Whitehouse | d8348de | 2009-02-05 10:12:38 +0000 | [diff] [blame] | 98 | kfree(tr); |
Jan Kara | 39263d5e | 2012-06-12 16:20:41 +0200 | [diff] [blame] | 99 | sb_end_intwrite(sdp->sd_vfs); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 100 | return; |
| 101 | } |
| 102 | |
Steven Whitehouse | c50b91c | 2012-04-16 16:40:56 +0100 | [diff] [blame] | 103 | nbuf = tr->tr_num_buf_new + tr->tr_num_databuf_new; |
| 104 | nbuf -= tr->tr_num_buf_rm; |
| 105 | nbuf -= tr->tr_num_databuf_rm; |
| 106 | |
| 107 | if (gfs2_assert_withdraw(sdp, (nbuf <= tr->tr_blocks) && |
| 108 | (tr->tr_num_revoke <= tr->tr_revokes))) |
| 109 | gfs2_print_trans(tr); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 110 | |
| 111 | gfs2_log_commit(sdp, tr); |
Benjamin Marzinski | 2497255 | 2014-05-01 22:26:55 -0500 | [diff] [blame] | 112 | if (tr->tr_alloced && !tr->tr_attached) |
Benjamin Marzinski | 16ca941 | 2013-04-05 20:31:46 -0500 | [diff] [blame] | 113 | kfree(tr); |
Benjamin Marzinski | 16ca941 | 2013-04-05 20:31:46 -0500 | [diff] [blame] | 114 | up_read(&sdp->sd_log_flush_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 115 | |
| 116 | if (sdp->sd_vfs->s_flags & MS_SYNCHRONOUS) |
Benjamin Marzinski | 2497255 | 2014-05-01 22:26:55 -0500 | [diff] [blame] | 117 | gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); |
Jan Kara | 39263d5e | 2012-06-12 16:20:41 +0200 | [diff] [blame] | 118 | sb_end_intwrite(sdp->sd_vfs); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 119 | } |
| 120 | |
Steven Whitehouse | c76c4d9 | 2012-12-14 17:54:21 +0000 | [diff] [blame] | 121 | static struct gfs2_bufdata *gfs2_alloc_bufdata(struct gfs2_glock *gl, |
| 122 | struct buffer_head *bh, |
| 123 | const struct gfs2_log_operations *lops) |
| 124 | { |
| 125 | struct gfs2_bufdata *bd; |
| 126 | |
| 127 | bd = kmem_cache_zalloc(gfs2_bufdata_cachep, GFP_NOFS | __GFP_NOFAIL); |
| 128 | bd->bd_bh = bh; |
| 129 | bd->bd_gl = gl; |
| 130 | bd->bd_ops = lops; |
| 131 | INIT_LIST_HEAD(&bd->bd_list); |
| 132 | bh->b_private = bd; |
| 133 | return bd; |
| 134 | } |
| 135 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 136 | /** |
Steven Whitehouse | 4513899 | 2013-01-28 09:30:07 +0000 | [diff] [blame] | 137 | * gfs2_trans_add_data - Add a databuf to the transaction. |
| 138 | * @gl: The inode glock associated with the buffer |
| 139 | * @bh: The buffer to add |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 140 | * |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 141 | * This is used in two distinct cases: |
| 142 | * i) In ordered write mode |
| 143 | * We put the data buffer on a list so that we can ensure that its |
| 144 | * synced to disk at the right time |
| 145 | * ii) In journaled data mode |
| 146 | * We need to journal the data block in the same way as metadata in |
| 147 | * the functions above. The difference is that here we have a tag |
| 148 | * which is two __be64's being the block number (as per meta data) |
| 149 | * and a flag which says whether the data block needs escaping or |
| 150 | * not. This means we need a new log entry for each 251 or so data |
| 151 | * blocks, which isn't an enormous overhead but twice as much as |
| 152 | * for normal metadata blocks. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 153 | */ |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 154 | void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh) |
| 155 | { |
Steven Whitehouse | 4513899 | 2013-01-28 09:30:07 +0000 | [diff] [blame] | 156 | struct gfs2_trans *tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 157 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | 4513899 | 2013-01-28 09:30:07 +0000 | [diff] [blame] | 158 | struct address_space *mapping = bh->b_page->mapping; |
| 159 | struct gfs2_inode *ip = GFS2_I(mapping->host); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 160 | struct gfs2_bufdata *bd; |
| 161 | |
Steven Whitehouse | 4513899 | 2013-01-28 09:30:07 +0000 | [diff] [blame] | 162 | if (!gfs2_is_jdata(ip)) { |
| 163 | gfs2_ordered_add_inode(ip); |
| 164 | return; |
| 165 | } |
| 166 | |
Benjamin Marzinski | 96e5d1d | 2012-11-07 00:38:06 -0600 | [diff] [blame] | 167 | lock_buffer(bh); |
| 168 | gfs2_log_lock(sdp); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 169 | bd = bh->b_private; |
Steven Whitehouse | c76c4d9 | 2012-12-14 17:54:21 +0000 | [diff] [blame] | 170 | if (bd == NULL) { |
Benjamin Marzinski | 96e5d1d | 2012-11-07 00:38:06 -0600 | [diff] [blame] | 171 | gfs2_log_unlock(sdp); |
| 172 | unlock_buffer(bh); |
Steven Whitehouse | c76c4d9 | 2012-12-14 17:54:21 +0000 | [diff] [blame] | 173 | if (bh->b_private == NULL) |
| 174 | bd = gfs2_alloc_bufdata(gl, bh, &gfs2_databuf_lops); |
Benjamin Marzinski | 96e5d1d | 2012-11-07 00:38:06 -0600 | [diff] [blame] | 175 | lock_buffer(bh); |
| 176 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 177 | } |
Steven Whitehouse | c76c4d9 | 2012-12-14 17:54:21 +0000 | [diff] [blame] | 178 | gfs2_assert(sdp, bd->bd_gl == gl); |
Steven Whitehouse | 4513899 | 2013-01-28 09:30:07 +0000 | [diff] [blame] | 179 | tr->tr_touched = 1; |
| 180 | if (list_empty(&bd->bd_list)) { |
| 181 | set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); |
| 182 | set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); |
| 183 | gfs2_pin(sdp, bd->bd_bh); |
| 184 | tr->tr_num_databuf_new++; |
Steven Whitehouse | d69a3c6 | 2014-02-21 15:22:35 +0000 | [diff] [blame] | 185 | list_add_tail(&bd->bd_list, &tr->tr_databuf); |
Steven Whitehouse | 4513899 | 2013-01-28 09:30:07 +0000 | [diff] [blame] | 186 | } |
Benjamin Marzinski | 96e5d1d | 2012-11-07 00:38:06 -0600 | [diff] [blame] | 187 | gfs2_log_unlock(sdp); |
| 188 | unlock_buffer(bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 189 | } |
| 190 | |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 191 | static void meta_lo_add(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd) |
Steven Whitehouse | 350a9b0 | 2012-12-14 12:36:02 +0000 | [diff] [blame] | 192 | { |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 193 | struct gfs2_meta_header *mh; |
| 194 | struct gfs2_trans *tr; |
| 195 | |
| 196 | tr = current->journal_info; |
| 197 | tr->tr_touched = 1; |
| 198 | if (!list_empty(&bd->bd_list)) |
| 199 | return; |
| 200 | set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); |
| 201 | set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); |
| 202 | mh = (struct gfs2_meta_header *)bd->bd_bh->b_data; |
| 203 | if (unlikely(mh->mh_magic != cpu_to_be32(GFS2_MAGIC))) { |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame] | 204 | pr_err("Attempting to add uninitialised block to journal (inplace block=%lld)\n", |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 205 | (unsigned long long)bd->bd_bh->b_blocknr); |
| 206 | BUG(); |
| 207 | } |
| 208 | gfs2_pin(sdp, bd->bd_bh); |
| 209 | mh->__pad0 = cpu_to_be64(0); |
| 210 | mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); |
Steven Whitehouse | d69a3c6 | 2014-02-21 15:22:35 +0000 | [diff] [blame] | 211 | list_add(&bd->bd_list, &tr->tr_buf); |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 212 | tr->tr_num_buf_new++; |
Steven Whitehouse | 350a9b0 | 2012-12-14 12:36:02 +0000 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh) |
| 216 | { |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 217 | |
| 218 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 219 | struct gfs2_bufdata *bd; |
| 220 | |
| 221 | lock_buffer(bh); |
| 222 | gfs2_log_lock(sdp); |
| 223 | bd = bh->b_private; |
Steven Whitehouse | c76c4d9 | 2012-12-14 17:54:21 +0000 | [diff] [blame] | 224 | if (bd == NULL) { |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 225 | gfs2_log_unlock(sdp); |
| 226 | unlock_buffer(bh); |
Steven Whitehouse | c76c4d9 | 2012-12-14 17:54:21 +0000 | [diff] [blame] | 227 | lock_page(bh->b_page); |
| 228 | if (bh->b_private == NULL) |
| 229 | bd = gfs2_alloc_bufdata(gl, bh, &gfs2_buf_lops); |
| 230 | unlock_page(bh->b_page); |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 231 | lock_buffer(bh); |
| 232 | gfs2_log_lock(sdp); |
| 233 | } |
Steven Whitehouse | c76c4d9 | 2012-12-14 17:54:21 +0000 | [diff] [blame] | 234 | gfs2_assert(sdp, bd->bd_gl == gl); |
Steven Whitehouse | 767f433 | 2012-12-14 12:52:14 +0000 | [diff] [blame] | 235 | meta_lo_add(sdp, bd); |
| 236 | gfs2_log_unlock(sdp); |
| 237 | unlock_buffer(bh); |
Steven Whitehouse | 350a9b0 | 2012-12-14 12:36:02 +0000 | [diff] [blame] | 238 | } |
| 239 | |
Steven Whitehouse | 1ad38c4 | 2007-09-03 11:01:33 +0100 | [diff] [blame] | 240 | void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 241 | { |
Steven Whitehouse | 75f2b87 | 2012-12-14 12:29:56 +0000 | [diff] [blame] | 242 | struct gfs2_trans *tr = current->journal_info; |
| 243 | |
Bob Peterson | c0752aa | 2012-05-01 12:00:34 -0400 | [diff] [blame] | 244 | BUG_ON(!list_empty(&bd->bd_list)); |
Benjamin Marzinski | 5d05496 | 2013-06-14 11:38:29 -0500 | [diff] [blame] | 245 | gfs2_add_revoke(sdp, bd); |
Steven Whitehouse | 75f2b87 | 2012-12-14 12:29:56 +0000 | [diff] [blame] | 246 | tr->tr_touched = 1; |
| 247 | tr->tr_num_revoke++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 248 | } |
| 249 | |
Steven Whitehouse | 5731be5 | 2008-02-01 13:16:55 +0000 | [diff] [blame] | 250 | void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno, unsigned int len) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 251 | { |
Steven Whitehouse | 5731be5 | 2008-02-01 13:16:55 +0000 | [diff] [blame] | 252 | struct gfs2_bufdata *bd, *tmp; |
| 253 | struct gfs2_trans *tr = current->journal_info; |
| 254 | unsigned int n = len; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 255 | |
| 256 | gfs2_log_lock(sdp); |
Bob Peterson | c0752aa | 2012-05-01 12:00:34 -0400 | [diff] [blame] | 257 | list_for_each_entry_safe(bd, tmp, &sdp->sd_log_le_revoke, bd_list) { |
Steven Whitehouse | 5731be5 | 2008-02-01 13:16:55 +0000 | [diff] [blame] | 258 | if ((bd->bd_blkno >= blkno) && (bd->bd_blkno < (blkno + len))) { |
Bob Peterson | c0752aa | 2012-05-01 12:00:34 -0400 | [diff] [blame] | 259 | list_del_init(&bd->bd_list); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 260 | gfs2_assert_withdraw(sdp, sdp->sd_log_num_revoke); |
| 261 | sdp->sd_log_num_revoke--; |
Steven Whitehouse | 5731be5 | 2008-02-01 13:16:55 +0000 | [diff] [blame] | 262 | kmem_cache_free(gfs2_bufdata_cachep, bd); |
| 263 | tr->tr_num_revoke_rm++; |
| 264 | if (--n == 0) |
| 265 | break; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 266 | } |
| 267 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 268 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 269 | } |
| 270 | |