Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1 | #ifndef _FS_CEPH_SUPER_H |
| 2 | #define _FS_CEPH_SUPER_H |
| 3 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 4 | #include <linux/ceph/ceph_debug.h> |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 5 | |
| 6 | #include <asm/unaligned.h> |
| 7 | #include <linux/backing-dev.h> |
| 8 | #include <linux/completion.h> |
| 9 | #include <linux/exportfs.h> |
| 10 | #include <linux/fs.h> |
| 11 | #include <linux/mempool.h> |
| 12 | #include <linux/pagemap.h> |
| 13 | #include <linux/wait.h> |
Stephen Rothwell | f1a3d57 | 2010-01-18 11:53:08 +1100 | [diff] [blame] | 14 | #include <linux/writeback.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 15 | #include <linux/slab.h> |
Guangliang Zhao | c969d9b | 2014-02-16 08:35:52 -0800 | [diff] [blame] | 16 | #include <linux/posix_acl.h> |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 17 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 18 | #include <linux/ceph/libceph.h> |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 19 | |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 20 | #ifdef CONFIG_CEPH_FSCACHE |
| 21 | #include <linux/fscache.h> |
| 22 | #endif |
| 23 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 24 | /* f_type in struct statfs */ |
| 25 | #define CEPH_SUPER_MAGIC 0x00c36400 |
| 26 | |
| 27 | /* large granularity for statfs utilization stats to facilitate |
| 28 | * large volume sizes on 32-bit machines. */ |
Sage Weil | 92a49fb | 2013-02-22 15:31:00 -0800 | [diff] [blame] | 29 | #define CEPH_BLOCK_SHIFT 22 /* 4 MB */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 30 | #define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT) |
| 31 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 32 | #define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */ |
| 33 | #define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */ |
| 34 | #define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */ |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 35 | #define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */ |
Sage Weil | a40dc6c | 2012-01-10 09:12:55 -0800 | [diff] [blame] | 36 | #define CEPH_MOUNT_OPT_DCACHE (1<<9) /* use dcache for readdir etc */ |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 37 | #define CEPH_MOUNT_OPT_FSCACHE (1<<10) /* use fscache */ |
Yan, Zheng | 10183a6 | 2015-04-27 15:33:28 +0800 | [diff] [blame] | 38 | #define CEPH_MOUNT_OPT_NOPOOLPERM (1<<11) /* no pool permission check */ |
Sage Weil | 6a25938 | 2010-07-07 09:06:08 -0700 | [diff] [blame] | 39 | |
Yan, Zheng | 133e915 | 2016-01-25 10:44:33 +0800 | [diff] [blame] | 40 | #define CEPH_MOUNT_OPT_DEFAULT CEPH_MOUNT_OPT_DCACHE |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 41 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 42 | #define ceph_set_mount_opt(fsc, opt) \ |
| 43 | (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt; |
| 44 | #define ceph_test_mount_opt(fsc, opt) \ |
| 45 | (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt)) |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 46 | |
Sage Weil | 83817e3 | 2011-08-04 08:03:44 -0700 | [diff] [blame] | 47 | #define CEPH_RSIZE_DEFAULT 0 /* max read size */ |
| 48 | #define CEPH_RASIZE_DEFAULT (8192*1024) /* readahead */ |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 49 | #define CEPH_MAX_READDIR_DEFAULT 1024 |
| 50 | #define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024) |
| 51 | #define CEPH_SNAPDIRNAME_DEFAULT ".snap" |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 52 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 53 | struct ceph_mount_options { |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 54 | int flags; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 55 | int sb_flags; |
| 56 | |
Sage Weil | 83817e3 | 2011-08-04 08:03:44 -0700 | [diff] [blame] | 57 | int wsize; /* max write size */ |
| 58 | int rsize; /* max read size */ |
| 59 | int rasize; /* max readahead */ |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 60 | int congestion_kb; /* max writeback in flight */ |
| 61 | int caps_wanted_delay_min, caps_wanted_delay_max; |
| 62 | int cap_release_safety; |
Sage Weil | 23804d9 | 2010-05-14 13:06:30 -0700 | [diff] [blame] | 63 | int max_readdir; /* max readdir result (entires) */ |
| 64 | int max_readdir_bytes; /* max readdir result (bytes) */ |
Yan, Zheng | 235a098 | 2016-03-30 17:18:34 +0800 | [diff] [blame] | 65 | int mds_namespace; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 66 | |
| 67 | /* |
| 68 | * everything above this point can be memcmp'd; everything below |
| 69 | * is handled in compare_mount_options() |
| 70 | */ |
| 71 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 72 | char *snapdir_name; /* default ".snap" */ |
Yan, Zheng | 3f38495 | 2016-04-21 11:09:55 +0800 | [diff] [blame] | 73 | char *server_path; /* default "/" */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 74 | }; |
| 75 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 76 | struct ceph_fs_client { |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 77 | struct super_block *sb; |
| 78 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 79 | struct ceph_mount_options *mount_options; |
| 80 | struct ceph_client *client; |
| 81 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 82 | unsigned long mount_state; |
Sage Weil | 85ccce4 | 2010-02-17 10:02:43 -0800 | [diff] [blame] | 83 | int min_caps; /* min caps i added */ |
| 84 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 85 | struct ceph_mds_client *mdsc; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 86 | |
| 87 | /* writeback */ |
| 88 | mempool_t *wb_pagevec_pool; |
| 89 | struct workqueue_struct *wb_wq; |
| 90 | struct workqueue_struct *pg_inv_wq; |
| 91 | struct workqueue_struct *trunc_wq; |
Yehuda Sadeh | 2baba25 | 2009-12-18 13:51:57 -0800 | [diff] [blame] | 92 | atomic_long_t writeback_count; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 93 | |
| 94 | struct backing_dev_info backing_dev_info; |
Sage Weil | 0743304 | 2009-11-18 16:50:41 -0800 | [diff] [blame] | 95 | |
| 96 | #ifdef CONFIG_DEBUG_FS |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 97 | struct dentry *debugfs_dentry_lru, *debugfs_caps; |
Yehuda Sadeh | 2baba25 | 2009-12-18 13:51:57 -0800 | [diff] [blame] | 98 | struct dentry *debugfs_congestion_kb; |
Sage Weil | 06edf04 | 2009-12-15 14:44:32 -0800 | [diff] [blame] | 99 | struct dentry *debugfs_bdi; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 100 | struct dentry *debugfs_mdsc, *debugfs_mdsmap; |
John Spray | 14ed970 | 2014-09-12 16:58:49 +0100 | [diff] [blame] | 101 | struct dentry *debugfs_mds_sessions; |
Sage Weil | 0743304 | 2009-11-18 16:50:41 -0800 | [diff] [blame] | 102 | #endif |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 103 | |
| 104 | #ifdef CONFIG_CEPH_FSCACHE |
| 105 | struct fscache_cookie *fscache; |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 106 | #endif |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 107 | }; |
| 108 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 109 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 110 | /* |
| 111 | * File i/o capability. This tracks shared state with the metadata |
| 112 | * server that allows us to cache or writeback attributes or to read |
| 113 | * and write data. For any given inode, we should have one or more |
| 114 | * capabilities, one issued by each metadata server, and our |
| 115 | * cumulative access is the OR of all issued capabilities. |
| 116 | * |
| 117 | * Each cap is referenced by the inode's i_caps rbtree and by per-mds |
| 118 | * session capability lists. |
| 119 | */ |
| 120 | struct ceph_cap { |
| 121 | struct ceph_inode_info *ci; |
| 122 | struct rb_node ci_node; /* per-ci cap tree */ |
| 123 | struct ceph_mds_session *session; |
| 124 | struct list_head session_caps; /* per-session caplist */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 125 | u64 cap_id; /* unique cap id (mds provided) */ |
Yan, Zheng | 745a8e3 | 2015-05-14 17:22:42 +0800 | [diff] [blame] | 126 | union { |
| 127 | /* in-use caps */ |
| 128 | struct { |
| 129 | int issued; /* latest, from the mds */ |
| 130 | int implemented; /* implemented superset of |
| 131 | issued (for revocation) */ |
| 132 | int mds, mds_wanted; |
| 133 | }; |
| 134 | /* caps to release */ |
| 135 | struct { |
| 136 | u64 cap_ino; |
| 137 | int queue_release; |
| 138 | }; |
| 139 | }; |
Sage Weil | 685f9a5d | 2009-11-09 12:05:48 -0800 | [diff] [blame] | 140 | u32 seq, issue_seq, mseq; |
| 141 | u32 cap_gen; /* active/stale cycle */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 142 | unsigned long last_used; |
| 143 | struct list_head caps_item; |
| 144 | }; |
| 145 | |
| 146 | #define CHECK_CAPS_NODELAY 1 /* do not delay any further */ |
| 147 | #define CHECK_CAPS_AUTHONLY 2 /* only check auth cap */ |
| 148 | #define CHECK_CAPS_FLUSH 4 /* flush any dirty caps */ |
| 149 | |
| 150 | /* |
| 151 | * Snapped cap state that is pending flush to mds. When a snapshot occurs, |
| 152 | * we first complete any in-process sync writes and writeback any dirty |
| 153 | * data before flushing the snapped state (tracked here) back to the MDS. |
| 154 | */ |
| 155 | struct ceph_cap_snap { |
| 156 | atomic_t nref; |
| 157 | struct ceph_inode_info *ci; |
| 158 | struct list_head ci_item, flushing_item; |
| 159 | |
| 160 | u64 follows, flush_tid; |
| 161 | int issued, dirty; |
| 162 | struct ceph_snap_context *context; |
| 163 | |
Al Viro | 5706b27 | 2011-07-26 04:52:22 -0400 | [diff] [blame] | 164 | umode_t mode; |
Eric W. Biederman | 05cb11c | 2013-01-31 02:56:19 -0800 | [diff] [blame] | 165 | kuid_t uid; |
| 166 | kgid_t gid; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 167 | |
Sage Weil | 4a625be | 2010-08-22 15:03:56 -0700 | [diff] [blame] | 168 | struct ceph_buffer *xattr_blob; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 169 | u64 xattr_version; |
| 170 | |
| 171 | u64 size; |
| 172 | struct timespec mtime, atime, ctime; |
| 173 | u64 time_warp_seq; |
| 174 | int writing; /* a sync write is still in progress */ |
| 175 | int dirty_pages; /* dirty pages awaiting writeback */ |
Yan, Zheng | e20d258 | 2014-11-14 22:39:13 +0800 | [diff] [blame] | 176 | bool inline_data; |
Yan, Zheng | 8605609 | 2015-05-01 16:57:16 +0800 | [diff] [blame] | 177 | bool need_flush; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 178 | }; |
| 179 | |
| 180 | static inline void ceph_put_cap_snap(struct ceph_cap_snap *capsnap) |
| 181 | { |
Sage Weil | 4a625be | 2010-08-22 15:03:56 -0700 | [diff] [blame] | 182 | if (atomic_dec_and_test(&capsnap->nref)) { |
| 183 | if (capsnap->xattr_blob) |
| 184 | ceph_buffer_put(capsnap->xattr_blob); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 185 | kfree(capsnap); |
Sage Weil | 4a625be | 2010-08-22 15:03:56 -0700 | [diff] [blame] | 186 | } |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 187 | } |
| 188 | |
Yan, Zheng | 553adfd | 2015-06-09 15:48:57 +0800 | [diff] [blame] | 189 | struct ceph_cap_flush { |
| 190 | u64 tid; |
| 191 | int caps; |
Yan, Zheng | e548e9b | 2015-06-10 15:17:56 +0800 | [diff] [blame] | 192 | struct rb_node g_node; // global |
Yan, Zheng | 553adfd | 2015-06-09 15:48:57 +0800 | [diff] [blame] | 193 | union { |
Yan, Zheng | e548e9b | 2015-06-10 15:17:56 +0800 | [diff] [blame] | 194 | struct rb_node i_node; // inode |
Yan, Zheng | 553adfd | 2015-06-09 15:48:57 +0800 | [diff] [blame] | 195 | struct list_head list; |
| 196 | }; |
| 197 | }; |
| 198 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 199 | /* |
| 200 | * The frag tree describes how a directory is fragmented, potentially across |
| 201 | * multiple metadata servers. It is also used to indicate points where |
| 202 | * metadata authority is delegated, and whether/where metadata is replicated. |
| 203 | * |
| 204 | * A _leaf_ frag will be present in the i_fragtree IFF there is |
| 205 | * delegation info. That is, if mds >= 0 || ndist > 0. |
| 206 | */ |
| 207 | #define CEPH_MAX_DIRFRAG_REP 4 |
| 208 | |
| 209 | struct ceph_inode_frag { |
| 210 | struct rb_node node; |
| 211 | |
| 212 | /* fragtree state */ |
| 213 | u32 frag; |
| 214 | int split_by; /* i.e. 2^(split_by) children */ |
| 215 | |
| 216 | /* delegation and replication info */ |
| 217 | int mds; /* -1 if same authority as parent */ |
| 218 | int ndist; /* >0 if replicated */ |
| 219 | int dist[CEPH_MAX_DIRFRAG_REP]; |
| 220 | }; |
| 221 | |
| 222 | /* |
| 223 | * We cache inode xattrs as an encoded blob until they are first used, |
| 224 | * at which point we parse them into an rbtree. |
| 225 | */ |
| 226 | struct ceph_inode_xattr { |
| 227 | struct rb_node node; |
| 228 | |
| 229 | const char *name; |
| 230 | int name_len; |
| 231 | const char *val; |
| 232 | int val_len; |
| 233 | int dirty; |
| 234 | |
| 235 | int should_free_name; |
| 236 | int should_free_val; |
| 237 | }; |
| 238 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 239 | /* |
| 240 | * Ceph dentry state |
| 241 | */ |
| 242 | struct ceph_dentry_info { |
| 243 | struct ceph_mds_session *lease_session; |
| 244 | u32 lease_gen, lease_shared_gen; |
| 245 | u32 lease_seq; |
| 246 | unsigned long lease_renew_after, lease_renew_from; |
| 247 | struct list_head lru; |
| 248 | struct dentry *dentry; |
| 249 | u64 time; |
| 250 | u64 offset; |
| 251 | }; |
| 252 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 253 | struct ceph_inode_xattrs_info { |
| 254 | /* |
| 255 | * (still encoded) xattr blob. we avoid the overhead of parsing |
| 256 | * this until someone actually calls getxattr, etc. |
| 257 | * |
| 258 | * blob->vec.iov_len == 4 implies there are no xattrs; blob == |
| 259 | * NULL means we don't know. |
| 260 | */ |
| 261 | struct ceph_buffer *blob, *prealloc_blob; |
| 262 | |
| 263 | struct rb_root index; |
| 264 | bool dirty; |
| 265 | int count; |
| 266 | int names_size; |
| 267 | int vals_size; |
| 268 | u64 version, index_version; |
| 269 | }; |
| 270 | |
| 271 | /* |
| 272 | * Ceph inode. |
| 273 | */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 274 | struct ceph_inode_info { |
| 275 | struct ceph_vino i_vino; /* ceph ino + snap */ |
| 276 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 277 | spinlock_t i_ceph_lock; |
| 278 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 279 | u64 i_version; |
Yan, Zheng | 31c542a | 2014-11-14 21:41:55 +0800 | [diff] [blame] | 280 | u64 i_inline_version; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 281 | u32 i_time_warp_seq; |
| 282 | |
| 283 | unsigned i_ceph_flags; |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 284 | atomic64_t i_release_count; |
| 285 | atomic64_t i_ordered_count; |
| 286 | atomic64_t i_complete_seq[2]; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 287 | |
Sage Weil | 6c0f3af | 2010-11-16 11:14:34 -0800 | [diff] [blame] | 288 | struct ceph_dir_layout i_dir_layout; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 289 | struct ceph_file_layout i_layout; |
Yan, Zheng | 5ea5c5e | 2016-02-14 18:06:41 +0800 | [diff] [blame] | 290 | size_t i_pool_ns_len; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 291 | char *i_symlink; |
| 292 | |
| 293 | /* for dirs */ |
| 294 | struct timespec i_rctime; |
| 295 | u64 i_rbytes, i_rfiles, i_rsubdirs; |
| 296 | u64 i_files, i_subdirs; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 297 | |
| 298 | struct rb_root i_fragtree; |
Yan, Zheng | 1b1bc16 | 2016-05-04 11:40:30 +0800 | [diff] [blame] | 299 | int i_fragtree_nsplits; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 300 | struct mutex i_fragtree_mutex; |
| 301 | |
| 302 | struct ceph_inode_xattrs_info i_xattrs; |
| 303 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 304 | /* capabilities. protected _both_ by i_ceph_lock and cap->session's |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 305 | * s_mutex. */ |
| 306 | struct rb_root i_caps; /* cap list */ |
| 307 | struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ |
| 308 | unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ |
| 309 | struct list_head i_dirty_item, i_flushing_item; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 310 | /* we need to track cap writeback on a per-cap-bit basis, to allow |
| 311 | * overlapping, pipelined cap flushes to the mds. we can probably |
| 312 | * reduce the tid to 8 bits if we're concerned about inode size. */ |
Yan, Zheng | f66fd9f | 2015-06-10 17:26:13 +0800 | [diff] [blame] | 313 | struct ceph_cap_flush *i_prealloc_cap_flush; |
Yan, Zheng | 553adfd | 2015-06-09 15:48:57 +0800 | [diff] [blame] | 314 | struct rb_root i_cap_flush_tree; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 315 | wait_queue_head_t i_cap_wq; /* threads waiting on a capability */ |
| 316 | unsigned long i_hold_caps_min; /* jiffies */ |
| 317 | unsigned long i_hold_caps_max; /* jiffies */ |
| 318 | struct list_head i_cap_delay_list; /* for delayed cap release to mds */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 319 | struct ceph_cap_reservation i_cap_migration_resv; |
| 320 | struct list_head i_cap_snaps; /* snapped state pending flush to mds */ |
Sage Weil | 7d8cb26 | 2010-08-24 08:44:16 -0700 | [diff] [blame] | 321 | struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or |
| 322 | dirty|flushing caps */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 323 | unsigned i_snap_caps; /* cap bits for snapped files */ |
| 324 | |
| 325 | int i_nr_by_mode[CEPH_FILE_MODE_NUM]; /* open file counts */ |
| 326 | |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 327 | struct mutex i_truncate_mutex; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 328 | u32 i_truncate_seq; /* last truncate to smaller size */ |
| 329 | u64 i_truncate_size; /* and the size we last truncated down to */ |
| 330 | int i_truncate_pending; /* still need to call vmtruncate */ |
| 331 | |
| 332 | u64 i_max_size; /* max file size authorized by mds */ |
| 333 | u64 i_reported_size; /* (max_)size reported to or requested of mds */ |
| 334 | u64 i_wanted_max_size; /* offset we'd like to write too */ |
| 335 | u64 i_requested_max_size; /* max_size we've requested */ |
| 336 | |
| 337 | /* held references to caps */ |
| 338 | int i_pin_ref; |
Henry C Chang | d3d0720 | 2011-05-11 10:29:54 +0000 | [diff] [blame] | 339 | int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 340 | int i_wrbuffer_ref, i_wrbuffer_ref_head; |
| 341 | u32 i_shared_gen; /* increment each time we get FILE_SHARED */ |
Sage Weil | cd045cb | 2010-11-04 11:05:05 -0700 | [diff] [blame] | 342 | u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 343 | u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */ |
| 344 | |
| 345 | struct list_head i_unsafe_writes; /* uncommitted sync writes */ |
| 346 | struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */ |
Yan, Zheng | 68cd5b4 | 2015-10-27 18:36:06 +0800 | [diff] [blame] | 347 | struct list_head i_unsafe_iops; /* uncommitted mds inode ops */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 348 | spinlock_t i_unsafe_lock; |
| 349 | |
| 350 | struct ceph_snap_realm *i_snap_realm; /* snap realm (if caps) */ |
| 351 | int i_snap_realm_counter; /* snap realm (if caps) */ |
| 352 | struct list_head i_snap_realm_item; |
| 353 | struct list_head i_snap_flush_item; |
| 354 | |
| 355 | struct work_struct i_wb_work; /* writeback work */ |
| 356 | struct work_struct i_pg_inv_work; /* page invalidation work */ |
| 357 | |
| 358 | struct work_struct i_vmtruncate_work; |
| 359 | |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 360 | #ifdef CONFIG_CEPH_FSCACHE |
| 361 | struct fscache_cookie *fscache; |
Yan, Zheng | f7f7e7a | 2016-05-18 20:31:55 +0800 | [diff] [blame] | 362 | u32 i_fscache_gen; |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 363 | #endif |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 364 | struct inode vfs_inode; /* at end */ |
| 365 | }; |
| 366 | |
| 367 | static inline struct ceph_inode_info *ceph_inode(struct inode *inode) |
| 368 | { |
Noah Watkins | fbbccec | 2009-10-28 11:54:49 -0700 | [diff] [blame] | 369 | return container_of(inode, struct ceph_inode_info, vfs_inode); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 370 | } |
| 371 | |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 372 | static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode) |
| 373 | { |
| 374 | return (struct ceph_fs_client *)inode->i_sb->s_fs_info; |
| 375 | } |
| 376 | |
| 377 | static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb) |
| 378 | { |
| 379 | return (struct ceph_fs_client *)sb->s_fs_info; |
| 380 | } |
| 381 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 382 | static inline struct ceph_vino ceph_vino(struct inode *inode) |
| 383 | { |
| 384 | return ceph_inode(inode)->i_vino; |
| 385 | } |
| 386 | |
| 387 | /* |
| 388 | * ino_t is <64 bits on many architectures, blech. |
| 389 | * |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 390 | * i_ino (kernel inode) st_ino (userspace) |
| 391 | * i386 32 32 |
| 392 | * x86_64+ino32 64 32 |
| 393 | * x86_64 64 64 |
| 394 | */ |
Amon Ott | 3310f75 | 2011-10-20 13:04:07 -0700 | [diff] [blame] | 395 | static inline u32 ceph_ino_to_ino32(__u64 vino) |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 396 | { |
Amon Ott | 3310f75 | 2011-10-20 13:04:07 -0700 | [diff] [blame] | 397 | u32 ino = vino & 0xffffffff; |
| 398 | ino ^= vino >> 32; |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 399 | if (!ino) |
Amon Ott | a661fc5 | 2012-01-23 09:25:23 -0800 | [diff] [blame] | 400 | ino = 2; |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 401 | return ino; |
| 402 | } |
| 403 | |
| 404 | /* |
| 405 | * kernel i_ino value |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 406 | */ |
| 407 | static inline ino_t ceph_vino_to_ino(struct ceph_vino vino) |
| 408 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 409 | #if BITS_PER_LONG == 32 |
Amon Ott | 3310f75 | 2011-10-20 13:04:07 -0700 | [diff] [blame] | 410 | return ceph_ino_to_ino32(vino.ino); |
| 411 | #else |
| 412 | return (ino_t)vino.ino; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 413 | #endif |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 414 | } |
| 415 | |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 416 | /* |
| 417 | * user-visible ino (stat, filldir) |
| 418 | */ |
| 419 | #if BITS_PER_LONG == 32 |
| 420 | static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) |
| 421 | { |
| 422 | return ino; |
| 423 | } |
| 424 | #else |
| 425 | static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino) |
| 426 | { |
| 427 | if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)) |
| 428 | ino = ceph_ino_to_ino32(ino); |
| 429 | return ino; |
| 430 | } |
| 431 | #endif |
| 432 | |
| 433 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 434 | /* for printf-style formatting */ |
| 435 | #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap |
| 436 | |
| 437 | static inline u64 ceph_ino(struct inode *inode) |
| 438 | { |
| 439 | return ceph_inode(inode)->i_vino.ino; |
| 440 | } |
| 441 | static inline u64 ceph_snap(struct inode *inode) |
| 442 | { |
| 443 | return ceph_inode(inode)->i_vino.snap; |
| 444 | } |
| 445 | |
| 446 | static inline int ceph_ino_compare(struct inode *inode, void *data) |
| 447 | { |
| 448 | struct ceph_vino *pvino = (struct ceph_vino *)data; |
| 449 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 450 | return ci->i_vino.ino == pvino->ino && |
| 451 | ci->i_vino.snap == pvino->snap; |
| 452 | } |
| 453 | |
| 454 | static inline struct inode *ceph_find_inode(struct super_block *sb, |
| 455 | struct ceph_vino vino) |
| 456 | { |
| 457 | ino_t t = ceph_vino_to_ino(vino); |
| 458 | return ilookup5(sb, t, ceph_ino_compare, &vino); |
| 459 | } |
| 460 | |
| 461 | |
| 462 | /* |
| 463 | * Ceph inode. |
| 464 | */ |
Yan, Zheng | 10183a6 | 2015-04-27 15:33:28 +0800 | [diff] [blame] | 465 | #define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */ |
| 466 | #define CEPH_I_NODELAY (1 << 1) /* do not delay cap release */ |
| 467 | #define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */ |
| 468 | #define CEPH_I_NOFLUSH (1 << 3) /* do not flush dirty caps */ |
| 469 | #define CEPH_I_POOL_PERM (1 << 4) /* pool rd/wr bits are valid */ |
| 470 | #define CEPH_I_POOL_RD (1 << 5) /* can read from pool */ |
| 471 | #define CEPH_I_POOL_WR (1 << 6) /* can write to pool */ |
Yan, Zheng | 315f240 | 2016-03-07 10:34:50 +0800 | [diff] [blame] | 472 | #define CEPH_I_SEC_INITED (1 << 7) /* security initialized */ |
Yan, Zheng | 7731032 | 2016-04-08 15:27:16 +0800 | [diff] [blame] | 473 | #define CEPH_I_CAP_DROPPED (1 << 8) /* caps were forcibly dropped */ |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 474 | |
Yan, Zheng | 2f276c5 | 2013-03-13 19:44:32 +0800 | [diff] [blame] | 475 | static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci, |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 476 | long long release_count, |
| 477 | long long ordered_count) |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 478 | { |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 479 | smp_mb__before_atomic(); |
| 480 | atomic64_set(&ci->i_complete_seq[0], release_count); |
| 481 | atomic64_set(&ci->i_complete_seq[1], ordered_count); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 482 | } |
| 483 | |
Yan, Zheng | 2f276c5 | 2013-03-13 19:44:32 +0800 | [diff] [blame] | 484 | static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci) |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 485 | { |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 486 | atomic64_inc(&ci->i_release_count); |
| 487 | } |
| 488 | |
| 489 | static inline void __ceph_dir_clear_ordered(struct ceph_inode_info *ci) |
| 490 | { |
| 491 | atomic64_inc(&ci->i_ordered_count); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 492 | } |
| 493 | |
Yan, Zheng | 2f276c5 | 2013-03-13 19:44:32 +0800 | [diff] [blame] | 494 | static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci) |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 495 | { |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 496 | return atomic64_read(&ci->i_complete_seq[0]) == |
| 497 | atomic64_read(&ci->i_release_count); |
Yan, Zheng | 2f276c5 | 2013-03-13 19:44:32 +0800 | [diff] [blame] | 498 | } |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 499 | |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 500 | static inline bool __ceph_dir_is_complete_ordered(struct ceph_inode_info *ci) |
| 501 | { |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 502 | return atomic64_read(&ci->i_complete_seq[0]) == |
| 503 | atomic64_read(&ci->i_release_count) && |
| 504 | atomic64_read(&ci->i_complete_seq[1]) == |
| 505 | atomic64_read(&ci->i_ordered_count); |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 506 | } |
| 507 | |
Yan, Zheng | 2f276c5 | 2013-03-13 19:44:32 +0800 | [diff] [blame] | 508 | static inline void ceph_dir_clear_complete(struct inode *inode) |
| 509 | { |
| 510 | __ceph_dir_clear_complete(ceph_inode(inode)); |
| 511 | } |
| 512 | |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 513 | static inline void ceph_dir_clear_ordered(struct inode *inode) |
Yan, Zheng | 2f276c5 | 2013-03-13 19:44:32 +0800 | [diff] [blame] | 514 | { |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 515 | __ceph_dir_clear_ordered(ceph_inode(inode)); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 516 | } |
| 517 | |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 518 | static inline bool ceph_dir_is_complete_ordered(struct inode *inode) |
| 519 | { |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 520 | bool ret = __ceph_dir_is_complete_ordered(ceph_inode(inode)); |
| 521 | smp_rmb(); |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 522 | return ret; |
| 523 | } |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 524 | |
| 525 | /* find a specific frag @f */ |
| 526 | extern struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, |
| 527 | u32 f); |
| 528 | |
| 529 | /* |
| 530 | * choose fragment for value @v. copy frag content to pfrag, if leaf |
| 531 | * exists |
| 532 | */ |
| 533 | extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, |
| 534 | struct ceph_inode_frag *pfrag, |
| 535 | int *found); |
| 536 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 537 | static inline struct ceph_dentry_info *ceph_dentry(struct dentry *dentry) |
| 538 | { |
| 539 | return (struct ceph_dentry_info *)dentry->d_fsdata; |
| 540 | } |
| 541 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 542 | /* |
| 543 | * caps helpers |
| 544 | */ |
| 545 | static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) |
| 546 | { |
| 547 | return !RB_EMPTY_ROOT(&ci->i_caps); |
| 548 | } |
| 549 | |
| 550 | extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented); |
| 551 | extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int t); |
| 552 | extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, |
| 553 | struct ceph_cap *cap); |
| 554 | |
| 555 | static inline int ceph_caps_issued(struct ceph_inode_info *ci) |
| 556 | { |
| 557 | int issued; |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 558 | spin_lock(&ci->i_ceph_lock); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 559 | issued = __ceph_caps_issued(ci, NULL); |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 560 | spin_unlock(&ci->i_ceph_lock); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 561 | return issued; |
| 562 | } |
| 563 | |
| 564 | static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, |
| 565 | int touch) |
| 566 | { |
| 567 | int r; |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 568 | spin_lock(&ci->i_ceph_lock); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 569 | r = __ceph_caps_issued_mask(ci, mask, touch); |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 570 | spin_unlock(&ci->i_ceph_lock); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 571 | return r; |
| 572 | } |
| 573 | |
| 574 | static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) |
| 575 | { |
| 576 | return ci->i_dirty_caps | ci->i_flushing_caps; |
| 577 | } |
Yan, Zheng | f66fd9f | 2015-06-10 17:26:13 +0800 | [diff] [blame] | 578 | extern struct ceph_cap_flush *ceph_alloc_cap_flush(void); |
| 579 | extern void ceph_free_cap_flush(struct ceph_cap_flush *cf); |
| 580 | extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, |
| 581 | struct ceph_cap_flush **pcf); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 582 | |
Yan, Zheng | 9563f88 | 2013-11-22 13:50:45 +0800 | [diff] [blame] | 583 | extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, |
| 584 | struct ceph_cap *ocap, int mask); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 585 | extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); |
| 586 | extern int __ceph_caps_used(struct ceph_inode_info *ci); |
| 587 | |
| 588 | extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci); |
| 589 | |
| 590 | /* |
| 591 | * wanted, by virtue of open file modes AND cap refs (buffered/cached data) |
| 592 | */ |
| 593 | static inline int __ceph_caps_wanted(struct ceph_inode_info *ci) |
| 594 | { |
| 595 | int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); |
| 596 | if (w & CEPH_CAP_FILE_BUFFER) |
| 597 | w |= CEPH_CAP_FILE_EXCL; /* we want EXCL if dirty data */ |
| 598 | return w; |
| 599 | } |
| 600 | |
| 601 | /* what the mds thinks we want */ |
| 602 | extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci); |
| 603 | |
Yehuda Sadeh | 3715166 | 2010-06-17 16:16:12 -0700 | [diff] [blame] | 604 | extern void ceph_caps_init(struct ceph_mds_client *mdsc); |
| 605 | extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); |
| 606 | extern void ceph_adjust_min_caps(struct ceph_mds_client *mdsc, int delta); |
majianpeng | 93faca6 | 2013-06-26 11:15:27 +0800 | [diff] [blame] | 607 | extern void ceph_reserve_caps(struct ceph_mds_client *mdsc, |
Yehuda Sadeh | 3715166 | 2010-06-17 16:16:12 -0700 | [diff] [blame] | 608 | struct ceph_cap_reservation *ctx, int need); |
| 609 | extern int ceph_unreserve_caps(struct ceph_mds_client *mdsc, |
| 610 | struct ceph_cap_reservation *ctx); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 611 | extern void ceph_reservation_status(struct ceph_fs_client *client, |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 612 | int *total, int *avail, int *used, |
Sage Weil | 85ccce4 | 2010-02-17 10:02:43 -0800 | [diff] [blame] | 613 | int *reserved, int *min); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 614 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 615 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 616 | |
| 617 | /* |
| 618 | * we keep buffered readdir results attached to file->private_data |
| 619 | */ |
Sage Weil | 4918b6d | 2011-07-26 11:26:07 -0700 | [diff] [blame] | 620 | #define CEPH_F_SYNC 1 |
Sage Weil | 9cfa109 | 2011-07-26 11:26:18 -0700 | [diff] [blame] | 621 | #define CEPH_F_ATEND 2 |
Sage Weil | 4918b6d | 2011-07-26 11:26:07 -0700 | [diff] [blame] | 622 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 623 | struct ceph_file_info { |
Sage Weil | 252c672 | 2011-07-26 11:25:27 -0700 | [diff] [blame] | 624 | short fmode; /* initialized on open */ |
| 625 | short flags; /* CEPH_F_* */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 626 | |
| 627 | /* readdir: position within the dir */ |
| 628 | u32 frag; |
| 629 | struct ceph_mds_request *last_readdir; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 630 | |
| 631 | /* readdir: position within a frag */ |
Yan, Zheng | f049420 | 2014-02-27 16:26:24 +0800 | [diff] [blame] | 632 | unsigned next_offset; /* offset of next chunk (last_name's + 1) */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 633 | char *last_name; /* last entry in previous chunk */ |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 634 | long long dir_release_count; |
| 635 | long long dir_ordered_count; |
| 636 | int readdir_cache_idx; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 637 | |
| 638 | /* used for -o dirstat read() on directory thing */ |
| 639 | char *dir_info; |
| 640 | int dir_info_len; |
| 641 | }; |
| 642 | |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 643 | struct ceph_readdir_cache_control { |
| 644 | struct page *page; |
| 645 | struct dentry **dentries; |
| 646 | int index; |
| 647 | }; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 648 | |
| 649 | /* |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 650 | * A "snap realm" describes a subset of the file hierarchy sharing |
| 651 | * the same set of snapshots that apply to it. The realms themselves |
| 652 | * are organized into a hierarchy, such that children inherit (some of) |
| 653 | * the snapshots of their parents. |
| 654 | * |
| 655 | * All inodes within the realm that have capabilities are linked into a |
| 656 | * per-realm list. |
| 657 | */ |
| 658 | struct ceph_snap_realm { |
| 659 | u64 ino; |
| 660 | atomic_t nref; |
Sage Weil | a105f00 | 2010-02-15 14:37:55 -0800 | [diff] [blame] | 661 | struct rb_node node; |
| 662 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 663 | u64 created, seq; |
| 664 | u64 parent_ino; |
| 665 | u64 parent_since; /* snapid when our current parent became so */ |
| 666 | |
| 667 | u64 *prior_parent_snaps; /* snaps inherited from any parents we */ |
Alex Elder | aa711ee | 2012-07-13 20:35:11 -0500 | [diff] [blame] | 668 | u32 num_prior_parent_snaps; /* had prior to parent_since */ |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 669 | u64 *snaps; /* snaps specific to this realm */ |
Alex Elder | aa711ee | 2012-07-13 20:35:11 -0500 | [diff] [blame] | 670 | u32 num_snaps; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 671 | |
| 672 | struct ceph_snap_realm *parent; |
| 673 | struct list_head children; /* list of child realms */ |
| 674 | struct list_head child_item; |
| 675 | |
| 676 | struct list_head empty_item; /* if i have ref==0 */ |
| 677 | |
Sage Weil | ae00d4f | 2010-09-16 16:26:51 -0700 | [diff] [blame] | 678 | struct list_head dirty_item; /* if realm needs new context */ |
| 679 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 680 | /* the current set of snaps for this realm */ |
| 681 | struct ceph_snap_context *cached_context; |
| 682 | |
| 683 | struct list_head inodes_with_caps; |
| 684 | spinlock_t inodes_with_caps_lock; |
| 685 | }; |
| 686 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 687 | static inline int default_congestion_kb(void) |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 688 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 689 | int congestion_kb; |
| 690 | |
| 691 | /* |
| 692 | * Copied from NFS |
| 693 | * |
| 694 | * congestion size, scale with available memory. |
| 695 | * |
| 696 | * 64MB: 8192k |
| 697 | * 128MB: 11585k |
| 698 | * 256MB: 16384k |
| 699 | * 512MB: 23170k |
| 700 | * 1GB: 32768k |
| 701 | * 2GB: 46340k |
| 702 | * 4GB: 65536k |
| 703 | * 8GB: 92681k |
| 704 | * 16GB: 131072k |
| 705 | * |
| 706 | * This allows larger machines to have larger/more transfers. |
| 707 | * Limit the default to 256M |
| 708 | */ |
| 709 | congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10); |
| 710 | if (congestion_kb > 256*1024) |
| 711 | congestion_kb = 256*1024; |
| 712 | |
| 713 | return congestion_kb; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | |
| 717 | |
| 718 | /* snap.c */ |
| 719 | struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc, |
| 720 | u64 ino); |
| 721 | extern void ceph_get_snap_realm(struct ceph_mds_client *mdsc, |
| 722 | struct ceph_snap_realm *realm); |
| 723 | extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc, |
| 724 | struct ceph_snap_realm *realm); |
| 725 | extern int ceph_update_snap_trace(struct ceph_mds_client *m, |
Yan, Zheng | 982d601 | 2014-12-23 15:30:54 +0800 | [diff] [blame] | 726 | void *p, void *e, bool deletion, |
| 727 | struct ceph_snap_realm **realm_ret); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 728 | extern void ceph_handle_snap(struct ceph_mds_client *mdsc, |
Sage Weil | 2600d2d | 2010-02-22 15:12:16 -0800 | [diff] [blame] | 729 | struct ceph_mds_session *session, |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 730 | struct ceph_msg *msg); |
Sage Weil | fc837c8f | 2010-04-13 11:41:22 -0700 | [diff] [blame] | 731 | extern void ceph_queue_cap_snap(struct ceph_inode_info *ci); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 732 | extern int __ceph_finish_cap_snap(struct ceph_inode_info *ci, |
| 733 | struct ceph_cap_snap *capsnap); |
| 734 | extern void ceph_cleanup_empty_realms(struct ceph_mds_client *mdsc); |
| 735 | |
| 736 | /* |
| 737 | * a cap_snap is "pending" if it is still awaiting an in-progress |
| 738 | * sync write (that may/may not still update size, mtime, etc.). |
| 739 | */ |
| 740 | static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci) |
| 741 | { |
| 742 | return !list_empty(&ci->i_cap_snaps) && |
Yan, Zheng | 8605609 | 2015-05-01 16:57:16 +0800 | [diff] [blame] | 743 | list_last_entry(&ci->i_cap_snaps, struct ceph_cap_snap, |
| 744 | ci_item)->writing; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 745 | } |
| 746 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 747 | /* inode.c */ |
| 748 | extern const struct inode_operations ceph_file_iops; |
| 749 | |
| 750 | extern struct inode *ceph_alloc_inode(struct super_block *sb); |
| 751 | extern void ceph_destroy_inode(struct inode *inode); |
Yan, Zheng | 9f12bd1 | 2013-09-20 19:55:31 +0800 | [diff] [blame] | 752 | extern int ceph_drop_inode(struct inode *inode); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 753 | |
| 754 | extern struct inode *ceph_get_inode(struct super_block *sb, |
| 755 | struct ceph_vino vino); |
| 756 | extern struct inode *ceph_get_snapdir(struct inode *parent); |
| 757 | extern int ceph_fill_file_size(struct inode *inode, int issued, |
| 758 | u32 truncate_seq, u64 truncate_size, u64 size); |
| 759 | extern void ceph_fill_file_time(struct inode *inode, int issued, |
| 760 | u64 time_warp_seq, struct timespec *ctime, |
| 761 | struct timespec *mtime, struct timespec *atime); |
| 762 | extern int ceph_fill_trace(struct super_block *sb, |
| 763 | struct ceph_mds_request *req, |
| 764 | struct ceph_mds_session *session); |
| 765 | extern int ceph_readdir_prepopulate(struct ceph_mds_request *req, |
| 766 | struct ceph_mds_session *session); |
| 767 | |
| 768 | extern int ceph_inode_holds_cap(struct inode *inode, int mask); |
| 769 | |
| 770 | extern int ceph_inode_set_size(struct inode *inode, loff_t size); |
Yan, Zheng | b415bf4 | 2013-07-02 12:40:19 +0800 | [diff] [blame] | 771 | extern void __ceph_do_pending_vmtruncate(struct inode *inode); |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 772 | extern void ceph_queue_vmtruncate(struct inode *inode); |
| 773 | |
| 774 | extern void ceph_queue_invalidate(struct inode *inode); |
| 775 | extern void ceph_queue_writeback(struct inode *inode); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 776 | |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame] | 777 | extern int __ceph_do_getattr(struct inode *inode, struct page *locked_page, |
| 778 | int mask, bool force); |
| 779 | static inline int ceph_do_getattr(struct inode *inode, int mask, bool force) |
| 780 | { |
| 781 | return __ceph_do_getattr(inode, NULL, mask, force); |
| 782 | } |
Al Viro | 10556cb | 2011-06-20 19:28:19 -0400 | [diff] [blame] | 783 | extern int ceph_permission(struct inode *inode, int mask); |
Andreas Gruenbacher | a26fecc | 2016-04-14 00:30:16 +0200 | [diff] [blame] | 784 | extern int __ceph_setattr(struct inode *inode, struct iattr *attr); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 785 | extern int ceph_setattr(struct dentry *dentry, struct iattr *attr); |
| 786 | extern int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, |
| 787 | struct kstat *stat); |
| 788 | |
| 789 | /* xattr.c */ |
Andreas Gruenbacher | a26fecc | 2016-04-14 00:30:16 +0200 | [diff] [blame] | 790 | int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 791 | ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 792 | extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 793 | extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci); |
| 794 | extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); |
Alex Elder | 3ce6cd1 | 2012-01-23 15:49:28 -0600 | [diff] [blame] | 795 | extern void __init ceph_xattr_init(void); |
| 796 | extern void ceph_xattr_exit(void); |
Yan, Zheng | b1ee94a | 2014-09-16 20:35:17 +0800 | [diff] [blame] | 797 | extern const struct xattr_handler *ceph_xattr_handlers[]; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 798 | |
Yan, Zheng | 315f240 | 2016-03-07 10:34:50 +0800 | [diff] [blame] | 799 | #ifdef CONFIG_SECURITY |
| 800 | extern bool ceph_security_xattr_deadlock(struct inode *in); |
| 801 | extern bool ceph_security_xattr_wanted(struct inode *in); |
| 802 | #else |
| 803 | static inline bool ceph_security_xattr_deadlock(struct inode *in) |
| 804 | { |
| 805 | return false; |
| 806 | } |
| 807 | static inline bool ceph_security_xattr_wanted(struct inode *in) |
| 808 | { |
| 809 | return false; |
| 810 | } |
| 811 | #endif |
| 812 | |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 813 | /* acl.c */ |
Yan, Zheng | b1ee94a | 2014-09-16 20:35:17 +0800 | [diff] [blame] | 814 | struct ceph_acls_info { |
| 815 | void *default_acl; |
| 816 | void *acl; |
| 817 | struct ceph_pagelist *pagelist; |
| 818 | }; |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 819 | |
| 820 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
| 821 | |
| 822 | struct posix_acl *ceph_get_acl(struct inode *, int); |
Sage Weil | 72466d0 | 2014-01-29 06:22:25 -0800 | [diff] [blame] | 823 | int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
Yan, Zheng | b1ee94a | 2014-09-16 20:35:17 +0800 | [diff] [blame] | 824 | int ceph_pre_init_acls(struct inode *dir, umode_t *mode, |
| 825 | struct ceph_acls_info *info); |
| 826 | void ceph_init_inode_acls(struct inode *inode, struct ceph_acls_info *info); |
| 827 | void ceph_release_acls_info(struct ceph_acls_info *info); |
Guangliang Zhao | c969d9b | 2014-02-16 08:35:52 -0800 | [diff] [blame] | 828 | |
| 829 | static inline void ceph_forget_all_cached_acls(struct inode *inode) |
| 830 | { |
| 831 | forget_all_cached_acls(inode); |
| 832 | } |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 833 | |
| 834 | #else |
| 835 | |
| 836 | #define ceph_get_acl NULL |
Sage Weil | 72466d0 | 2014-01-29 06:22:25 -0800 | [diff] [blame] | 837 | #define ceph_set_acl NULL |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 838 | |
Yan, Zheng | b1ee94a | 2014-09-16 20:35:17 +0800 | [diff] [blame] | 839 | static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode, |
| 840 | struct ceph_acls_info *info) |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 841 | { |
| 842 | return 0; |
| 843 | } |
Yan, Zheng | b1ee94a | 2014-09-16 20:35:17 +0800 | [diff] [blame] | 844 | static inline void ceph_init_inode_acls(struct inode *inode, |
| 845 | struct ceph_acls_info *info) |
| 846 | { |
| 847 | } |
| 848 | static inline void ceph_release_acls_info(struct ceph_acls_info *info) |
| 849 | { |
| 850 | } |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 851 | static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) |
| 852 | { |
| 853 | return 0; |
| 854 | } |
| 855 | |
| 856 | static inline void ceph_forget_all_cached_acls(struct inode *inode) |
| 857 | { |
| 858 | } |
| 859 | |
| 860 | #endif |
| 861 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 862 | /* caps.c */ |
| 863 | extern const char *ceph_cap_string(int c); |
| 864 | extern void ceph_handle_caps(struct ceph_mds_session *session, |
| 865 | struct ceph_msg *msg); |
Yan, Zheng | d9df278 | 2014-04-18 09:57:11 +0800 | [diff] [blame] | 866 | extern struct ceph_cap *ceph_get_cap(struct ceph_mds_client *mdsc, |
| 867 | struct ceph_cap_reservation *ctx); |
| 868 | extern void ceph_add_cap(struct inode *inode, |
| 869 | struct ceph_mds_session *session, u64 cap_id, |
| 870 | int fmode, unsigned issued, unsigned wanted, |
| 871 | unsigned cap, unsigned seq, u64 realmino, int flags, |
| 872 | struct ceph_cap **new_cap); |
Yan, Zheng | a096b09 | 2013-09-22 10:15:58 +0800 | [diff] [blame] | 873 | extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); |
Yehuda Sadeh | 3715166 | 2010-06-17 16:16:12 -0700 | [diff] [blame] | 874 | extern void ceph_put_cap(struct ceph_mds_client *mdsc, |
| 875 | struct ceph_cap *cap); |
Yan, Zheng | 9215aee | 2013-11-30 12:47:41 +0800 | [diff] [blame] | 876 | extern int ceph_is_any_caps(struct inode *inode); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 877 | |
| 878 | extern void ceph_queue_caps_release(struct inode *inode); |
Stephen Rothwell | f1a3d57 | 2010-01-18 11:53:08 +1100 | [diff] [blame] | 879 | extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc); |
Josef Bacik | 02c24a8 | 2011-07-16 20:44:56 -0400 | [diff] [blame] | 880 | extern int ceph_fsync(struct file *file, loff_t start, loff_t end, |
| 881 | int datasync); |
Yan, Zheng | e548e9b | 2015-06-10 15:17:56 +0800 | [diff] [blame] | 882 | extern void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, |
| 883 | struct ceph_mds_session *session); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 884 | extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, |
| 885 | struct ceph_mds_session *session); |
Greg Farnum | 2bc5025 | 2010-06-30 12:44:34 -0700 | [diff] [blame] | 886 | extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, |
| 887 | int mds); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 888 | extern int ceph_get_cap_mds(struct inode *inode); |
| 889 | extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps); |
| 890 | extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had); |
| 891 | extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, |
| 892 | struct ceph_snap_context *snapc); |
| 893 | extern void __ceph_flush_snaps(struct ceph_inode_info *ci, |
Sage Weil | e835124 | 2010-09-17 08:03:08 -0700 | [diff] [blame] | 894 | struct ceph_mds_session **psession, |
| 895 | int again); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 896 | extern void ceph_check_caps(struct ceph_inode_info *ci, int flags, |
| 897 | struct ceph_mds_session *session); |
Sage Weil | afcdaea | 2009-10-14 14:27:38 -0700 | [diff] [blame] | 898 | extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc); |
| 899 | extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 900 | |
| 901 | extern int ceph_encode_inode_release(void **p, struct inode *inode, |
| 902 | int mds, int drop, int unless, int force); |
| 903 | extern int ceph_encode_dentry_release(void **p, struct dentry *dn, |
| 904 | int mds, int drop, int unless); |
| 905 | |
| 906 | extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, |
Yan, Zheng | 31c542a | 2014-11-14 21:41:55 +0800 | [diff] [blame] | 907 | loff_t endoff, int *got, struct page **pinned_page); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 908 | |
| 909 | /* for counting open files by mode */ |
| 910 | static inline void __ceph_get_fmode(struct ceph_inode_info *ci, int mode) |
| 911 | { |
| 912 | ci->i_nr_by_mode[mode]++; |
| 913 | } |
| 914 | extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode); |
| 915 | |
| 916 | /* addr.c */ |
| 917 | extern const struct address_space_operations ceph_aops; |
| 918 | extern int ceph_mmap(struct file *file, struct vm_area_struct *vma); |
Yan, Zheng | 10183a6 | 2015-04-27 15:33:28 +0800 | [diff] [blame] | 919 | extern int ceph_uninline_data(struct file *filp, struct page *locked_page); |
| 920 | extern int ceph_pool_perm_check(struct ceph_inode_info *ci, int need); |
| 921 | extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 922 | |
| 923 | /* file.c */ |
| 924 | extern const struct file_operations ceph_file_fops; |
Alex Elder | 9e0eb85 | 2013-02-06 13:11:38 -0600 | [diff] [blame] | 925 | |
Yan, Zheng | 7731032 | 2016-04-08 15:27:16 +0800 | [diff] [blame] | 926 | extern int ceph_renew_caps(struct inode *inode); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 927 | extern int ceph_open(struct inode *inode, struct file *file); |
Sage Weil | 5ef50c3 | 2012-07-31 11:27:36 -0700 | [diff] [blame] | 928 | extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry, |
| 929 | struct file *file, unsigned flags, umode_t mode, |
| 930 | int *opened); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 931 | extern int ceph_release(struct inode *inode, struct file *filp); |
Yan, Zheng | 31c542a | 2014-11-14 21:41:55 +0800 | [diff] [blame] | 932 | extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page, |
| 933 | char *data, size_t len); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 934 | /* dir.c */ |
| 935 | extern const struct file_operations ceph_dir_fops; |
Yan, Zheng | 38c48b5 | 2015-01-14 13:46:04 +0800 | [diff] [blame] | 936 | extern const struct file_operations ceph_snapdir_fops; |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 937 | extern const struct inode_operations ceph_dir_iops; |
Yan, Zheng | 38c48b5 | 2015-01-14 13:46:04 +0800 | [diff] [blame] | 938 | extern const struct inode_operations ceph_snapdir_iops; |
Sage Weil | 52dfb8a | 2010-08-03 10:25:30 -0700 | [diff] [blame] | 939 | extern const struct dentry_operations ceph_dentry_ops, ceph_snap_dentry_ops, |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 940 | ceph_snapdir_dentry_ops; |
| 941 | |
Yan, Zheng | f3c4ebe | 2016-04-29 11:27:30 +0800 | [diff] [blame] | 942 | extern loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 943 | extern int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry); |
Sage Weil | 468640e | 2011-07-26 11:28:11 -0700 | [diff] [blame] | 944 | extern int ceph_handle_snapdir(struct ceph_mds_request *req, |
| 945 | struct dentry *dentry, int err); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 946 | extern struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, |
| 947 | struct dentry *dentry, int err); |
| 948 | |
| 949 | extern void ceph_dentry_lru_add(struct dentry *dn); |
| 950 | extern void ceph_dentry_lru_touch(struct dentry *dn); |
| 951 | extern void ceph_dentry_lru_del(struct dentry *dn); |
Sage Weil | 81a6cf2 | 2010-05-14 09:35:38 -0700 | [diff] [blame] | 952 | extern void ceph_invalidate_dentry_lease(struct dentry *dentry); |
Sage Weil | e5f86dc | 2011-07-26 11:30:55 -0700 | [diff] [blame] | 953 | extern unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn); |
Yan, Zheng | fdd4e15 | 2015-06-16 20:48:56 +0800 | [diff] [blame] | 954 | extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl); |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 955 | |
| 956 | /* |
| 957 | * our d_ops vary depending on whether the inode is live, |
| 958 | * snapshotted (read-only), or a virtual ".snap" directory. |
| 959 | */ |
| 960 | int ceph_init_dentry(struct dentry *dentry); |
| 961 | |
| 962 | |
| 963 | /* ioctl.c */ |
| 964 | extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
| 965 | |
| 966 | /* export.c */ |
| 967 | extern const struct export_operations ceph_export_ops; |
| 968 | |
Greg Farnum | 40819f6 | 2010-08-02 15:34:23 -0700 | [diff] [blame] | 969 | /* locks.c */ |
Yan, Zheng | eb13e83 | 2014-03-09 23:16:40 +0800 | [diff] [blame] | 970 | extern __init void ceph_flock_init(void); |
Greg Farnum | 40819f6 | 2010-08-02 15:34:23 -0700 | [diff] [blame] | 971 | extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); |
| 972 | extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); |
| 973 | extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); |
Jim Schutt | 39be95e | 2013-05-15 13:03:35 -0500 | [diff] [blame] | 974 | extern int ceph_encode_locks_to_buffer(struct inode *inode, |
| 975 | struct ceph_filelock *flocks, |
| 976 | int num_fcntl_locks, |
| 977 | int num_flock_locks); |
| 978 | extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks, |
| 979 | struct ceph_pagelist *pagelist, |
| 980 | int num_fcntl_locks, int num_flock_locks); |
Greg Farnum | 40819f6 | 2010-08-02 15:34:23 -0700 | [diff] [blame] | 981 | extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c); |
| 982 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 983 | /* debugfs.c */ |
| 984 | extern int ceph_fs_debugfs_init(struct ceph_fs_client *client); |
| 985 | extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client); |
| 986 | |
Sage Weil | de57606 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 987 | #endif /* _FS_CEPH_SUPER_H */ |