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| author | David Howells <dhowells@redhat.com> | 2007-07-15 23:40:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-16 09:05:43 -0700 |
| commit | e8d6c554126b830217c5e9f549e0e21f865a0a8a (patch) | |
| tree | c43219c6ef4e6a9b4f0ac46d6bd8b675dc249a8b /fs/afs/afs.h | |
| parent | b0fed3140f57c435d2783b698c5090f325c22bad (diff) | |
| download | lwn-e8d6c554126b830217c5e9f549e0e21f865a0a8a.tar.gz lwn-e8d6c554126b830217c5e9f549e0e21f865a0a8a.zip | |
AFS: implement file locking
Implement file locking for AFS.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/afs/afs.h')
| -rw-r--r-- | fs/afs/afs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/afs/afs.h b/fs/afs/afs.h index 245257948140..c548aa346f0d 100644 --- a/fs/afs/afs.h +++ b/fs/afs/afs.h @@ -37,6 +37,13 @@ typedef enum { AFS_FTYPE_SYMLINK = 3, } afs_file_type_t; +typedef enum { + AFS_LOCK_READ = 0, /* read lock request */ + AFS_LOCK_WRITE = 1, /* write lock request */ +} afs_lock_type_t; + +#define AFS_LOCKWAIT (5 * 60) /* time until a lock times out (seconds) */ + /* * AFS file identifier */ @@ -120,6 +127,7 @@ struct afs_file_status { struct afs_fid parent; /* parent dir ID for non-dirs only */ time_t mtime_client; /* last time client changed data */ time_t mtime_server; /* last time server changed data */ + s32 lock_count; /* file lock count (0=UNLK -1=WRLCK +ve=#RDLCK */ }; /* |