From e8d6c554126b830217c5e9f549e0e21f865a0a8a Mon Sep 17 00:00:00 2001 From: David Howells Date: Sun, 15 Jul 2007 23:40:12 -0700 Subject: AFS: implement file locking Implement file locking for AFS. Signed-off-by: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/afs/afs.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'fs/afs/afs.h') diff --git a/fs/afs/afs.h b/fs/afs/afs.h index 24525794814..c548aa346f0 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 */ }; /* -- cgit v1.2.3