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authorTrond Myklebust <Trond.Myklebust@netapp.com>2006-06-29 16:38:32 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-07-05 13:13:17 -0400
commitf475ae957db66650db66916c62604ac27409d884 (patch)
tree3b9c40dd20f1b7f3fcc59035941c4a084ce71a19 /include/linux/fs.h
parent5e66dd6d66ffe758b39b6dcadf2330753ee1159b (diff)
VFS: Allow caller to determine if BSD or posix locks were actually freed
Change posix_lock_file_conf(), and flock_lock_file() so that if called with an F_UNLCK argument, and the FL_EXISTS flag they will indicate whether or not any locks were actually freed by returning 0 or -ENOENT. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/fs.h')
-rw-r--r--include/linux/fs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 134b3206824..43aef9b230f 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -716,6 +716,7 @@ extern spinlock_t files_lock;
#define FL_POSIX 1
#define FL_FLOCK 2
#define FL_ACCESS 8 /* not trying to lock, just looking */
+#define FL_EXISTS 16 /* when unlocking, test for existence */
#define FL_LEASE 32 /* lease held on this file */
#define FL_CLOSE 64 /* unlock on close */
#define FL_SLEEP 128 /* A blocking lock */