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| author | J. Bruce Fields <bfields@citi.umich.edu> | 2008-04-24 10:08:22 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2008-04-25 13:00:11 -0400 |
| commit | 1a747ee0cc11a198f9e2435add821bd0dfedb7c1 (patch) | |
| tree | 10b5a55bde30bef3f466e5126bd44fc0e111fc5a /fs/locks.c | |
| parent | 17efa372cfe4d189705edf6cd4fbe283827a5dc7 (diff) | |
| download | lwn-1a747ee0cc11a198f9e2435add821bd0dfedb7c1.tar.gz lwn-1a747ee0cc11a198f9e2435add821bd0dfedb7c1.zip | |
locks: don't call ->copy_lock methods on return of conflicting locks
The file_lock structure is used both as a heavy-weight representation of
an active lock, with pointers to reference-counted structures, etc., and
as a simple container for parameters that describe a file lock.
The conflicting lock returned from __posix_lock_file is an example of
the latter; so don't call the filesystem or lock manager callbacks when
copying to it. This also saves the need for an unnecessary
locks_init_lock in the nfsv4 server.
Thanks to Trond for pointing out the error.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/locks.c')
| -rw-r--r-- | fs/locks.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/locks.c b/fs/locks.c index 2e0fa661e423..e1ea2fe03681 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -224,7 +224,7 @@ static void locks_copy_private(struct file_lock *new, struct file_lock *fl) /* * Initialize a new lock from an existing file_lock structure. */ -static void __locks_copy_lock(struct file_lock *new, const struct file_lock *fl) +void __locks_copy_lock(struct file_lock *new, const struct file_lock *fl) { new->fl_owner = fl->fl_owner; new->fl_pid = fl->fl_pid; @@ -833,7 +833,7 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str if (!posix_locks_conflict(request, fl)) continue; if (conflock) - locks_copy_lock(conflock, fl); + __locks_copy_lock(conflock, fl); error = -EAGAIN; if (!(request->fl_flags & FL_SLEEP)) goto out; |