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authorMiklos Szeredi <miklos@szeredi.hu>2006-06-23 02:05:11 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:43:02 -0700
commitff7b86b82083f24b8637dff1528c7101c18c7f39 (patch)
treebe80c94e4c1410b51190b617fa27caf33b0ba60b /fs/locks.c
parent[PATCH] locks: don't do unnecessary allocations (diff)
downloadlinux-dev-ff7b86b82083f24b8637dff1528c7101c18c7f39.tar.xz
linux-dev-ff7b86b82083f24b8637dff1528c7101c18c7f39.zip
[PATCH] locks: clean up locks_remove_posix()
locks_remove_posix() can use posix_lock_file() instead of doing the lock removal by hand. posix_lock_file() now does exacly the same. The comment about pids no longer applies, posix_lock_file() takes only the owner into account. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/locks.c')
-rw-r--r--fs/locks.c25
1 files changed, 5 insertions, 20 deletions
diff --git a/fs/locks.c b/fs/locks.c
index 2344f241c687..e588e1c265f7 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1896,15 +1896,14 @@ out:
*/
void locks_remove_posix(struct file *filp, fl_owner_t owner)
{
- struct file_lock lock, **before;
+ struct file_lock lock;
/*
* If there are no locks held on this file, we don't need to call
* posix_lock_file(). Another process could be setting a lock on this
* file at the same time, but we wouldn't remove that lock anyway.
*/
- before = &filp->f_dentry->d_inode->i_flock;
- if (*before == NULL)
+ if (!filp->f_dentry->d_inode->i_flock)
return;
lock.fl_type = F_UNLCK;
@@ -1917,25 +1916,11 @@ void locks_remove_posix(struct file *filp, fl_owner_t owner)
lock.fl_ops = NULL;
lock.fl_lmops = NULL;
- if (filp->f_op && filp->f_op->lock != NULL) {
+ if (filp->f_op && filp->f_op->lock != NULL)
filp->f_op->lock(filp, F_SETLK, &lock);
- goto out;
- }
+ else
+ posix_lock_file(filp, &lock);
- /* Can't use posix_lock_file here; we need to remove it no matter
- * which pid we have.
- */
- lock_kernel();
- while (*before != NULL) {
- struct file_lock *fl = *before;
- if (IS_POSIX(fl) && posix_same_owner(fl, &lock)) {
- locks_delete_lock(before);
- continue;
- }
- before = &fl->fl_next;
- }
- unlock_kernel();
-out:
if (lock.fl_ops && lock.fl_ops->fl_release_private)
lock.fl_ops->fl_release_private(&lock);
}