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cifs: use posix_unblock_lock instead of locks_delete_block

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commit 66189be74 (CIFS: Fix VFS lock usage for oplocked files) exported
the locks_delete_block symbol. There's already an exported helper
function that provides this capability however, so make cifs use that
instead and turn locks_delete_block back into a static function.

Note that if fl->fl_next == NULL then this lock has already been through
locks_delete_block(), so we should be OK to ignore an ENOENT error here
and simply not retry the lock.

Cc: Pavel Shilovsky <[email protected]>
Signed-off-by: Jeff Layton <[email protected]>
Acked-by: J. Bruce Fields <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Jeff Layton 2013-06-21 08:58:10 -04:00 • committed by Al Viro
commit 1a9e64a711
3 changed files with 2 additions and 8 deletions
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3
fs/locks.c
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@ -496,13 +496,12 @@ static void __locks_delete_block(struct file_lock *waiter)
/*
*/
void locks_delete_block(struct file_lock *waiter)
static void locks_delete_block(struct file_lock *waiter)
{
lock_flocks();
__locks_delete_block(waiter);
unlock_flocks();
}
EXPORT_SYMBOL(locks_delete_block);
/* Insert waiter into blocker's block list.
* We use a circular list so that processes can be easily woken up in