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lockd: simplify nlmsvc_grant_blocked

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Reorganize nlmsvc_grant_blocked() to make full use of posix_lock_file().  Note
that there's no need for separate calls to posix_test_lock(),
posix_locks_deadlock(), or posix_block_lock().

Signed-off-by: Andy Adamson <andros@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Andy Adamson 2006-03-20 13:44:25 -05:00 committed by Trond Myklebust
parent 15dadef946
commit 5de0e5024a
1 changed files with 6 additions and 11 deletions
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17
fs/lockd/svclock.c
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@ -519,7 +519,6 @@ nlmsvc_grant_blocked(struct nlm_block *block)
{
struct nlm_file *file = block->b_file;
struct nlm_lock *lock = &block->b_call.a_args.lock;
struct file_lock *conflock;
int error;
dprintk("lockd: grant blocked lock %p\n", block);
@ -539,19 +538,15 @@ nlmsvc_grant_blocked(struct nlm_block *block)
}
/* Try the lock operation again */
if ((conflock = posix_test_lock(file->f_file, &lock->fl)) != NULL) {
/* Bummer, we blocked again */
error = posix_lock_file(file->f_file, &lock->fl);
switch (error) {
case 0:
break;
case -EAGAIN:
dprintk("lockd: lock still blocked\n");
nlmsvc_insert_block(block, NLM_NEVER);
posix_block_lock(conflock, &lock->fl);
goto out_unlock;
}
/* Alright, no conflicting lock. Now lock it for real. If the
* following yields an error, this is most probably due to low
* memory. Retry the lock in a few seconds.
*/
if ((error = posix_lock_file(file->f_file, &lock->fl)) < 0) {
default:
printk(KERN_WARNING "lockd: unexpected error %d in %s!\n",
-error, __FUNCTION__);
nlmsvc_insert_block(block, 10 * HZ);