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FS-Cache: Fix operation handling

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fscache_submit_exclusive_op() adds an operation to the pending list if
other operations are pending.  Fix the check for pending ops as n_ops
must be greater than 0 at the point it is checked as it is incremented
immediately before under lock.

Signed-off-by: Akshat Aranya <aranya@nec-labs.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akshat Aranya 2011-01-14 16:00:47 +00:00 committed by Linus Torvalds
parent acda4721ae
commit ba28b93a52
1 changed files with 1 additions and 1 deletions
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fs/fscache/operation.c
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@ -101,7 +101,7 @@ int fscache_submit_exclusive_op(struct fscache_object *object,
object->n_ops++;
object->n_exclusive++; /* reads and writes must wait */
if (object->n_ops > 0) {
if (object->n_ops > 1) {
atomic_inc(&op->usage);
list_add_tail(&op->pend_link, &object->pending_ops);
fscache_stat(&fscache_n_op_pend);