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[PATCH] revert slab.c locking change 

Chandra Seetharaman reported SLAB crashes caused by the slab.c lock
annotation patch.  There is only one chunk of that patch that has a
material effect on the slab logic - this patch undoes that chunk.

This was confirmed to fix the slab problem by Chandra.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2006-07-13 09:12:21 +02:00 committed by Linus Torvalds
parent 3e705f279a
commit fc818301a8
1 changed files with 0 additions and 9 deletions
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9
mm/slab.c
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@ -3119,16 +3119,7 @@ static void free_block(struct kmem_cache *cachep, void **objpp, int nr_objects,
if (slabp->inuse == 0) {
if (l3->free_objects > l3->free_limit) {
l3->free_objects -= cachep->num;
/*
* It is safe to drop the lock. The slab is
* no longer linked to the cache. cachep
* cannot disappear - we are using it and
* all destruction of caches must be
* serialized properly by the user.
*/
spin_unlock(&l3->list_lock);
slab_destroy(cachep, slabp);
spin_lock(&l3->list_lock);
} else {
list_add(&slabp->list, &l3->slabs_free);
}