diff options
| author | Christoph Lameter <clameter@engr.sgi.com> | 2006-03-22 00:09:07 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 07:54:05 -0800 |
| commit | 1b55253a7f95adc82eb20937b57b3e3e32ba65df (patch) | |
| tree | 5ab3f9e6efa5e2ed2a39843b95dcf95ddb89592a | |
| parent | aab2207cf8d9c343b6b5f0e4d27e1732f8618d14 (diff) | |
| download | linux-1b55253a7f95adc82eb20937b57b3e3e32ba65df.tar.gz | |
[PATCH] slab: remove drain_array_locked
Remove drain_array_locked and use that opportunity to limit the time the l3 lock is taken further. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | mm/slab.c | 31 |
1 files changed, 10 insertions, 21 deletions
diff --git a/mm/slab.c b/mm/slab.c index d73b38e7d7e8..3274144c0d16 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2123,9 +2123,6 @@ static void check_spinlock_acquired_node(struct kmem_cache *cachep, int node) #define check_spinlock_acquired_node(x, y) do { } while(0) #endif -static void drain_array_locked(struct kmem_cache *cachep, - struct array_cache *ac, int force, int node); - static void drain_array(struct kmem_cache *cachep, struct kmem_list3 *l3, struct array_cache *ac, int force, int node); @@ -3522,40 +3519,32 @@ static void enable_cpucache(struct kmem_cache *cachep) cachep->name, -err); } -static void drain_array_locked(struct kmem_cache *cachep, - struct array_cache *ac, int force, int node) +/* + * Drain an array if it contains any elements taking the l3 lock only if + * necessary. + */ +void drain_array(struct kmem_cache *cachep, struct kmem_list3 *l3, + struct array_cache *ac, int force, int node) { int tofree; - check_spinlock_acquired_node(cachep, node); + if (!ac || !ac->avail) + return; if (ac->touched && !force) { ac->touched = 0; } else if (ac->avail) { tofree = force ? ac->avail : (ac->limit + 4) / 5; if (tofree > ac->avail) tofree = (ac->avail + 1) / 2; + spin_lock_irq(&l3->list_lock); free_block(cachep, ac->entry, tofree, node); + spin_unlock_irq(&l3->list_lock); ac->avail -= tofree; memmove(ac->entry, &(ac->entry[tofree]), sizeof(void *) * ac->avail); } } - -/* - * Drain an array if it contains any elements taking the l3 lock only if - * necessary. - */ -static void drain_array(struct kmem_cache *searchp, struct kmem_list3 *l3, - struct array_cache *ac, int force, int node) -{ - if (ac && ac->avail) { - spin_lock_irq(&l3->list_lock); - drain_array_locked(searchp, ac, force, node); - spin_unlock_irq(&l3->list_lock); - } -} - /** * cache_reap - Reclaim memory from caches. * @unused: unused parameter |