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| author | Christoph Lameter <cl@linux.com> | 2011-06-01 12:25:44 -0500 |
|---|---|---|
| committer | Pekka Enberg <penberg@kernel.org> | 2011-07-02 13:26:52 +0300 |
| commit | 7e0528dadc9f8b04e4de0dba48a075100c2afe75 (patch) | |
| tree | 708bd8384d867d276d36faa6bfc33fb41fe051f3 /mm | |
| parent | e4a46182e1bcc2ddacff5a35f6b52398b51f1b11 (diff) | |
| download | linux-7e0528dadc9f8b04e4de0dba48a075100c2afe75.tar.gz linux-7e0528dadc9f8b04e4de0dba48a075100c2afe75.tar.bz2 linux-7e0528dadc9f8b04e4de0dba48a075100c2afe75.zip | |
slub: Push irq disable into allocate_slab()
Do the irq handling in allocate_slab() instead of __slab_alloc().
__slab_alloc() is already cluttered and allocate_slab() is already
fiddling around with gfp flags.
v6->v7:
Only increment ORDER_FALLBACK if we get a page during fallback
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slub.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/mm/slub.c b/mm/slub.c index 35f351f26193..add2ae74046c 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1187,6 +1187,11 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) struct kmem_cache_order_objects oo = s->oo; gfp_t alloc_gfp; + flags &= gfp_allowed_mask; + + if (flags & __GFP_WAIT) + local_irq_enable(); + flags |= s->allocflags; /* @@ -1203,12 +1208,17 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) * Try a lower order alloc if possible */ page = alloc_slab_page(flags, node, oo); - if (!page) - return NULL; - stat(s, ORDER_FALLBACK); + if (page) + stat(s, ORDER_FALLBACK); } + if (flags & __GFP_WAIT) + local_irq_disable(); + + if (!page) + return NULL; + if (kmemcheck_enabled && !(s->flags & (SLAB_NOTRACK | DEBUG_DEFAULT_FLAGS))) { int pages = 1 << oo_order(oo); @@ -1849,15 +1859,8 @@ new_slab: goto load_freelist; } - gfpflags &= gfp_allowed_mask; - if (gfpflags & __GFP_WAIT) - local_irq_enable(); - page = new_slab(s, gfpflags, node); - if (gfpflags & __GFP_WAIT) - local_irq_disable(); - if (page) { c = __this_cpu_ptr(s->cpu_slab); stat(s, ALLOC_SLAB); |