path: root/mm
diff options
authorChristoph Lameter <clameter@sgi.com>2006-12-13 00:34:11 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-13 09:05:48 -0800
commitdd47ea755693228bf842c779e8afdfa47efb20a3 (patch)
tree3dbaea0064765ff7dbc82e5bf0af73aba15dd6b2 /mm
parent6a8ba9d12150461acc91bd3c9124eac19e853218 (diff)
[PATCH] slab: fix sleeping in atomic bug
Fallback_alloc() does not do the check for GFP_WAIT as done in cache_grow(). Thus interrupts are disabled when we call kmem_getpages() which results in the failure. Duplicate the handling of GFP_WAIT in cache_grow(). Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Jay Cliburn <jacliburn@bellsouth.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 2c655532f5ef..c7576b9027a6 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3252,6 +3252,7 @@ void *fallback_alloc(struct kmem_cache *cache, gfp_t flags)
struct zone **z;
void *obj = NULL;
int nid;
+ gfp_t local_flags = (flags & GFP_LEVEL_MASK);
@@ -3275,7 +3276,12 @@ retry:
* We may trigger various forms of reclaim on the allowed
* set and go into memory reserves if necessary.
+ if (local_flags & __GFP_WAIT)
+ local_irq_enable();
+ kmem_flagcheck(cache, flags);
obj = kmem_getpages(cache, flags, -1);
+ if (local_flags & __GFP_WAIT)
+ local_irq_disable();
if (obj) {
* Insert into the appropriate per node queues

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