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authorPawit Pornkitprasan <p.pawit@gmail.com>2012-11-20 19:27:29 +0700
committerPawit Pornkitprasan <p.pawit@gmail.com>2012-11-20 19:27:29 +0700
commitcc7f0ca4b92d7da9d3a7bd674bfd454cc69e7780 (patch)
tree6ffdbe4122642c18f7dbf3eecd93794d49987dcb /mm/slab.c
parent67196921fba94cf21b6c2de7da422d536fc9471d (diff)
parent89d2d133c6947c04a8ab539b997f266535beaafe (diff)
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Merge 3.0.52
Merge branch 'linux-3.0.y' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into jellybean-next Conflicts: drivers/net/tun.c kernel/time/timekeeping.c Change-Id: Iba7fc59ca05114d9e7bade8dfc5bb45229ebf075
Diffstat (limited to 'mm/slab.c')
-rw-r--r--mm/slab.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/mm/slab.c b/mm/slab.c
index d96e223..a67f812 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3218,12 +3218,10 @@ static void *alternate_node_alloc(struct kmem_cache *cachep, gfp_t flags)
if (in_interrupt() || (flags & __GFP_THISNODE))
return NULL;
nid_alloc = nid_here = numa_mem_id();
- get_mems_allowed();
if (cpuset_do_slab_mem_spread() && (cachep->flags & SLAB_MEM_SPREAD))
nid_alloc = cpuset_slab_spread_node();
else if (current->mempolicy)
nid_alloc = slab_node(current->mempolicy);
- put_mems_allowed();
if (nid_alloc != nid_here)
return ____cache_alloc_node(cachep, flags, nid_alloc);
return NULL;
@@ -3246,14 +3244,17 @@ static void *fallback_alloc(struct kmem_cache *cache, gfp_t flags)
enum zone_type high_zoneidx = gfp_zone(flags);
void *obj = NULL;
int nid;
+ unsigned int cpuset_mems_cookie;
if (flags & __GFP_THISNODE)
return NULL;
- get_mems_allowed();
- zonelist = node_zonelist(slab_node(current->mempolicy), flags);
local_flags = flags & (GFP_CONSTRAINT_MASK|GFP_RECLAIM_MASK);
+retry_cpuset:
+ cpuset_mems_cookie = get_mems_allowed();
+ zonelist = node_zonelist(slab_node(current->mempolicy), flags);
+
retry:
/*
* Look through allowed nodes for objects available
@@ -3306,7 +3307,9 @@ retry:
}
}
}
- put_mems_allowed();
+
+ if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !obj))
+ goto retry_cpuset;
return obj;
}