This patch fixes memory leak in error path.
In reality, we don't need to call cpuup_canceled(cpu) for now.
But upcoming cpu hotplug error handling change needs this.
Cc: Christoph Lameter <[EMAIL PROTECTED]>
Cc: Gautham R Shenoy <[EMAIL PROTECTED]>
Cc: Pekka Enberg <[EMAIL PROTECTED]>
Signed-off-by: Akinobu Mita <[EMAIL PROTECTED]>
---
mm/slab.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
Index: 2.6-git/mm/slab.c
===================================================================
--- 2.6-git.orig/mm/slab.c
+++ 2.6-git/mm/slab.c
@@ -1282,13 +1282,18 @@ static int __cpuinit cpuup_prepare(long
shared = alloc_arraycache(node,
cachep->shared * cachep->batchcount,
0xbaadf00d);
- if (!shared)
+ if (!shared) {
+ kfree(nc);
goto bad;
+ }
}
if (use_alien_caches) {
alien = alloc_alien_cache(node, cachep->limit);
- if (!alien)
+ if (!alien) {
+ kfree(shared);
+ kfree(nc);
goto bad;
+ }
}
cachep->array[cpu] = nc;
l3 = cachep->nodelists[node];
@@ -1315,6 +1320,7 @@ static int __cpuinit cpuup_prepare(long
}
return 0;
bad:
+ cpuup_canceled(cpu);
return -ENOMEM;
}
--
-
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