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[dm-devel] [PATCH] dm-thinp: check allocation failure



dm-thinp: check allocation failure

Signed-off-by: Mikulas Patocka <mpatocka redhat com>

---
 drivers/md/dm-thin.c |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux-3.0-fast/drivers/md/dm-thin.c
===================================================================
--- linux-3.0-fast.orig/drivers/md/dm-thin.c	2011-08-04 18:07:18.000000000 +0200
+++ linux-3.0-fast/drivers/md/dm-thin.c	2011-08-04 18:07:37.000000000 +0200
@@ -160,6 +160,10 @@ static struct bio_prison *prison_create(
 	spin_lock_init(&prison->lock);
 	prison->cell_pool = mempool_create_kmalloc_pool(nr_cells,
 							sizeof(struct cell));
+	if (!prison->cell_pool) {
+		kfree(prison);
+		return NULL;
+	}
 	prison->nr_buckets = nr_buckets;
 	prison->hash_mask = nr_buckets - 1;
 	prison->cells = (struct hlist_head *) (prison + 1);


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