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authorSage Weil <sage@newdream.net>2009-09-21 17:02:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-22 07:17:35 -0700
commitbbba809e96539672f775a3d70102657d05816a5b (patch)
tree6cd9f7b028316f50fa3a06d78cb11ee982c3d09b
parent72ff13b7036bc7923e0f2b5f4a724ca260d49aab (diff)
md: avoid use of broken kzalloc mempool
The kzalloc mempool does not re-zero items that have been used and then returned to the pool. Manually zero the allocated multipath_bh instead. Acked-by: Neil Brown <neilb@suse.de> Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/md/multipath.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 89e76819f61..d2d3fd54cc6 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -150,6 +150,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio)
}
mp_bh = mempool_alloc(conf->pool, GFP_NOIO);
+ memset(mp_bh, 0, sizeof(*mp_bh));
mp_bh->master_bio = bio;
mp_bh->mddev = mddev;
@@ -493,7 +494,7 @@ static int multipath_run (mddev_t *mddev)
}
mddev->degraded = conf->raid_disks - conf->working_disks;
- conf->pool = mempool_create_kzalloc_pool(NR_RESERVED_BUFS,
+ conf->pool = mempool_create_kmalloc_pool(NR_RESERVED_BUFS,
sizeof(struct multipath_bh));
if (conf->pool == NULL) {
printk(KERN_ERR