Commit bbba809e authored by Sage Weil's avatar Sage Weil Committed by Linus Torvalds

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: default avatarNeil Brown <>
Signed-off-by: default avatarSage Weil <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 72ff13b7
......@@ -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) {
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