forked from luck/tmp_suning_uos_patched
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>
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@ -150,6 +150,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio)
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}
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mp_bh = mempool_alloc(conf->pool, GFP_NOIO);
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memset(mp_bh, 0, sizeof(*mp_bh));
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mp_bh->master_bio = bio;
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mp_bh->mddev = mddev;
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@ -493,7 +494,7 @@ static int multipath_run (mddev_t *mddev)
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}
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mddev->degraded = conf->raid_disks - conf->working_disks;
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conf->pool = mempool_create_kzalloc_pool(NR_RESERVED_BUFS,
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conf->pool = mempool_create_kmalloc_pool(NR_RESERVED_BUFS,
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sizeof(struct multipath_bh));
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if (conf->pool == NULL) {
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printk(KERN_ERR
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