From: NeilBrown Date: Thu, 28 Jul 2011 01:39:24 +0000 (+1000) Subject: md/raid10 - avoid reading from known bad blocks - part 3 X-Git-Tag: firefly_0821_release~3680^2~4823^2~10 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8dbed5cebdf6796bf2618457b3653cf820934366;p=firefly-linux-kernel-4.4.55.git md/raid10 - avoid reading from known bad blocks - part 3 When attempting to repair a read error, don't read from devices with a known bad block. As we are only reading PAGE_SIZE blocks, we don't try to narrow down to smaller regions in the hope that only part of this page is bad - it isn't worth the effort. Signed-off-by: NeilBrown --- diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 37801d68a4cd..a5ecea2672b5 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1594,10 +1594,15 @@ static void fix_read_error(conf_t *conf, mddev_t *mddev, r10bio_t *r10_bio) rcu_read_lock(); do { + sector_t first_bad; + int bad_sectors; + d = r10_bio->devs[sl].devnum; rdev = rcu_dereference(conf->mirrors[d].rdev); if (rdev && - test_bit(In_sync, &rdev->flags)) { + test_bit(In_sync, &rdev->flags) && + is_badblock(rdev, r10_bio->devs[sl].addr + sect, s, + &first_bad, &bad_sectors) == 0) { atomic_inc(&rdev->nr_pending); rcu_read_unlock(); success = sync_page_io(rdev,