forked from Minki/linux
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 <neilb@suse.de>
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@ -1594,10 +1594,15 @@ static void fix_read_error(conf_t *conf, mddev_t *mddev, r10bio_t *r10_bio)
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rcu_read_lock();
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do {
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sector_t first_bad;
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int bad_sectors;
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d = r10_bio->devs[sl].devnum;
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rdev = rcu_dereference(conf->mirrors[d].rdev);
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if (rdev &&
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test_bit(In_sync, &rdev->flags)) {
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test_bit(In_sync, &rdev->flags) &&
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is_badblock(rdev, r10_bio->devs[sl].addr + sect, s,
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&first_bad, &bad_sectors) == 0) {
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atomic_inc(&rdev->nr_pending);
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rcu_read_unlock();
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success = sync_page_io(rdev,
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