[PATCH 004 of 5] md: Make sure read errors are auto-corrected during a 'check' resync in raid1

NeilBrown
2007-10-15T04:36:23Z

Whenever a read error is found, we should attempt to overwrite with
correct data to 'fix' it.

However when do a 'check' pass (which compares data blocks that are
successfully read, but doesn't normally overwrite) we don't do that.
We should.

Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
./drivers/md/raid1.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff .prev/drivers/md/raid1.c ./drivers/md/raid1.c
--- .prev/drivers/md/raid1.c 2007-10-15 14:07:17.000000000 +1000
+++ ./drivers/md/raid1.c 2007-10-15 14:08:55.000000000 +1000
@@ -1214,7 +1214,8 @@ static void sync_request_write(mddev_t *
j = 0;
if (j >= 0)
mddev->resync_mismatches += r1_bio->sectors;
- if (j < 0 || test_bit(MD_RECOVERY_CHECK, &mddev->recovery)) {
+ if (j < 0 || (test_bit(MD_RECOVERY_CHECK, &mddev->recovery)
+ && test_bit(BIO_UPTODATE, &sbio->bi_flags))) {
sbio->bi_end_io = NULL;
rdev_dec_pending(conf->mirrors[i].rdev, mddev);
} else {