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md/raid1: skip recovery of already synced areas #248

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md/raid1: skip recovery of already synced areas #248

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6 changes: 5 additions & 1 deletion drivers/md/raid1.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2883,7 +2883,8 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr,
test_bit(Faulty, &rdev->flags)) {
if (i < conf->raid_disks)
still_degraded = true;
} else if (!test_bit(In_sync, &rdev->flags)) {
} else if (!test_bit(In_sync, &rdev->flags) &&
rdev->recovery_offset <= sector_nr) {
bio->bi_opf = REQ_OP_WRITE;
bio->bi_end_io = end_sync_write;
write_targets ++;
Expand All @@ -2892,6 +2893,9 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr,
sector_t first_bad = MaxSector;
sector_t bad_sectors;

if (!test_bit(In_sync, &rdev->flags))
good_sectors = min(rdev->recovery_offset - sector_nr,
(u64)good_sectors);
if (is_badblock(rdev, sector_nr, good_sectors,
&first_bad, &bad_sectors)) {
if (first_bad > sector_nr)
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