diff options
| author | NeilBrown <neilb@suse.de> | 2009-07-01 13:15:35 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-07-19 20:38:52 -0700 |
| commit | 5de149123be72b438c5651ac8ca53223ca05a714 (patch) | |
| tree | d0ab70a07e76d0fca1692ba7fecf6ebc44979f07 | |
| parent | 6891897d22e3df3417f451f5fb921cb9562539e7 (diff) | |
md/raid5: suspend shouldn't affect read requests.
commit a5c308d4d1659b1f4833b863394e3e24cdbdfc6e upstream.
md allows write to regions on an array to be suspended temporarily.
This allows user-space to participate is aspects of reshape.
In particular, data can be copied with not risk of a race.
We should not be blocking read requests though, so don't.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/md/raid5.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index c0434e0b72ac..1f98ea4b1345 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3703,7 +3703,8 @@ static int make_request(struct request_queue *q, struct bio * bi) /* FIXME what if we get a false positive because these * are being updated. */ - if (logical_sector >= mddev->suspend_lo && + if (bio_data_dir(bi) == WRITE && + logical_sector >= mddev->suspend_lo && logical_sector < mddev->suspend_hi) { release_stripe(sh); schedule(); |