From a5c308d4d1659b1f4833b863394e3e24cdbdfc6e Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 1 Jul 2009 13:15:35 +1000 Subject: [PATCH] md/raid5: suspend shouldn't affect read requests. 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. Cc: stable@kernel.org Signed-off-by: NeilBrown --- drivers/md/raid5.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 92ef9b6abfc7..1f444ae07f89 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3702,7 +3702,8 @@ 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();