From e5dcdd80a60627371f40797426273048630dc8ca Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 9 Sep 2005 16:23:41 -0700 Subject: [PATCH] md: fail IO request to md that require a barrier. md does not yet support BIO_RW_BARRIER, so be honest about it and fail (-EOPNOTSUPP) any such requests. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/md/raid6main.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/md/raid6main.c') diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c index 495dee1d1e8..09cb7272c09 100644 --- a/drivers/md/raid6main.c +++ b/drivers/md/raid6main.c @@ -1570,6 +1570,11 @@ static int make_request (request_queue_t *q, struct bio * bi) sector_t logical_sector, last_sector; struct stripe_head *sh; + if (unlikely(bio_barrier(bi))) { + bio_endio(bi, bi->bi_size, -EOPNOTSUPP); + return 0; + } + md_write_start(mddev, bi); if (bio_data_dir(bi)==WRITE) { -- cgit v1.2.3