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authorNeilBrown <neilb@cse.unsw.edu.au>2005-09-09 19:23:41 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-09 19:39:09 -0400
commite5dcdd80a60627371f40797426273048630dc8ca (patch)
tree1621f68394ceaa4da86d89c6da3b93fd306415fc /drivers/md/raid5.c
parent3ec67ac1a399d576d48b0736096bcce7721fe3cf (diff)
[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 <neilb@cse.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/md/raid5.c')
-rw-r--r--drivers/md/raid5.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 43f231a467d5..ed859e08d600 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1411,6 +1411,11 @@ static int make_request (request_queue_t *q, struct bio * bi)
1411 sector_t logical_sector, last_sector; 1411 sector_t logical_sector, last_sector;
1412 struct stripe_head *sh; 1412 struct stripe_head *sh;
1413 1413
1414 if (unlikely(bio_barrier(bi))) {
1415 bio_endio(bi, bi->bi_size, -EOPNOTSUPP);
1416 return 0;
1417 }
1418
1414 md_write_start(mddev, bi); 1419 md_write_start(mddev, bi);
1415 1420
1416 if (bio_data_dir(bi)==WRITE) { 1421 if (bio_data_dir(bi)==WRITE) {