xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[PATCH] md: fail IO request to md that require a barrier.

Browse Source 
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>
This commit is contained in:
NeilBrown
2005-09-09 16:23:41 -07:00
committed by Linus Torvalds
parent 3ec67ac1a3
commit e5dcdd80a6
7 changed files with 34 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/md/multipath.c
View File

@@ -169,6 +169,11 @@ static int multipath_make_request (request_queue_t *q, struct bio * bio)
struct multipath_bh * mp_bh;
struct multipath_info *multipath;
if (unlikely(bio_barrier(bio))) {
bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
return 0;
}
mp_bh = mempool_alloc(conf->pool, GFP_NOIO);
mp_bh->master_bio = bio;