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| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-11-03 20:43:36 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-11-03 20:43:36 +0100 |
| commit | b4f555081fdd27d13e6ff39d455d5aefae9d2c0c (patch) | |
| tree | 917acaae9556ad2c372d001bf786cfbcf8102684 /block/ll_rw_blk.c | |
| parent | Merge branch 'sg' of git://git.kernel.dk/linux-2.6-block (diff) | |
| parent | [BLOCK] Don't allow empty barriers to be passed down to queues that don't gro... (diff) | |
| download | linux-b4f555081fdd27d13e6ff39d455d5aefae9d2c0c.tar.xz linux-b4f555081fdd27d13e6ff39d455d5aefae9d2c0c.zip | |
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
[BLOCK] Don't allow empty barriers to be passed down to queues that don't grok them
dm: bounce_pfn limit added
Deadline iosched: Fix batching fairness
Deadline iosched: Reset batch for ordered requests
Deadline iosched: Factor out finding latter reques
Diffstat (limited to 'block/ll_rw_blk.c')
| -rw-r--r-- | block/ll_rw_blk.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c index 54fd38589674..75c98d58f4dd 100644 --- a/block/ll_rw_blk.c +++ b/block/ll_rw_blk.c @@ -3221,6 +3221,7 @@ static inline void __generic_make_request(struct bio *bio) sector_t old_sector; int ret, nr_sectors = bio_sectors(bio); dev_t old_dev; + int err = -EIO; might_sleep(); @@ -3248,7 +3249,7 @@ static inline void __generic_make_request(struct bio *bio) bdevname(bio->bi_bdev, b), (long long) bio->bi_sector); end_io: - bio_endio(bio, -EIO); + bio_endio(bio, err); break; } @@ -3283,6 +3284,10 @@ end_io: if (bio_check_eod(bio, nr_sectors)) goto end_io; + if (bio_empty_barrier(bio) && !q->prepare_flush_fn) { + err = -EOPNOTSUPP; + goto end_io; + } ret = q->make_request_fn(q, bio); } while (ret); |