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| author | Jens Axboe <jens.axboe@oracle.com> | 2009-01-13 15:28:32 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-01-30 12:34:37 +0100 |
| commit | cec0707e40ae25794b5a2de7b7f03c51961f80d9 (patch) | |
| tree | 85975a5b68ebf20bdb54b01846484fbc4b2c6455 /block/blk-core.c | |
| parent | dbdac9b71dff5d27885f82eb2cfca310861fdf9e (diff) | |
| download | lwn-cec0707e40ae25794b5a2de7b7f03c51961f80d9.tar.gz lwn-cec0707e40ae25794b5a2de7b7f03c51961f80d9.zip | |
block: silently error an unsupported barrier bio
This fixes a "regression" from 2.6.28, where the barrier probes that file
systems may do would trigger additional end request warnings in dmesg.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 9e2e86fb78b8..ae75c047f45d 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1451,6 +1451,11 @@ static inline void __generic_make_request(struct bio *bio) err = -EOPNOTSUPP; goto end_io; } + if (bio_barrier(bio) && bio_has_data(bio) && + (q->next_ordered == QUEUE_ORDERED_NONE)) { + err = -EOPNOTSUPP; + goto end_io; + } ret = q->make_request_fn(q, bio); } while (ret); |