diff options
| author | Tejun Heo <tj@kernel.org> | 2010-09-03 11:56:18 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-09-10 12:35:38 +0200 |
| commit | 3a2edd0d6ddbd5fa3b389ea6db811285415ce6c8 (patch) | |
| tree | 5752d02cc755e242270f700d442f35b5fc9557d9 /block/blk-core.c | |
| parent | e9c7469bb4f502dafc092166201bea1ad5fc0fbf (diff) | |
| download | lwn-3a2edd0d6ddbd5fa3b389ea6db811285415ce6c8.tar.gz lwn-3a2edd0d6ddbd5fa3b389ea6db811285415ce6c8.zip | |
block: make __blk_rq_prep_clone() copy most command flags
Currently __blk_rq_prep_clone() copies only REQ_WRITE and REQ_DISCARD.
There's no reason to omit other command flags and REQ_FUA needs to be
copied to implement FUA support in request-based dm.
REQ_COMMON_MASK which specifies flags to be copied from bio to request
already identifies all the command flags. Define REQ_CLONE_MASK to be
the same as REQ_COMMON_MASK for clarity and make __blk_rq_prep_clone()
copy all flags in the mask.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 495bdc4a23da..2a5b19204546 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -2505,9 +2505,7 @@ EXPORT_SYMBOL_GPL(blk_rq_unprep_clone); static void __blk_rq_prep_clone(struct request *dst, struct request *src) { dst->cpu = src->cpu; - dst->cmd_flags = (rq_data_dir(src) | REQ_NOMERGE); - if (src->cmd_flags & REQ_DISCARD) - dst->cmd_flags |= REQ_DISCARD; + dst->cmd_flags = (src->cmd_flags & REQ_CLONE_MASK) | REQ_NOMERGE; dst->cmd_type = src->cmd_type; dst->__sector = blk_rq_pos(src); dst->__data_len = blk_rq_bytes(src); |