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block: introduce blk_rq_is_passthrough

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commit 57292b58dd upstream.

This can be used to check for fs vs non-fs requests and basically
removes all knowledge of BLOCK_PC specific from the block layer,
as well as preparing for removing the cmd_type field in struct request.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
[only take the blkdev.h changes as we only want the function for backported
patches - gregkh]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christoph Hellwig
2017-01-31 16:57:29 +01:00
committed by Greg Kroah-Hartman
parent edb9044165
commit f3216243df
1 changed files with 7 additions and 2 deletions
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9
include/linux/blkdev.h
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@@ -212,6 +212,11 @@ struct request {
(req)->cmd_flags |= flags; \
} while (0)
static inline bool blk_rq_is_passthrough(struct request *rq)
{
return rq->cmd_type != REQ_TYPE_FS;
}
static inline unsigned short req_get_ioprio(struct request *req)
{
return req->ioprio;
@@ -663,7 +668,7 @@ static inline void blk_clear_rl_full(struct request_list *rl, bool sync)
static inline bool rq_mergeable(struct request *rq)
{
if (rq->cmd_type != REQ_TYPE_FS)
if (blk_rq_is_passthrough(rq))
return false;
if (req_op(rq) == REQ_OP_FLUSH)
@@ -910,7 +915,7 @@ static inline unsigned int blk_rq_get_max_sectors(struct request *rq,
{
struct request_queue *q = rq->q;
if (unlikely(rq->cmd_type != REQ_TYPE_FS))
if (blk_rq_is_passthrough(rq))
return q->limits.max_hw_sectors;
if (!q->limits.chunk_sectors ||