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block: introduce blk_rq_is_passthrough

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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>
This commit is contained in:
Christoph Hellwig 2017-01-31 16:57:29 +01:00 • committed by Jens Axboe
parent 09fc54ccc4
commit 57292b58dd
21 changed files with 59 additions and 53 deletions
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4
include/linux/blktrace_api.h
View file

@ -114,12 +114,12 @@ extern void blk_fill_rwbs(char *rwbs, unsigned int op, int bytes);
static inline sector_t blk_rq_trace_sector(struct request *rq)
{
return (rq->cmd_type != REQ_TYPE_FS) ? 0 : blk_rq_pos(rq);
return blk_rq_is_passthrough(rq) ? 0 : blk_rq_pos(rq);
}
static inline unsigned int blk_rq_trace_nr_sectors(struct request *rq)
{
return (rq->cmd_type != REQ_TYPE_FS) ? 0 : blk_rq_sectors(rq);
return blk_rq_is_passthrough(rq) ? 0 : blk_rq_sectors(rq);
}
#endif