block: introduce blk_rq_is_passthrough
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>
diff --git a/block/blk.h b/block/blk.h
index 9a716b5..c1bd4bf 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -249,7 +249,7 @@ static inline int blk_do_io_stat(struct request *rq)
{
return rq->rq_disk &&
(rq->rq_flags & RQF_IO_STAT) &&
- (rq->cmd_type == REQ_TYPE_FS);
+ !blk_rq_is_passthrough(rq);
}
/*