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Commit 188bd2b1 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

block: move REQ_RAHEAD to common flags 



The information that am I/O is a read-ahead can be useful for drivers.
In fact the NVMe driver already checks it, even if it won't ever be set
at the moment.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarShaun Tancheff <shaun.tancheff@seagate.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent bd1c1c21

include/linux/blk_types.h

+2 −2
Original line number Diff line number Diff line
@@ -163,9 +163,9 @@ enum rq_flag_bits { 
	__REQ_INTEGRITY,	/* I/O includes block integrity payload */

	__REQ_FUA,		/* forced unit access */

	__REQ_PREFLUSH,		/* request for cache flush */

	__REQ_RAHEAD,		/* read ahead, can fail anytime */



	/* bio only flags */

	__REQ_RAHEAD,		/* read ahead, can fail anytime */

	__REQ_THROTTLED,	/* This bio has already been subjected to

				 * throttling rules. Don't do it again. */
@@ -205,7 +205,7 @@ enum rq_flag_bits { 
	(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)

#define REQ_COMMON_MASK \

	(REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | REQ_NOIDLE | \

	 REQ_PREFLUSH | REQ_FUA | REQ_INTEGRITY | REQ_NOMERGE)

	 REQ_PREFLUSH | REQ_FUA | REQ_INTEGRITY | REQ_NOMERGE | REQ_RAHEAD)

#define REQ_CLONE_MASK		REQ_COMMON_MASK



/* This mask is used for both bio and request merge checking */