Commit ca93e453 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

block: better packing for struct request 



Keep the 32-bit CPU and cmd_type flags together to avoid holes on 64-bit
architectures.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 60a40096

include/linux/blkdev.h

+2 −3
Original line number Diff line number Diff line
@@ -96,12 +96,11 @@ struct request { 
	struct request_queue *q;

	struct blk_mq_ctx *mq_ctx;



	u64 cmd_flags;

	int cpu;

	unsigned cmd_type;

	u64 cmd_flags;

	unsigned long atomic_flags;



	int cpu;



	/* the following two fields are internal, NEVER access directly */

	unsigned int __data_len;	/* total data len */

	sector_t __sector;		/* sector cursor */