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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: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig 2016-06-09 16:00:35 +02:00 committed by Jens Axboe
parent 60a40096a3
commit ca93e45347
1 changed files with 3 additions and 4 deletions
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7
include/linux/blkdev.h
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@ -96,11 +96,10 @@ struct request {
struct request_queue *q;
struct blk_mq_ctx *mq_ctx;
u64 cmd_flags;
unsigned cmd_type;
unsigned long atomic_flags;
int cpu;
unsigned cmd_type;
u64 cmd_flags;
unsigned long atomic_flags;
/* the following two fields are internal, NEVER access directly */
unsigned int __data_len; /* total data len */