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block: Stop abusing csd.list for fifo_time

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Block layer currently abuses rq->csd.list.next for storing fifo_time.
That is a terrible hack and completely unnecessary as well. Union
achieves the same space saving in a cleaner way.

Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jens Axboe <axboe@fb.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Jan Kara 2014-02-24 16:39:52 +01:00 • committed by Jens Axboe
parent bf36f9cfa6
commit 8b4922d317
4 changed files with 9 additions and 14 deletions
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1
include/linux/blkdev.h
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@ -99,6 +99,7 @@ struct request {
union {
struct call_single_data csd;
struct work_struct mq_flush_work;
unsigned long fifo_time;
};
struct request_queue *q;