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block: remove deadline __deadline manipulation helpers

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No users left since the removal of the legacy request interface, we can
remove all the magic bit stealing now and make it a normal field.

But use WRITE_ONCE/READ_ONCE on the new deadline field, given that we
don't seem to have any mechanism to guarantee a new value actually
gets seen by other threads.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2018-11-14 17:02:05 +01:00 • committed by Jens Axboe
parent 8f4236d900
commit 079076b341
4 changed files with 8 additions and 43 deletions
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4
include/linux/blkdev.h
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@ -224,9 +224,7 @@ struct request {
refcount_t ref;
unsigned int timeout;
/* access through blk_rq_set_deadline, blk_rq_deadline */
unsigned long __deadline;
unsigned long deadline;
union {
struct __call_single_data csd;