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block: add accessors for setting/querying request deadline

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We reduce the resolution of request expiry, but since we're already
using jiffies for this where resolution depends on the kernel
configuration and since the timeout resolution is coarse anyway,
that should be fine.

Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2018-01-09 14:23:42 -07:00
parent 76a86f9d02
commit 0a72e7f449
4 changed files with 27 additions and 8 deletions
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4
include/linux/blkdev.h
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@ -257,7 +257,9 @@ struct request {
struct u64_stats_sync aborted_gstate_sync;
u64 aborted_gstate;
unsigned long deadline;
/* access through blk_rq_set_deadline, blk_rq_deadline */
unsigned long __deadline;
struct list_head timeout_list;
/*