block: change the request allocation/congestion logic to be sync/async based
This makes sure that we never wait on async IO for sync requests, instead of doing the split on writes vs reads. Signed-off-by:Jens Axboe <jens.axboe@oracle.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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- block/blk-core.c 35 additions, 35 deletionsblock/blk-core.c
- block/blk-sysfs.c 20 additions, 20 deletionsblock/blk-sysfs.c
- block/elevator.c 1 addition, 1 deletionblock/elevator.c
- include/linux/backing-dev.h 6 additions, 6 deletionsinclude/linux/backing-dev.h
- include/linux/blkdev.h 35 additions, 17 deletionsinclude/linux/blkdev.h
- mm/backing-dev.c 5 additions, 5 deletionsmm/backing-dev.c
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