OpenCloudOS-Kernel/drivers/block/zram
Christoph Hellwig 3e08773c38 block: switch polling to be bio based
Replace the blk_poll interface that requires the caller to keep a queue
and cookie from the submissions with polling based on the bio.

Polling for the bio itself leads to a few advantages:

 - the cookie construction can made entirely private in blk-mq.c
 - the caller does not need to remember the request_queue and cookie
   separately and thus sidesteps their lifetime issues
 - keeping the device and the cookie inside the bio allows to trivially
   support polling BIOs remapping by stacking drivers
 - a lot of code to propagate the cookie back up the submission path can
   be removed entirely.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Mark Wunderlich <mark.wunderlich@intel.com>
Link: https://lore.kernel.org/r/20211012111226.760968-15-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-10-18 06:17:36 -06:00
..
Kconfig zram: break the strict dependency from lzo 2020-12-15 12:13:47 -08:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
zcomp.c zram: break the strict dependency from lzo 2020-12-15 12:13:47 -08:00
zcomp.h zram: Use local lock to protect per-CPU data 2020-05-28 10:31:10 +02:00
zram_drv.c block: switch polling to be bio based 2021-10-18 06:17:36 -06:00
zram_drv.h Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00