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Christoph Hellwig 9bb33f24ab block: refactor the bounce buffering code 
Get rid of all the PFN arithmetics and just use an enum for the two
remaining options, and use PageHighMem for the actual bounce decision.

Add a fast path to entirely avoid the call for the common case of a queue
not using the legacy bouncing code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20210331073001.46776-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-06 09:28:17 -06:00
..
partitions block: revert "block: fix bd_size_lock use" 2021-02-28 20:12:02 -07:00
badblocks.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
bfq-cgroup.c block, bfq: merge bursts of newly-created queues 2021-03-25 10:50:07 -06:00
bfq-iosched.c block, bfq: merge bursts of newly-created queues 2021-03-25 10:50:07 -06:00
bfq-iosched.h block, bfq: merge bursts of newly-created queues 2021-03-25 10:50:07 -06:00
bfq-wf2q.c block, bfq: always inject I/O of queues blocked by wakers 2021-03-25 10:50:07 -06:00
bio-integrity.c block: remove BLK_BOUNCE_ISA support 2021-04-06 09:28:17 -06:00
bio.c block: rename BIO_MAX_PAGES to BIO_MAX_VECS 2021-03-11 07:47:48 -07:00
blk-cgroup-rwstat.c blk-cgroup: Fix the recursive blkg rwstat 2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h
blk-cgroup.c for-5.12/block-2021-02-17 2021-02-21 11:02:48 -08:00
blk-core.c block: refactor the bounce buffering code 2021-04-06 09:28:17 -06:00
blk-crypto-fallback.c block: rename BIO_MAX_PAGES to BIO_MAX_VECS 2021-03-11 07:47:48 -07:00
blk-crypto-internal.h block: make blk_crypto_rq_bio_prep() able to fail 2020-10-05 10:47:43 -06:00
blk-crypto.c dm: support key eviction from keyslot managers of underlying devices 2021-02-11 09:45:25 -05:00
blk-exec.c block: drop removed argument from kernel-doc of blk_execute_rq() 2021-01-29 07:43:29 -07:00
blk-flush.c block: use an on-stack bio in blkdev_issue_flush 2021-01-27 09:51:48 -07:00
blk-integrity.c block: remove the unused blk_integrity_merge_bio export 2020-10-06 07:29:53 -06:00
blk-ioc.c block: remove retry loop in ioc_release_fn() 2020-07-16 10:22:15 -06:00
blk-iocost.c blk-iocost: fix NULL iocg deref from racing against initialization 2021-01-05 11:33:32 -07:00
blk-iolatency.c block: Remove redundant 'return' statement 2020-10-08 07:59:48 -06:00
blk-lib.c block: rename BIO_MAX_PAGES to BIO_MAX_VECS 2021-03-11 07:47:48 -07:00
blk-map.c block: remove BLK_BOUNCE_ISA support 2021-04-06 09:28:17 -06:00
blk-merge.c block: store a block_device pointer in struct bio 2021-01-24 18:17:20 -07:00
blk-mq-cpumap.c blk-mq: remove the calling of local_memory_node() 2020-10-20 07:08:17 -06:00
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c block: Drop leftover references to RQF_SORTED 2021-03-01 10:15:07 -07:00
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-rdma.c
blk-mq-sched.c block: Drop leftover references to RQF_SORTED 2021-03-01 10:15:07 -07:00
blk-mq-sched.h block: get rid of the trace rq insert wrapper 2021-02-22 06:37:41 -07:00
blk-mq-sysfs.c blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue 2020-10-09 12:46:28 -06:00
blk-mq-tag.c blk-mq: Always use blk_mq_is_sbitmap_shared 2021-04-06 09:24:07 -06:00
blk-mq-tag.h blk-mq: Relocate hctx_may_queue() 2020-09-03 15:20:47 -06:00
blk-mq-virtio.c
blk-mq.c for-5.12/block-ipi-2021-02-21 2021-02-22 10:53:05 -08:00
blk-mq.h blk-mq: test QUEUE_FLAG_HCTX_ACTIVE for sbitmap_shared in hctx_may_queue 2021-01-24 21:25:17 -07:00
blk-pm.c scsi: block: Fix a race in the runtime power management code 2020-12-09 11:41:41 -05:00
blk-pm.h block: Remove unused blk_pm_*() function definitions 2021-02-22 06:33:48 -07:00
blk-rq-qos.c Revert "blk-rq-qos: remove redundant finish_wait to rq_qos_wait." 2020-07-15 09:33:37 -06:00
blk-rq-qos.h
blk-settings.c block: refactor the bounce buffering code 2021-04-06 09:28:17 -06:00
blk-stat.c blk-stat: make q->stats->lock irqsafe 2020-09-01 16:48:46 -06:00
blk-stat.h
blk-sysfs.c block: add sysfs entry for virt boundary mask 2021-04-06 09:23:23 -06:00
blk-throttle.c block: store a block_device pointer in struct bio 2021-01-24 18:17:20 -07:00
blk-timeout.c block: blk-timeout: delete duplicated word 2020-07-31 16:29:47 -06:00
blk-wbt.c blk: wbt: remove unused parameter from wbt_should_throttle 2021-01-26 13:13:00 -07:00
blk-wbt.h blk-wbt: remove wbt_update_limits 2020-05-29 16:30:39 -06:00
blk-zoned.c block: Discard page cache of zone reset target range 2021-03-11 11:49:25 -07:00
blk.h block: refactor the bounce buffering code 2021-04-06 09:28:17 -06:00
bounce.c block: refactor the bounce buffering code 2021-04-06 09:28:17 -06:00
bsg-lib.c block: drop double zeroing 2020-09-23 09:18:13 -06:00
bsg.c block: remove unnecessary argument from blk_execute_rq 2021-01-24 21:52:39 -07:00
cmdline-parser.c
elevator.c block: fix comment and add lockdep assert 2020-10-09 12:34:06 -06:00
genhd.c block: Suppress uevent for hidden device when removed 2021-03-11 11:48:25 -07:00
ioctl.c block: reopen the device in blkdev_reread_part 2021-02-23 19:23:22 -07:00
ioprio.c block: grant IOPRIO_CLASS_RT to CAP_SYS_NICE 2020-09-01 19:38:33 -06:00
Kconfig blk-wbt: Remove obsolete multiqueue I/O scheduling comment 2020-09-01 16:49:26 -06:00
Kconfig.iosched treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
keyslot-manager.c - Fix DM integrity's HMAC support to provide enhanced security of 2021-02-22 10:22:54 -08:00
kyber-iosched.c kyber: introduce kyber_depth_updated() 2021-02-22 12:37:57 -07:00
Makefile blk-mq: merge blk-softirq.c into blk-mq.c 2020-06-24 09:15:56 -06:00
mq-deadline.c block: get rid of the trace rq insert wrapper 2021-02-22 06:37:41 -07:00
opal_proto.h
scsi_ioctl.c block: remove BLK_BOUNCE_ISA support 2021-04-06 09:28:17 -06:00
sed-opal.c
t10-pi.c