Jens Axboe bc490f8173 block: change plugging to use a singly linked list ...

Use a singly linked list for the blk_plug. This saves 8 bytes in the
blk_plug struct, and makes for faster list manipulations than doubly
linked lists. As we don't use the doubly linked lists for anything,
singly linked is just fine.

This yields a bump in default (merging enabled) performance from 7.0
to 7.1M IOPS, and ~7.5M IOPS with merging disabled.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2021-10-19 09:21:42 -06:00

..

acpi

Revert "ACPI: Add memory semantics to acpi_os_map_memory()"

2021-09-23 20:39:36 +02:00

asm-generic

Merge tag 'asm-generic-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2021-10-08 11:57:54 -07:00

clocksource

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crypto

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2021-08-30 12:57:10 -07:00

drm

drm/ttm: Include pagemap.h from ttm_tt.h

2021-08-16 14:44:05 +02:00

dt-bindings

Merge tag 'linux-watchdog-5.15-rc1' of git://www.linux-watchdog.org/linux-watchdog

2021-09-07 13:52:46 -07:00

keys

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kunit

kunit: fix kernel-doc warnings due to mismatched arg names

2021-10-06 17:54:07 -06:00

kvm

KVM: arm64: Fix PMU probe ordering

2021-09-20 12:43:34 +01:00

linux

block: change plugging to use a singly linked list

2021-10-19 09:21:42 -06:00

math-emu

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media

media: v4l: subdev: Add pre_streamon and post_streamoff callbacks

2021-08-04 14:43:51 +02:00

memory

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misc

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net

Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf

2021-10-02 13:55:02 +01:00

pcmcia

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ras

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rdma

Merge branch 'sg_nents' into rdma.git for-next

2021-08-30 09:49:59 -03:00

scsi

block: move struct request to blk-mq.h

2021-10-18 06:17:02 -06:00

soc

net: dsa: tag_ocelot_8021q: break circular dependency with ocelot switch lib

2021-10-12 17:35:18 -07:00

sound

ALSA: hda: intel: Allow repeatedly probing on codec configuration errors

2021-10-07 09:15:22 +02:00

target

scsi: target: Allows backend drivers to fail with specific sense codes

2021-08-17 22:28:40 -04:00

trace

block: don't call blk_status_to_errno in blk_update_request

2021-10-19 05:54:57 -06:00

uapi

Merge tag 'char-misc-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2021-10-17 17:14:00 -10:00

vdso

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video

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xen

xen/privcmd: drop "pages" parameter from xen_remap_pfn()

2021-10-05 08:20:27 +02:00