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Lin Feng 388c705b95 bfq-iosched: Revert "bfq: Fix computation of shallow depth" This reverts commit `6d4d273588`. bfq.limit_depth passes word_depths[] as shallow_depth down to sbitmap core sbitmap_get_shallow, which uses just the number to limit the scan depth of each bitmap word, formula: scan_percentage_for_each_word = shallow_depth / (1 << sbimap->shift) * 100% That means the comments's percentiles 50%, 75%, 18%, 37% of bfq are correct. But after commit patch 'bfq: Fix computation of shallow depth', we use sbitmap.depth instead, as a example in following case: sbitmap.depth = 256, map_nr = 4, shift = 6; sbitmap_word.depth = 64. The resulsts of computed bfqd->word_depths[] are {128, 192, 48, 96}, and three of the numbers exceed core dirver's 'sbitmap_word.depth=64' limit nothing. Signed-off-by: Lin Feng <linf@wangsu.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2021-02-02 20:37:08 -07:00
arch	RISC-V Fixes for 5.11-rc1	2020-12-24 14:05:05 -08:00
block	bfq-iosched: Revert "bfq: Fix computation of shallow depth"	2021-02-02 20:37:08 -07:00
certs	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
crypto	crypto: aegis128 - avoid spurious references crypto_aegis128_update_simd	2020-12-04 18:16:53 +11:00
Documentation	A small set of late-arriving, small documentation fixes.	2020-12-24 14:20:33 -08:00
drivers	null_blk: cleanup zoned mode initialization	2021-01-29 07:49:22 -07:00
fs	Revert "block: simplify set_init_blocksize" to regain lost performance	2021-01-27 09:14:12 -07:00
include	nvme-pci: allow use of cmb on v1.4 controllers	2021-01-18 18:58:18 +01:00
init	kasan, arm64: only use kasan_depth for software modes	2020-12-22 12:55:07 -08:00
ipc	Merge branch 'akpm' (patches from Andrew)	2020-12-15 12:53:37 -08:00
kernel	Misc fixes/updates:	2020-12-27 09:06:10 -08:00
lib	kasan: introduce CONFIG_KASAN_HW_TAGS	2020-12-22 12:55:07 -08:00
LICENSES	LICENSES: Add the CC-BY-4.0 license	2020-12-08 10:33:27 -07:00
mm	virtio,vdpa: features, cleanups, fixes	2020-12-24 12:06:46 -08:00
net	9p for 5.11-rc1	2020-12-21 10:28:02 -08:00
samples	ARM: SoC drivers for v5.11	2020-12-16 16:38:41 -08:00
scripts	Merge branch 'for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux	2020-12-25 11:05:32 -08:00
security	Provide a fix for the incorrect handling of privilege	2020-12-24 14:08:43 -08:00
sound	sound fixes for 5.11-rc1	2020-12-23 15:11:08 -08:00
tools	Fix a segfault that occurs when built with Clang.	2020-12-27 09:08:23 -08:00
usr	Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-08-07 13:29:39 -07:00
virt	ARM:	2020-12-20 10:44:05 -08:00
.clang-format	RDMA 5.10 pull request	2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore	.gitignore: docs: ignore sphinx_*/ directories	2020-09-10 10:44:31 -06:00
.mailmap	RDMA 5.11 pull request	2020-12-16 13:42:26 -08:00
COPYING
CREDITS	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-12-11 22:29:38 -08:00
Kbuild
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	Misc fixes/updates:	2020-12-27 09:06:10 -08:00
Makefile	Linux 5.11-rc1	2020-12-27 15:30:22 -08:00
README

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.