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Sergey Senozhatsky df9cd3cbf2 zsmalloc: do not scan for allocated objects in empty zspage
Patch series "zsmalloc: small compaction improvements", v2.

A tiny series that can reduce the number of find_alloced_obj() invocations
(which perform a linear scan of sub-page) during compaction.  Inspired by
Alexey Romanov's findings.


This patch (of 3):

zspage migration can terminate as soon as it moves the last allocated
object from the source zspage.  Add a simple helper zspage_empty() that
tests zspage ->inuse on each migration iteration.

Link: https://lkml.kernel.org/r/20230624053120.643409-2-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Suggested-by: Alexey Romanov <AVRomanov@sberdevices.ru>
Reviewed-by: Alexey Romanov <avromanov@sberdevices.ru>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-08-18 10:12:07 -07:00
arch arm64: mte: simplify swap tag restoration logic 2023-08-18 10:12:02 -07:00
block block-6.5-2023-07-21 2023-07-22 11:05:15 -07:00
certs
crypto crypto: algif_hash - Fix race between MORE and non-MORE sends 2023-07-08 22:48:42 +10:00
Documentation TTY/Serial fixes for 6.5-rc4 2023-07-30 11:51:36 -07:00
drivers mm: remove arguments of show_mem() 2023-08-18 10:12:02 -07:00
fs fs: convert block_commit_write to return void 2023-08-18 10:12:07 -07:00
include mm/mm_init.c: remove obsolete macro HASH_SMALL 2023-08-18 10:12:07 -07:00
init mm: remove arguments of show_mem() 2023-08-18 10:12:02 -07:00
io_uring io_uring-6.5-2023-07-28 2023-07-28 10:19:44 -07:00
ipc
kernel mm/mm_init.c: remove obsolete macro HASH_SMALL 2023-08-18 10:12:07 -07:00
lib maple_tree: add a fast path case in mas_wr_slot_store() 2023-08-18 10:12:05 -07:00
LICENSES
mm zsmalloc: do not scan for allocated objects in empty zspage 2023-08-18 10:12:07 -07:00
net A patch to reduce the potential for erroneous RBD exclusive lock 2023-07-28 10:47:24 -07:00
rust rust: error: impl Debug for Error with errname() integration 2023-06-13 01:24:42 +02:00
samples arm64: ftrace: Add direct call trampoline samples support 2023-07-10 17:51:54 -04:00
scripts x86: 2023-07-30 11:19:08 -07:00
security security: keys: perform capable check only on privileged operations 2023-07-28 18:07:41 +00:00
sound ASoC: Fixes for v6.5 2023-07-27 14:54:23 +02:00
tools maple_tree: add test for expanding range in RCU mode 2023-08-18 10:12:05 -07:00
usr
virt KVM: Grab a reference to KVM for VM and vCPU stats file descriptors 2023-07-29 11:05:28 -04:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Revert ".gitignore: ignore *.cover and *.mbx" 2023-07-04 15:05:12 -07:00
.mailmap mailmap: update remaining active codeaurora.org email addresses 2023-07-27 13:07:05 -07:00
.rustfmt.toml
COPYING
CREDITS - Address -Wmissing-prototype warnings 2023-06-26 16:43:54 -07:00
Kbuild
Kconfig
MAINTAINERS USB fixes for 6.5-rc4 2023-07-30 11:57:51 -07:00
Makefile Linux 6.5-rc4 2023-07-30 13:23:47 -07:00
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.