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swh:1:snp:0424f14fb59df2ee63d8659da5115ce9de06a349
Revision 0ba09b1733878afe838fe35c310715fda3d46428 authored by Linus Torvalds on 04 December 2022, 20:51:59 UTC, committed by Linus Torvalds on 04 December 2022, 20:51:59 UTC 
Revert "mm: align larger anonymous mappings on THP boundaries"
 
This reverts commit f35b5d7d676e59e401690b678cd3cfec5e785c23.

It has been reported to cause huge performance regressions on some loads
(will-it-scale.per_process_ops, but also building the kernel with
clang).

The commit did speed up gcc builds by a small amount, so it's not an
unambiguous regression, but until the big regressions are understood,
let's revert it.

Reported-by: kernel test robot <yujie.liu@intel.com>
Link: https://lore.kernel.org/r/202210181535.7144dd15-yujie.liu@intel.com
Reported-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/lkml/Y1DNQaoPWxE%2BrGce@dev-arch.thelio-3990X/
Cc: Huang, Ying <ying.huang@intel.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 23393c6
History
Tip revision: e8b0ccb2a787fb43f8091a1eaef9c28a79b00002 authored by Linus Torvalds on 05 April 2024, 17:05:42 UTC
Merge tag '9p-for-6.9-rc3' of https://github.com/martinetd/linux
Tip revision: e8b0ccb
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.clang-format -rw-r--r-- 19.9 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 151 bytes
.gitattributes -rw-r--r-- 62 bytes
.gitignore -rw-r--r-- 2.0 KB
.mailmap -rw-r--r-- 24.4 KB
.rustfmt.toml -rw-r--r-- 369 bytes
COPYING -rw-r--r-- 496 bytes
CREDITS -rw-r--r-- 99.3 KB
Kbuild -rw-r--r-- 2.5 KB
Kconfig -rw-r--r-- 555 bytes
MAINTAINERS -rw-r--r-- 672.3 KB
Makefile -rw-r--r-- 69.0 KB
README -rw-r--r-- 727 bytes

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