The patch titled
Subject: mm-add-docs-for-per-order-mthp-split-counters-v3-fix
has been added to the -mm mm-unstable branch. Its filename is
mm-add-docs-for-per-order-mthp-split-counters-v3-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-add-docs-for-per-order-mthp-split-counters-v3-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Lance Yang <ioworker0@xxxxxxxxx>
Subject: mm-add-docs-for-per-order-mthp-split-counters-v3-fix
Date: Sun, 7 Jul 2024 09:36:59 +0800
tweak Documentation/admin-guide/mm/transhuge.rst
Link: https://lkml.kernel.org/r/20240707013659.1151-1-ioworker0@xxxxxxxxx
Cc: Bang Li <libang.li@xxxxxxxxxxxx>
Cc: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Cc: Barry Song <baohua@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Mingzhe Yang <mingzhe.yang@xxxxxx>
Cc: Ryan Roberts <ryan.roberts@xxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Cc: Zi Yan <ziy@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/admin-guide/mm/transhuge.rst | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
--- a/Documentation/admin-guide/mm/transhuge.rst~mm-add-docs-for-per-order-mthp-split-counters-v3-fix
+++ a/Documentation/admin-guide/mm/transhuge.rst
@@ -514,17 +514,16 @@ split
is incremented every time a huge page is successfully split into
smaller orders. This can happen for a variety of reasons but a
common reason is that a huge page is old and is being reclaimed.
- This action implies splitting any block mappings into PTEs.
split_failed
is incremented if kernel fails to split huge
page. This can happen if the page was pinned by somebody.
split_deferred
- is incremented when a huge page is put onto split
- queue. This happens when a huge page is partially unmapped and
- splitting it would free up some memory. Pages on split queue are
- going to be split under memory pressure.
+ is incremented when a huge page is put onto split queue.
+ This happens when a huge page is partially unmapped and splitting
+ it would free up some memory. Pages on split queue are going to
+ be split under memory pressure, if splitting is possible.
As the system ages, allocating huge pages may be expensive as the
system uses memory compaction to copy data around memory to free a
_
Patches currently in -mm which might be from ioworker0@xxxxxxxxx are
mm-add-per-order-mthp-split-counters.patch
mm-add-per-order-mthp-split-counters-v3.patch
mm-add-per-order-mthp-split-counters-fix.patch
mm-add-docs-for-per-order-mthp-split-counters.patch
mm-add-docs-for-per-order-mthp-split-counters-v3.patch
mm-add-docs-for-per-order-mthp-split-counters-v3-fix.patch
