The patch titled
Subject: mm-shmem-add-mthp-counters-for-anonymous-shmem-fix
has been added to the -mm mm-unstable branch. Its filename is
mm-shmem-add-mthp-counters-for-anonymous-shmem-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-shmem-add-mthp-counters-for-anonymous-shmem-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: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Subject: mm-shmem-add-mthp-counters-for-anonymous-shmem-fix
Date: Thu, 13 Jun 2024 09:08:37 +0800
update Documentation/admin-guide/mm/transhuge.rst
Link: https://lkml.kernel.org/r/d86e2e7f-4141-432b-b2ba-c6691f36ef0b@xxxxxxxxxxxxxxxxx
Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Cc: Barry Song <v-songbaohua@xxxxxxxx>
Cc: Daniel Gomez <da.gomez@xxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: "Huang, Ying" <ying.huang@xxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: Lance Yang <ioworker0@xxxxxxxxx>
Cc: Pankaj Raghav <p.raghav@xxxxxxxxxxx>
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 | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/Documentation/admin-guide/mm/transhuge.rst~mm-shmem-add-mthp-counters-for-anonymous-shmem-fix
+++ a/Documentation/admin-guide/mm/transhuge.rst
@@ -501,6 +501,19 @@ swpout_fallback
Usually because failed to allocate some continuous swap space
for the huge page.
+file_alloc
+ is incremented every time a file huge page is successfully
+ allocated.
+
+file_fallback
+ is incremented if a file huge page is attempted to be allocated
+ but fails and instead falls back to using small pages.
+
+file_fallback_charge
+ is incremented if a file huge page cannot be charged and instead
+ falls back to using small pages even though the allocation was
+ successful.
+
As the system ages, allocating huge pages may be expensive as the
system uses memory compaction to copy data around memory to free a
huge page for use. There are some counters in ``/proc/vmstat`` to help
_
Patches currently in -mm which might be from baolin.wang@xxxxxxxxxxxxxxxxx are
mm-shmem-fix-getting-incorrect-lruvec-when-replacing-a-shmem-folio.patch
mm-memory-extend-finish_fault-to-support-large-folio.patch
mm-memory-extend-finish_fault-to-support-large-folio-fix.patch
mm-shmem-add-thp-validation-for-pmd-mapped-thp-related-statistics.patch
mm-shmem-add-multi-size-thp-sysfs-interface-for-anonymous-shmem.patch
mm-shmem-add-multi-size-thp-sysfs-interface-for-anonymous-shmem-fix.patch
mm-shmem-add-mthp-support-for-anonymous-shmem.patch
mm-shmem-add-mthp-size-alignment-in-shmem_get_unmapped_area.patch
mm-shmem-add-mthp-counters-for-anonymous-shmem.patch
mm-shmem-add-mthp-counters-for-anonymous-shmem-fix.patch
