The patch titled
Subject: mm, doc: update read_ahead_kb for MADV_HUGEPAGE
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-doc-update-read_ahead_kb-for-madv_hugepage.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-doc-update-read_ahead_kb-for-madv_hugepage.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Yafang Shao <laoar.shao@xxxxxxxxx>
Subject: mm, doc: update read_ahead_kb for MADV_HUGEPAGE
Date: Wed, 13 Nov 2024 23:07:11 +0800
MADV_HUGEPAGE is a new addition to readahead with behavior distinct from
normal pages. To prevent confusion, we should update the documentation
accordingly.
Link: https://lkml.kernel.org/r/20241113150711.1685-1-laoar.shao@xxxxxxxxx
Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/ABI/stable/sysfs-block | 3 +++
1 file changed, 3 insertions(+)
--- a/Documentation/ABI/stable/sysfs-block~mm-doc-update-read_ahead_kb-for-madv_hugepage
+++ a/Documentation/ABI/stable/sysfs-block
@@ -594,6 +594,9 @@ Description:
[RW] Maximum number of kilobytes to read-ahead for filesystems
on this block device.
+ For MADV_HUGEPAGE, the readahead size may exceed this setting
+ since its granularity is based on the hugepage size.
+
What: /sys/block/<disk>/queue/rotational
Date: January 2009
_
Patches currently in -mm which might be from laoar.shao@xxxxxxxxx are
mm-readahead-fix-large-folio-support-in-async-readahead.patch
mm-doc-update-read_ahead_kb-for-madv_hugepage.patch
