The patch titled
Subject: fs/proc/page: remove unneeded PageTail && PageSlab check
has been added to the -mm mm-unstable branch. Its filename is
fs-proc-page-remove-unneeded-pagetail-pageslab-check.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fs-proc-page-remove-unneeded-pagetail-pageslab-check.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: fs/proc/page: remove unneeded PageTail && PageSlab check
Date: Fri, 10 Nov 2023 11:33:18 +0800
Patch series "mm: remove page idle and young wrapper", v2.
Convert to use folio idle and young functions instead of page ones,
then remove all page idle and young wrapper.
This patch (of 7):
After commit dcb351cd095a ("page-flags: define behavior SL*B-related flags
on compound pages"), the slab could not be a tail, remove unneeded
PageTail && PageSlab check.
Link: https://lkml.kernel.org/r/20231110033324.2455523-1-wangkefeng.wang@xxxxxxxxxx
Link: https://lkml.kernel.org/r/20231110033324.2455523-2-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Gregory Price <gregory.price@xxxxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/page.c | 3 ---
1 file changed, 3 deletions(-)
--- a/fs/proc/page.c~fs-proc-page-remove-unneeded-pagetail-pageslab-check
+++ a/fs/proc/page.c
@@ -184,9 +184,6 @@ u64 stable_page_flags(struct page *page)
u |= kpf_copy_bit(k, KPF_LOCKED, PG_locked);
u |= kpf_copy_bit(k, KPF_SLAB, PG_slab);
- if (PageTail(page) && PageSlab(page))
- u |= 1 << KPF_SLAB;
-
u |= kpf_copy_bit(k, KPF_ERROR, PG_error);
u |= kpf_copy_bit(k, KPF_DIRTY, PG_dirty);
u |= kpf_copy_bit(k, KPF_UPTODATE, PG_uptodate);
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
fs-proc-page-remove-unneeded-pagetail-pageslab-check.patch
fs-proc-page-use-a-folio-in-stable_page_flags.patch
fs-proc-page-respect-folio-head-page-flag-placement.patch
mm-huge_memory-use-more-folio-api-in-__split_huge_page_tail.patch
mm-task_mmu-use-a-folio-in-smaps_account.patch
mm-task_mmu-use-a-folio-in-clear_refs_pte_range.patch
page_idle-kill-page-idle-and-young-wrapper.patch
