github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-02 19:43:40 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

mm: pgtable: correct the wrong comment about ptdesc->__page_flags

Browse Source 
Patch series "minor fixes and supplement for ptdesc".

In this series, the [PATCH 1/3] and [PATCH 2/3] are fixes for some issues
discovered during code inspection.

The [PATCH 3/3] is a supplement to ptdesc conversion in s390, I don't know
why this is not done in the commit 6326c26c15 ("s390: convert various
pgalloc functions to use ptdescs"), maybe I missed something.  And since I
don't have an s390 environment, I hope kernel test robot can help compile
and test, and this is why I did not fold [PATCH 2/3] and [PATCH 3/3] into
one patch.


This patch (of 3):

The commit 32cc0b7c9d ("powerpc: add pte_free_defer() for pgtables
sharing page") introduced the use of PageActive flag to page table
fragments tracking, so the ptdesc->__page_flags is not unused, so correct
the wrong comment.

Link: https://lkml.kernel.org/r/cover.1709541697.git.zhengqi.arch@bytedance.com
Link: https://lkml.kernel.org/r/cc42d5915fd98fd802f920de243f535efcfe01db.1709541697.git.zhengqi.arch@bytedance.com
Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Qi Zheng 2024-03-04 19:07:18 +08:00 committed by Andrew Morton
parent 72741db683
commit 22beb471b4
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/mm_types.h
View File

@ -419,7 +419,7 @@ FOLIO_MATCH(compound_head, _head_2a);
/**
* struct ptdesc - Memory descriptor for page tables.
* @__page_flags: Same as page flags. Unused for page tables.
* @__page_flags: Same as page flags. Powerpc only.
* @pt_rcu_head: For freeing page table pages.
* @pt_list: List of used page tables. Used for s390 and x86.
* @_pt_pad_1: Padding that aliases with page's compound head.