The quilt patch titled
Subject: mm: move common part of pagetable_*_ctor to helper
has been removed from the -mm tree. Its filename was
mm-move-common-part-of-pagetable__ctor-to-helper.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Kevin Brodsky <kevin.brodsky@xxxxxxx>
Subject: mm: move common part of pagetable_*_ctor to helper
Date: Fri, 3 Jan 2025 18:44:10 +0000
Patch series "Account page tables at all levels".
This series should be considered in conjunction with Qi's series [1].
Together, they ensure that page table ctor/dtor are called at all levels
(PTE to PGD) and all architectures, where page tables are regular pages.
Besides the improvement in accounting and general cleanup, this also
create a single place where construction/destruction hooks can be called
for all page tables, namely the now-generic pagetable_dtor() introduced
by Qi, and __pagetable_ctor() introduced in this series.
[1] https://lore.kernel.org/linux-mm/cover.1735549103.git.zhengqi.arch@xxxxxxxxxxxxx/
This patch (of 6):
pagetable_*_ctor all have the same basic implementation. Move the common
part to a helper to reduce duplication.
Link: https://lkml.kernel.org/r/20250103184415.2744423-1-kevin.brodsky@xxxxxxx
Link: https://lkml.kernel.org/r/20250103184415.2744423-2-kevin.brodsky@xxxxxxx
Signed-off-by: Kevin Brodsky <kevin.brodsky@xxxxxxx>
Acked-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Acked-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Ryan Roberts <ryan.roberts@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 28 ++++++++++++----------------
1 file changed, 12 insertions(+), 16 deletions(-)
--- a/include/linux/mm.h~mm-move-common-part-of-pagetable__ctor-to-helper
+++ a/include/linux/mm.h
@@ -2992,6 +2992,14 @@ static inline bool ptlock_init(struct pt
static inline void ptlock_free(struct ptdesc *ptdesc) {}
#endif /* defined(CONFIG_SPLIT_PTE_PTLOCKS) */
+static inline void __pagetable_ctor(struct ptdesc *ptdesc)
+{
+ struct folio *folio = ptdesc_folio(ptdesc);
+
+ __folio_set_pgtable(folio);
+ lruvec_stat_add_folio(folio, NR_PAGETABLE);
+}
+
static inline void pagetable_dtor(struct ptdesc *ptdesc)
{
struct folio *folio = ptdesc_folio(ptdesc);
@@ -3009,12 +3017,9 @@ static inline void pagetable_dtor_free(s
static inline bool pagetable_pte_ctor(struct ptdesc *ptdesc)
{
- struct folio *folio = ptdesc_folio(ptdesc);
-
if (!ptlock_init(ptdesc))
return false;
- __folio_set_pgtable(folio);
- lruvec_stat_add_folio(folio, NR_PAGETABLE);
+ __pagetable_ctor(ptdesc);
return true;
}
@@ -3118,13 +3123,10 @@ static inline spinlock_t *pmd_lock(struc
static inline bool pagetable_pmd_ctor(struct ptdesc *ptdesc)
{
- struct folio *folio = ptdesc_folio(ptdesc);
-
if (!pmd_ptlock_init(ptdesc))
return false;
- __folio_set_pgtable(folio);
ptdesc_pmd_pts_init(ptdesc);
- lruvec_stat_add_folio(folio, NR_PAGETABLE);
+ __pagetable_ctor(ptdesc);
return true;
}
@@ -3149,18 +3151,12 @@ static inline spinlock_t *pud_lock(struc
static inline void pagetable_pud_ctor(struct ptdesc *ptdesc)
{
- struct folio *folio = ptdesc_folio(ptdesc);
-
- __folio_set_pgtable(folio);
- lruvec_stat_add_folio(folio, NR_PAGETABLE);
+ __pagetable_ctor(ptdesc);
}
static inline void pagetable_p4d_ctor(struct ptdesc *ptdesc)
{
- struct folio *folio = ptdesc_folio(ptdesc);
-
- __folio_set_pgtable(folio);
- lruvec_stat_add_folio(folio, NR_PAGETABLE);
+ __pagetable_ctor(ptdesc);
}
extern void __init pagecache_init(void);
_
Patches currently in -mm which might be from kevin.brodsky@xxxxxxx are
