The quilt patch titled
Subject: mm: make zap_pte_range() handle full within-PMD range
has been removed from the -mm tree. Its filename was
mm-make-zap_pte_range-handle-full-within-pmd-range.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: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Subject: mm: make zap_pte_range() handle full within-PMD range
Date: Wed, 4 Dec 2024 19:09:48 +0800
In preparation for reclaiming empty PTE pages, this commit first makes
zap_pte_range() to handle the full within-PMD range, so that we can more
easily detect and free PTE pages in this function in subsequent commits.
Link: https://lkml.kernel.org/r/76c95ee641da7808cd66d642ab95841df4048295.1733305182.git.zhengqi.arch@xxxxxxxxxxxxx
Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Reviewed-by: Jann Horn <jannh@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Zach O'Keefe <zokeefe@xxxxxxxxxx>
Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/mm/memory.c~mm-make-zap_pte_range-handle-full-within-pmd-range
+++ a/mm/memory.c
@@ -1718,6 +1718,7 @@ static unsigned long zap_pte_range(struc
pte_t *pte;
int nr;
+retry:
tlb_change_page_size(tlb, PAGE_SIZE);
init_rss_vec(rss);
start_pte = pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
@@ -1757,6 +1758,13 @@ static unsigned long zap_pte_range(struc
if (force_flush)
tlb_flush_mmu(tlb);
+ if (addr != end) {
+ cond_resched();
+ force_flush = false;
+ force_break = false;
+ goto retry;
+ }
+
return addr;
}
_
Patches currently in -mm which might be from zhengqi.arch@xxxxxxxxxxxxx are
