The patch titled
Subject: mm-avoid-access-flag-update-tlb-flush-for-retried-page-fault-v2
has been added to the -mm tree. Its filename is
mm-avoid-access-flag-update-tlb-flush-for-retried-page-fault-v2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-avoid-access-flag-update-tlb-flush-for-retried-page-fault-v2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-avoid-access-flag-update-tlb-flush-for-retried-page-fault-v2.patch
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------------------------------------------------------
From: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Subject: mm-avoid-access-flag-update-tlb-flush-for-retried-page-fault-v2
incorporat comment from Will Deacon, update commit log per discussion
Link: http://lkml.kernel.org/r/1594848990-55657-1-git-send-email-yang.shi@xxxxxxxxxxxxxxxxx
Fixes: 89b15332af7c ("mm: drop mmap_sem before calling balance_dirty_pages() in write fault")
Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Reported-by: Xu Yu <xuyu@xxxxxxxxxxxxxxxxx>
Debugged-by: Xu Yu <xuyu@xxxxxxxxxxxxxxxxx>
Tested-by: Xu Yu <xuyu@xxxxxxxxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Hillf Danton <hdanton@xxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Josef Bacik <josef@xxxxxxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/mm/memory.c~mm-avoid-access-flag-update-tlb-flush-for-retried-page-fault-v2
+++ a/mm/memory.c
@@ -4243,11 +4243,12 @@ static vm_fault_t handle_pte_fault(struc
return do_wp_page(vmf);
}
- if ((vmf->flags & FAULT_FLAG_WRITE) && !(vmf->flags & FAULT_FLAG_TRIED))
- entry = pte_mkdirty(entry);
- else if (vmf->flags & FAULT_FLAG_TRIED)
+ if (vmf->flags & FAULT_FLAG_TRIED)
goto unlock;
+ if (vmf->flags & FAULT_FLAG_WRITE)
+ entry = pte_mkdirty(entry);
+
entry = pte_mkyoung(entry);
if (ptep_set_access_flags(vmf->vma, vmf->address, vmf->pte, entry,
vmf->flags & FAULT_FLAG_WRITE)) {
_
Patches currently in -mm which might be from yang.shi@xxxxxxxxxxxxxxxxx are
mm-avoid-access-flag-update-tlb-flush-for-retried-page-fault.patch
mm-avoid-access-flag-update-tlb-flush-for-retried-page-fault-v2.patch
mm-filemap-clear-idle-flag-for-writes.patch
mm-filemap-add-missing-fgp_-flags-in-kerneldoc-comment-for-pagecache_get_page.patch
mm-thp-remove-debug_cow-switch.patch
