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| author | Barry Song <v-songbaohua@oppo.com> | 2024-06-07 23:13:57 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-04 04:30:07 +0200 |
| commit | f38ee2851918134c1e04730b79714a1a5c895aed (patch) | |
| tree | 3a9147d6410ca699483153f6740c539ecbe87fb2 /mm/mprotect.c | |
| parent | selftests/mm: kvm, mdwe fixes to avoid requiring "make headers" (diff) | |
| download | linux-f38ee2851918134c1e04730b79714a1a5c895aed.tar.xz linux-f38ee2851918134c1e04730b79714a1a5c895aed.zip | |
mm: introduce pmd|pte_needs_soft_dirty_wp helpers for softdirty write-protect
Patch series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and
utilize them", v2.
This patchset introduces the pte_need_soft_dirty_wp and
pmd_need_soft_dirty_wp helpers to determine if write protection is
required for softdirty tracking. These helpers enhance code readability
and improve the overall appearance.
They are then utilized in gup, mprotect, swap, and other related
functions.
This patch (of 2):
This patch introduces the pte_needs_soft_dirty_wp and
pmd_needs_soft_dirty_wp helpers to determine if write protection is
required for softdirty tracking. This can enhance code readability and
improve its overall appearance. These new helpers are then utilized in
gup, huge_memory, and mprotect.
Link: https://lkml.kernel.org/r/20240607211358.4660-1-21cnbao@gmail.com
Link: https://lkml.kernel.org/r/20240607211358.4660-2-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Kairui Song <kasong@tencent.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/mprotect.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c index 888ef66468db..222ab434da54 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -53,7 +53,7 @@ bool can_change_pte_writable(struct vm_area_struct *vma, unsigned long addr, return false; /* Do we need write faults for softdirty tracking? */ - if (vma_soft_dirty_enabled(vma) && !pte_soft_dirty(pte)) + if (pte_needs_soft_dirty_wp(vma, pte)) return false; /* Do we need write faults for uffd-wp tracking? */ |