diff options
| author |   David Hildenbrand <david@redhat.com> | 2024-01-22 18:17:51 +0100 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2024-01-25 23:52:21 -0800 |
| commit | e4e3df290f65da6cb27dac1309389c916f27db1a (patch) | |
| tree | 0f6edd6893d61afe246d8a8b14458f3e9ade7d36 /mm/memory.c | |
| parent | mm/huge_memory: fix folio_set_dirty() vs. folio_mark_dirty() (diff) | |
| download | wireguard-linux-e4e3df290f65da6cb27dac1309389c916f27db1a.tar.xz wireguard-linux-e4e3df290f65da6cb27dac1309389c916f27db1a.zip | |
mm/memory: fix folio_set_dirty() vs. folio_mark_dirty() in zap_pte_range()
The correct folio replacement for "set_page_dirty()" is
"folio_mark_dirty()", not "folio_set_dirty()". Using the latter won't
properly inform the FS using the dirty_folio() callback.
This has been found by code inspection, but likely this can result in some
real trouble when zapping dirty PTEs that point at clean pagecache folios.
Yuezhang Mo said: "Without this fix, testing the latest exfat with
xfstests, test cases generic/029 and generic/030 will fail."
Link: https://lkml.kernel.org/r/20240122171751.272074-1-david@redhat.com
Fixes: c46265030b0f ("mm/memory: page_remove_rmap() -> folio_remove_rmap_pte()")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reported-by: Ryan Roberts <ryan.roberts@arm.com>
Closes: https://lkml.kernel.org/r/2445cedb-61fb-422c-8bfb-caf0a2beed62@arm.com
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c index 7e1f4849463a..89bcae0b224d 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1464,7 +1464,7 @@ static unsigned long zap_pte_range(struct mmu_gather *tlb, delay_rmap = 0; if (!folio_test_anon(folio)) { if (pte_dirty(ptent)) { - folio_set_dirty(folio); + folio_mark_dirty(folio); if (tlb_delay_rmap(tlb)) { delay_rmap = 1; force_flush = 1; |