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authorMaxime Ripard <maxime@cerno.tech>2023-05-09 15:03:40 +0200
committerMaxime Ripard <maxime@cerno.tech>2023-05-09 15:03:40 +0200
commitff32fcca64437f679a2bf1c0a19d5def389a18e2 (patch)
tree122863d5d6159b30fd6834cbe599f8ce1b9e8144 /include/linux/mm_inline.h
parent79c87edd18ec49f5b6fb40175bd1b1fea9398fdb (diff)
parentac9a78681b921877518763ba0e89202254349d1b (diff)
Merge drm/drm-next into drm-misc-next
Start the 6.5 release cycle. Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'include/linux/mm_inline.h')
-rw-r--r--include/linux/mm_inline.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index de1e622dd366..0e1d239a882c 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -557,6 +557,12 @@ pte_install_uffd_wp_if_needed(struct vm_area_struct *vma, unsigned long addr,
/* The current status of the pte should be "cleared" before calling */
WARN_ON_ONCE(!pte_none(*pte));
+ /*
+ * NOTE: userfaultfd_wp_unpopulated() doesn't need this whole
+ * thing, because when zapping either it means it's dropping the
+ * page, or in TTU where the present pte will be quickly replaced
+ * with a swap pte. There's no way of leaking the bit.
+ */
if (vma_is_anonymous(vma) || !userfaultfd_wp(vma))
return;