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| author | Ingo Molnar <mingo@kernel.org> | 2023-02-23 11:16:39 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-02-23 11:16:39 +0300 |
| commit | 585a78c1f77be305b1f6adad392f16047fb66ffd (patch) | |
| tree | 765143b487d582832c7695c9fbcae141c35baa4c /mm/mmap.c | |
| parent | 37064583f63eca93c98a9cdf2360485ea05f617a (diff) | |
| parent | 69308402ca6f5b80a5a090ade0b13bd146891420 (diff) | |
| download | linux-585a78c1f77be305b1f6adad392f16047fb66ffd.tar.xz | |
Merge branch 'linus' into objtool/core, to pick up Xen dependencies
Pick up dependencies - freshly merged upstream via xen-next - before applying
dependent objtool changes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 87d929316d57..425a9349e610 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1524,6 +1524,10 @@ int vma_wants_writenotify(struct vm_area_struct *vma, pgprot_t vm_page_prot) if (vma_soft_dirty_enabled(vma) && !is_vm_hugetlb_page(vma)) return 1; + /* Do we need write faults for uffd-wp tracking? */ + if (userfaultfd_wp(vma)) + return 1; + /* Specialty mapping? */ if (vm_flags & VM_PFNMAP) return 0; @@ -2290,7 +2294,7 @@ static inline int munmap_sidetree(struct vm_area_struct *vma, * @start: The aligned start address to munmap. * @end: The aligned end address to munmap. * @uf: The userfaultfd list_head - * @downgrade: Set to true to attempt a write downgrade of the mmap_sem + * @downgrade: Set to true to attempt a write downgrade of the mmap_lock * * If @downgrade is true, check return code for potential release of the lock. */ @@ -2465,7 +2469,7 @@ map_count_exceeded: * @len: The length of the range to munmap * @uf: The userfaultfd list_head * @downgrade: set to true if the user wants to attempt to write_downgrade the - * mmap_sem + * mmap_lock * * This function takes a @mas that is either pointing to the previous VMA or set * to MA_START and sets it up to remove the mapping(s). The @len will be |