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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-02 14:56:51 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-02 14:56:51 +0100 |
| commit | 8c9076b07c99c2a37a96b9f5265e4def47823c86 (patch) | |
| tree | 368e59df54d7b7ea02d8a626ac85e751883f6836 /mm/huge_memory.c | |
| parent | 59e73854b5fd1213fe90ae993d98c759786c3712 (diff) | |
| parent | 30a7acd573899fd8b8ac39236eff6468b195ac7d (diff) | |
| download | talos-op-linux-8c9076b07c99c2a37a96b9f5265e4def47823c86.tar.gz talos-op-linux-8c9076b07c99c2a37a96b9f5265e4def47823c86.zip | |
Merge 4.15-rc6 into driver-core-next
We want the fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 2f2f5e774902..0e7ded98d114 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -870,7 +870,7 @@ struct page *follow_devmap_pmd(struct vm_area_struct *vma, unsigned long addr, */ WARN_ONCE(flags & FOLL_COW, "mm: In follow_devmap_pmd with FOLL_COW set"); - if (!pmd_access_permitted(*pmd, flags & FOLL_WRITE)) + if (flags & FOLL_WRITE && !pmd_write(*pmd)) return NULL; if (pmd_present(*pmd) && pmd_devmap(*pmd)) @@ -1012,7 +1012,7 @@ struct page *follow_devmap_pud(struct vm_area_struct *vma, unsigned long addr, assert_spin_locked(pud_lockptr(mm, pud)); - if (!pud_access_permitted(*pud, flags & FOLL_WRITE)) + if (flags & FOLL_WRITE && !pud_write(*pud)) return NULL; if (pud_present(*pud) && pud_devmap(*pud)) @@ -1386,7 +1386,7 @@ out_unlock: */ static inline bool can_follow_write_pmd(pmd_t pmd, unsigned int flags) { - return pmd_access_permitted(pmd, WRITE) || + return pmd_write(pmd) || ((flags & FOLL_FORCE) && (flags & FOLL_COW) && pmd_dirty(pmd)); } |
