author: Punit Agrawal <punit.agrawal@arm.com> 2017-07-06 15:39:42 -0700
committer: Linus Torvalds <torvalds@linux-foundation.org> 2017-07-06 16:24:34 -0700
commit: 7868a2087ec13ec4a5df0c5e00999863be132ba8
parent: d63206ee32b6e64b0e12d46e5d6004afd9913713
Commit Summary:
Diffstat:
1 file changed, 5 insertions, 2 deletions
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 3d0dd082337a..cadcd12a3d35 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -214,6 +214,7 @@ static inline struct uffd_msg userfault_msg(unsigned long address,
* hugepmd ranges.
*/
static inline bool userfaultfd_huge_must_wait(struct userfaultfd_ctx *ctx,
+ struct vm_area_struct *vma,
unsigned long address,
unsigned long flags,
unsigned long reason)
@@ -224,7 +225,7 @@ static inline bool userfaultfd_huge_must_wait(struct userfaultfd_ctx *ctx,
VM_BUG_ON(!rwsem_is_locked(&mm->mmap_sem));
- pte = huge_pte_offset(mm, address);
+ pte = huge_pte_offset(mm, address, vma_mmu_pagesize(vma));
if (!pte)
goto out;
@@ -243,6 +244,7 @@ out:
}
#else
static inline bool userfaultfd_huge_must_wait(struct userfaultfd_ctx *ctx,
+ struct vm_area_struct *vma,
unsigned long address,
unsigned long flags,
unsigned long reason)
@@ -448,7 +450,8 @@ int handle_userfault(struct vm_fault *vmf, unsigned long reason)
must_wait = userfaultfd_must_wait(ctx, vmf->address, vmf->flags,
reason);
else
- must_wait = userfaultfd_huge_must_wait(ctx, vmf->address,
+ must_wait = userfaultfd_huge_must_wait(ctx, vmf->vma,
+ vmf->address,
vmf->flags, reason);
up_read(&mm->mmap_sem);