The patch titled
Subject: fs/userfaultfd.c: simplify the calculation of new_flags
has been added to the -mm tree. Its filename is
fs-userfaultfdc-simplify-the-calculation-of-new_flags.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/fs-userfaultfdc-simplify-the-calculation-of-new_flags.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/fs-userfaultfdc-simplify-the-calculation-of-new_flags.patch
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------------------------------------------------------
From: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx>
Subject: fs/userfaultfd.c: simplify the calculation of new_flags
Finally new_flags equals old vm_flags *OR* vm_flags.
It is not necessary to mask them first.
Link: http://lkml.kernel.org/r/20190806053859.2374-1-richardw.yang@xxxxxxxxxxxxxxx
Signed-off-by: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/userfaultfd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/userfaultfd.c~fs-userfaultfdc-simplify-the-calculation-of-new_flags
+++ a/fs/userfaultfd.c
@@ -1460,7 +1460,7 @@ static int userfaultfd_register(struct u
start = vma->vm_start;
vma_end = min(end, vma->vm_end);
- new_flags = (vma->vm_flags & ~vm_flags) | vm_flags;
+ new_flags = vma->vm_flags | vm_flags;
prev = vma_merge(mm, prev, start, vma_end, new_flags,
vma->anon_vma, vma->vm_file, vma->vm_pgoff,
vma_policy(vma),
_
Patches currently in -mm which might be from richardw.yang@xxxxxxxxxxxxxxx are
mm-fix-typo-in-the-comment-when-calling-function-__setpageuptodate.patch
mm-mmapc-remove-a-never-trigger-warning-in-__vma_adjust.patch
userfaultfd-use-vma_pagesize-for-all-huge-page-size-calculation.patch
userfaultfd-remove-unnecessary-warn_on-in-__mcopy_atomic_hugetlb.patch
userfaultfd-wrap-the-common-dst_vma-check-into-an-inlined-function.patch
fs-userfaultfdc-simplify-the-calculation-of-new_flags.patch
