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authorJan Kara <jack@suse.cz>2016-12-15 02:07:13 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-15 03:04:09 +0300
commitfe82221f57ea6840a4238a8e077e3f93f257a03f (patch)
tree82091548e178d6b3b32f436354057e6e1779fb9a
parent936ca80d3773bd9b6dda8a0dfd54425f9ec1be9d (diff)
downloadlinux-fe82221f57ea6840a4238a8e077e3f93f257a03f.tar.xz
mm: use passed vm_fault structure for in wp_pfn_shared()
Instead of creating another vm_fault structure, use the one passed to wp_pfn_shared() for passing arguments into pfn_mkwrite handler. Link: http://lkml.kernel.org/r/1479460644-25076-7-git-send-email-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/memory.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 78b81e8984df..7ba9cc58dddd 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2273,16 +2273,11 @@ static int wp_pfn_shared(struct vm_fault *vmf, pte_t orig_pte)
struct vm_area_struct *vma = vmf->vma;
if (vma->vm_ops && vma->vm_ops->pfn_mkwrite) {
- struct vm_fault vmf2 = {
- .page = NULL,
- .pgoff = vmf->pgoff,
- .address = vmf->address,
- .flags = FAULT_FLAG_WRITE | FAULT_FLAG_MKWRITE,
- };
int ret;
pte_unmap_unlock(vmf->pte, vmf->ptl);
- ret = vma->vm_ops->pfn_mkwrite(vma, &vmf2);
+ vmf->flags |= FAULT_FLAG_MKWRITE;
+ ret = vma->vm_ops->pfn_mkwrite(vma, vmf);
if (ret & VM_FAULT_ERROR)
return ret;
vmf->pte = pte_offset_map_lock(vma->vm_mm, vmf->pmd,