+ mm-use-passed-vm_fault-structure-for-in-wp_pfn_shared.patch added to -mm tree

+ mm-use-passed-vm_fault-structure-for-in-wp_pfn_shared.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm: use passed vm_fault structure for in wp_pfn_shared()
has been added to the -mm tree.  Its filename is
     mm-use-passed-vm_fault-structure-for-in-wp_pfn_shared.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-use-passed-vm_fault-structure-for-in-wp_pfn_shared.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-use-passed-vm_fault-structure-for-in-wp_pfn_shared.patch

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------------------------------------------------------
From: Jan Kara <jack@suse.cz>
Subject: 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>
---

 mm/memory.c |    9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff -puN mm/memory.c~mm-use-passed-vm_fault-structure-for-in-wp_pfn_shared mm/memory.c
--- a/mm/memory.c~mm-use-passed-vm_fault-structure-for-in-wp_pfn_shared
+++ a/mm/memory.c
@@ -2273,16 +2273,11 @@ static int wp_pfn_shared(struct vm_fault
 	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,
_

Patches currently in -mm which might be from jack@suse.cz are

mm-join-struct-fault_env-and-vm_fault.patch
mm-use-vmf-address-instead-of-of-vmf-virtual_address.patch
mm-use-pgoff-in-struct-vm_fault-instead-of-passing-it-separately.patch
mm-use-passed-vm_fault-structure-in-__do_fault.patch
mm-trim-__do_fault-arguments.patch
mm-use-passed-vm_fault-structure-for-in-wp_pfn_shared.patch
mm-add-orig_pte-field-into-vm_fault.patch
mm-allow-full-handling-of-cow-faults-in-fault-handlers.patch
mm-factor-out-functionality-to-finish-page-faults.patch
mm-move-handling-of-cow-faults-into-dax-code.patch
mm-factor-out-common-parts-of-write-fault-handling.patch
mm-pass-vm_fault-structure-into-do_page_mkwrite.patch
mm-use-vmf-page-during-wp-faults.patch
mm-move-part-of-wp_page_reuse-into-the-single-call-site.patch
mm-provide-helper-for-finishing-mkwrite-faults.patch
mm-change-return-values-of-finish_mkwrite_fault.patch
mm-export-follow_pte.patch
dax-make-cache-flushing-protected-by-entry-lock.patch
dax-protect-pte-modification-on-wp-fault-by-radix-tree-entry-lock.patch
dax-clear-dirty-entry-tags-on-cache-flush.patch