The patch titled
Subject: mm: memory: remove ->vm_file check on shared writable vmas
has been added to the -mm tree. Its filename is
mm-memory-remove-vm_file-check-on-shared-writable-vmas.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memory-remove-vm_file-check-on-shared-writable-vmas.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memory-remove-vm_file-check-on-shared-writable-vmas.patch
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------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm: memory: remove ->vm_file check on shared writable vmas
Shared anonymous mmaps are implemented with shmem files, so all VMAs with
shared writable semantics also have an underlying backing file.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff -puN mm/memory.c~mm-memory-remove-vm_file-check-on-shared-writable-vmas mm/memory.c
--- a/mm/memory.c~mm-memory-remove-vm_file-check-on-shared-writable-vmas
+++ a/mm/memory.c
@@ -2155,9 +2155,7 @@ reuse:
balance_dirty_pages_ratelimited(mapping);
}
- /* file_update_time outside page_lock */
- if (vma->vm_file)
- file_update_time(vma->vm_file);
+ file_update_time(vma->vm_file);
}
put_page(dirty_page);
if (page_mkwrite) {
@@ -3019,8 +3017,7 @@ static int do_shared_fault(struct mm_str
balance_dirty_pages_ratelimited(mapping);
}
- /* file_update_time outside page_lock */
- if (vma->vm_file && !vma->vm_ops->page_mkwrite)
+ if (!vma->vm_ops->page_mkwrite)
file_update_time(vma->vm_file);
return ret;
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
origin.patch
mm-page_alloc-embed-oom-killing-naturally-into-allocation-slowpath.patch
mm-page_alloc-embed-oom-killing-naturally-into-allocation-slowpath-update.patch
mm-page_alloc-embed-oom-killing-naturally-into-allocation-slowpath-fix.patch
mm-page_allocc-__alloc_pages_nodemask-dont-alter-arg-gfp_mask.patch
mm-page_allocc-__alloc_pages_nodemask-dont-alter-arg-gfp_mask-fix.patch
mm-protect-set_page_dirty-from-ongoing-truncation.patch
mm-memory-remove-vm_file-check-on-shared-writable-vmas.patch
mm-memory-merge-shared-writable-dirtying-branches-in-do_wp_page.patch
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