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Update ctime and mtime for memory-mapped files

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Update ctime and mtime for memory-mapped files at a write access on
a present, read-only PTE, as well as at a write on a non-present PTE.

Signed-off-by: Anton Salikhmetov <salikhmetov@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anton Salikhmetov 2008-01-23 02:21:18 +03:00 committed by Linus Torvalds
parent 667984d9e4
commit 8f7b3d156d
1 changed files with 6 additions and 0 deletions
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6
mm/memory.c
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@ -1670,6 +1670,9 @@ static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
unlock:
pte_unmap_unlock(page_table, ptl);
if (dirty_page) {
if (vma->vm_file)
file_update_time(vma->vm_file);
/*
* Yes, Virginia, this is actually required to prevent a race
* with clear_page_dirty_for_io() from clearing the page dirty
@ -2343,6 +2346,9 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
if (anon)
page_cache_release(vmf.page);
else if (dirty_page) {
if (vma->vm_file)
file_update_time(vma->vm_file);
set_page_dirty_balance(dirty_page, page_mkwrite);
put_page(dirty_page);
}