Commit 8f7b3d15 authored by Anton Salikhmetov's avatar Anton Salikhmetov Committed by Linus Torvalds
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Update ctime and mtime for memory-mapped files

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: default avatarAnton Salikhmetov <>
Signed-off-by: default avatarLinus Torvalds <>
parent 667984d9
......@@ -1670,6 +1670,9 @@ gotten:
pte_unmap_unlock(page_table, ptl);
if (dirty_page) {
if (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 @@ out_unlocked:
if (anon)
else if (dirty_page) {
if (vma->vm_file)
set_page_dirty_balance(dirty_page, page_mkwrite);
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