From: Anton Salikhmetov <salikhmetov@gmail.com>
Date: Tue, 22 Jan 2008 23:21:18 +0000 (+0300)
Subject: Update ctime and mtime for memory-mapped files
X-Git-Tag: v2.6.24~15
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=8f7b3d156d348b6766833cd4e272d0d19b501e64;p=linux-2.6-omap-h63xx.git

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: Anton Salikhmetov <salikhmetov@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/memory.c b/mm/memory.c
index 6dd1cd88bfb..4b0144b24c1 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1670,6 +1670,9 @@ gotten:
 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 @@ out_unlocked:
 	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);
 	}