Commit c708443c authored Jan 06, 2006 by NeilBrown Committed by Linus Torvalds Jan 06, 2006

[PATCH] md: make sure bitmap updates are visible through filesystem



When we update a page_cache page in the kernel, we need to flush_dache_page or
userspace might not see the change.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 07dbd377

drivers/md/bitmap.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -315,6 +315,8 @@ static int write_page(struct bitmap bitmap, struct page page, int wait)
		if (bitmap->file == NULL)
		return write_sb_page(bitmap->mddev, bitmap->offset, page, wait);

		flush_dcache_page(page); /* make sure visible to anyone reading the file */

		if (wait)
		lock_page(page);
		else {

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