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authorNeilBrown <neilb@suse.de>2006-01-06 03:20:45 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 11:34:08 -0500
commitc708443c004f2310abdd7f1c353daa372b37f7a2 (patch)
treeb02286101b7f8e9bcad8c30240cb5247010398b3
parent07dbd37727049c0d56e313e5afcf8db07a9c3e37 (diff)
[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>
-rw-r--r--drivers/md/bitmap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index ee4a3424a8a3..76a189ceb529 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -315,6 +315,8 @@ static int write_page(struct bitmap *bitmap, struct page *page, int wait)
315 if (bitmap->file == NULL) 315 if (bitmap->file == NULL)
316 return write_sb_page(bitmap->mddev, bitmap->offset, page, wait); 316 return write_sb_page(bitmap->mddev, bitmap->offset, page, wait);
317 317
318 flush_dcache_page(page); /* make sure visible to anyone reading the file */
319
318 if (wait) 320 if (wait)
319 lock_page(page); 321 lock_page(page);
320 else { 322 else {