From 40bc9a27e00d6c8c7e4dc2865c02d7402a950472 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 10 Jun 2009 09:09:40 +0100 Subject: GFS2: Fix cache coherency between truncate and O_DIRECT read If a page was partially zeroed as the result of a truncate, then it was not being correctly marked dirty. This resulted in the deleted data reappearing if the file was read back via direct I/O. Reported-by: Eric Sandeen Signed-off-by: Steven Whitehouse --- fs/gfs2/bmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 1153a078920..329763530dc 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -1012,7 +1012,7 @@ static int gfs2_block_truncate_page(struct address_space *mapping) gfs2_trans_add_bh(ip->i_gl, bh, 0); zero_user(page, offset, length); - + mark_buffer_dirty(bh); unlock: unlock_page(page); page_cache_release(page); -- cgit v1.2.3-70-g09d2