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Date: Wed, 10 Jun 2009 09:31:05 +0100 From: Steven Whitehouse <swhiteho@...hat.com> To: linux-kernel@...r.kernel.org, cluster-devel@...hat.com Cc: Steven Whitehouse <swhiteho@...hat.com> Subject: [PATCH 24/24] 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 <sandeen@...hat.com> Signed-off-by: Steven Whitehouse <swhiteho@...hat.com> diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 1153a07..3297635 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); -- 1.6.0.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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