ocfs2: do not use ocfs2_zero_extend during direct IO
In ocfs2_direct_IO_write, we use ocfs2_zero_extend to zero allocated clusters in case of cluster not aligned. But ocfs2_zero_extend uses page cache, this may happen that it clears the data which blockdev_direct_IO has already written. We should use blkdev_issue_zeroout instead of ocfs2_zero_extend during direct IO. So fix this issue by introducing ocfs2_direct_IO_zero_extend and ocfs2_direct_IO_extend_no_holes. Reported-by:Yiwen Jiang <jiangyiwen@huawei.com> Signed-off-by:
Joseph Qi <joseph.qi@huawei.com> Tested-by:
Yiwen Jiang <jiangyiwen@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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