ocfs2: Avoid direct write if we fall back to buffered I/O
when we fall back to buffered write from direct write, we call __generic_file_aio_write() but that will end up doing direct write even we are only prepared to do buffered write because the file has the O_DIRECT flag set. This is a fix for https://bugzilla.novell.com/show_bug.cgi?id=591039 revised with Joel's comments. Signed-off-by: NLi Dongyang <lidongyang@novell.com> Acked-by: NMark Fasheh <mfasheh@suse.com> Signed-off-by: NJoel Becker <joel.becker@oracle.com>
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