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bdb9f5b173
The commit af8a7c13b516 has a problem that fsync returns EINVAL for block device. This patch treats block devices as a special case. https://cygwin.com/pipermail/cygwin/2023-January/252916.html Fixes: af8a7c13b516 ("Cygwin: fsync: Return EINVAL for special files.") Reported-by: Yano Ray <yanorei@hotmail.co.jp> Reviewed-by: Corinna Vinschen <corinna@vinschen.de> Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>