cifs: potential missing check for posix_lock_file_wait
posix_lock_file_wait may fail under certain circumstances, and its result is usually checked/returned. But given the complexity of cifs, I'm not sure if the result is intentially left unchecked and always expected to succeed. Signed-off-by: NChengyu Song <csong84@gatech.edu> Acked-by: NJeff Layton <jeff.layton@primarydata.com> Signed-off-by: NSteve French <smfrench@gmail.com>
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