cifs: fix interrupted close commands

commit 2659d3bff3e1b000f49907d0839178b101a89887 upstream.

Retry close command if it gets interrupted to not leak open handles on
the server.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reported-by: Duncan Findlay <duncf@duncf.ca>
Suggested-by: Pavel Shilovsky <pshilov@microsoft.com>
Fixes: 6988a619f5b7 ("cifs: allow syscalls to be restarted in __smb_send_rqst()")
Cc: stable@vger.kernel.org
Reviewd-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index fc06c76..c6f8bc6 100644 (file)
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -3248,7 +3248,7 @@ close_exit:
        free_rsp_buf(resp_buftype, rsp);
 
        /* retry close in a worker thread if this one is interrupted */
-       if (rc == -EINTR) {
+       if (is_interrupt_error(rc)) {
                int tmp_rc;
 
                tmp_rc = smb2_handle_cancelled_close(tcon, persistent_fid,