Hi Paulo,

Does is_interrupt_error contain a list of all errors for which server
can leave the file handle open?
What about EAGAIN? I see that the server error STATUS_RETRY maps to EAGAIN.

Regards,
Shyam

On Thu, Jan 14, 2021 at 12:01 AM Pavel Shilovsky [off-list ref] wrote:

ср, 13 янв. 2021 г. в 09:16, Paulo Alcantara [off-list ref]:

quoted

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

Signed-off-by: Paulo Alcantara (SUSE) <redacted>
Reported-by: Duncan Findlay <redacted>
Suggested-by: Pavel Shilovsky <redacted>
Fixes: 6988a619f5b7 ("cifs: allow syscalls to be restarted in __smb_send_rqst()")
Cc: stable@vger.kernel.org
---
 fs/cifs/smb2pdu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 067eb44c7baa..794fc3b68b4f 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c

@@ -3248,7 +3248,7 @@ __SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
        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,
--

2.29.2

Thanks for the fix!

Reviewed-by: Pavel Shilovsky <redacted>

--
Best regards,
Pavel Shilovsky

-- 
-Shyam