If a process has a pending fatal signal, the request will not be sent in __smb_send_rqst(), but will return -ERESTARTSYS instead. In the loop in smb2_get_dfs_refer(), -ERESTARTSYS returned from SMB_ioctl will cause an retry that still can't succeed and will do some unnecessary work, like allocating/releasing buffer, getting/adding credits. So let us add signal check in the loop to avoid unnecessary retries and return faster. Signed-off-by: Winston Wen <wentao@xxxxxxxxxxxxx> --- fs/smb/client/smb2ops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c index eb1340b9125e..64f78e1b5ea7 100644 --- a/fs/smb/client/smb2ops.c +++ b/fs/smb/client/smb2ops.c @@ -2818,7 +2818,7 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses, FSCTL_DFS_GET_REFERRALS, (char *)dfs_req, dfs_req_size, CIFSMaxBufSize, (char **)&dfs_rsp, &dfs_rsp_size); - if (!is_retryable_error(rc)) + if (!is_retryable_error(rc) || fatal_signal_pending(current)) break; usleep_range(512, 2048); } while (++retry_count < 5); -- 2.40.1
