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From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org, smfrench@gmail.com,
	senozhatsky@chromium.org, tom@talpey.com,
	atteh.mailbox@gmail.com, Steve French <stfrench@microsoft.com>
Subject: Re: [PATCH] ksmbd: don't terminate inactive sessions after a few seconds
Date: Fri, 24 Mar 2023 12:50:00 +0900	[thread overview]
Message-ID: <20230324035000.GD3271889@google.com> (raw)
In-Reply-To: <20230321133312.103789-1-linkinjeon@kernel.org>

On (23/03/21 22:33), Namjae Jeon wrote:
[..]
> @@ -335,14 +336,23 @@ static int ksmbd_tcp_readv(struct tcp_transport *t, struct kvec *iov_orig,
>  		} else if (conn->status == KSMBD_SESS_NEED_RECONNECT) {
>  			total_read = -EAGAIN;
>  			break;
> -		} else if ((length == -ERESTARTSYS || length == -EAGAIN) &&
> -			   max_retry) {
> +		} else if (length == -ERESTARTSYS || length == -EAGAIN) {
> +			/*
> +			 * If max_retries is negative, Allow unlimited
> +			 * retries to keep connection with inactive sessions.
> +			 */
> +			if (max_retries == 0) {
> +				total_read = length;
> +				break;
> +			} else if (max_retries > 0) {
> +				max_retries--;
> +			}
> +
>  			usleep_range(1000, 2000);
>  			length = 0;
> -			max_retry--;
>  			continue;
>  		} else if (length <= 0) {
> -			total_read = -EAGAIN;
> +			total_read = length;
>  			break;
>  		}
>  	}

By the way, ksmbd_tcp_readv() calls kvec_array_init() on each iteration.
Shouldn't we call it only if length > 0? That is only if the most recent
call to kernel_recvmsg() has read some data.

  parent reply	other threads:[~2023-03-24  3:50 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-21 13:33 [PATCH] ksmbd: don't terminate inactive sessions after a few seconds Namjae Jeon
2023-03-21 13:33 ` [PATCH] ksmbd: return STATUS_NOT_SUPPORTED on unsupported smb2.0 dialect Namjae Jeon
2023-03-21 13:33 ` [PATCH] ksmbd: return unsupported error on smb1 mount Namjae Jeon
2023-03-23  2:53   ` Sergey Senozhatsky
2023-03-23  4:10     ` Namjae Jeon
2023-03-23  5:00       ` Sergey Senozhatsky
2023-03-23  5:04         ` Namjae Jeon
2023-03-23  5:17           ` [PATCH v2] " Namjae Jeon
2023-03-24  3:44             ` Sergey Senozhatsky
2023-03-24  3:50 ` Sergey Senozhatsky [this message]
2023-03-24  4:28   ` [PATCH] ksmbd: don't terminate inactive sessions after a few seconds Namjae Jeon
2023-03-24  5:45     ` Sergey Senozhatsky
2023-03-24  7:00       ` Namjae Jeon
2023-03-24  5:43 ` Sergey Senozhatsky

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