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From: wangyufen <wangyufen@huawei.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: <netdev@vger.kernel.org>
Subject: Issue with /proc/sys/net/ipv4/tcp_mem
Date: Mon, 12 Oct 2015 17:38:32 +0800	[thread overview]
Message-ID: <561B7F98.1040809@huawei.com> (raw)

Hi,

I tried on linux-4.1:
    linux:~# cat /proc/sys/net/ipv4/tcp_mem 
    8388608	12582912	16777216
    linux:~# echo 1234 >/proc/sys/net/ipv4/tcp_mem 
    -bash: echo: write error: Invalid argument
    linux:~# cat /proc/sys/net/ipv4/tcp_mem 
    1234	12582912	16777216

the echo operation got error, but value already written to tcp_mem.

I checked, patch f594d63199688ad568fb caused the issue.


thanks,
Wang

             reply	other threads:[~2015-10-12  9:40 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-12  9:38 wangyufen [this message]
2015-10-12 15:24 ` Issue with /proc/sys/net/ipv4/tcp_mem Eric W. Biederman
2015-10-12 16:37 ` Eric W. Biederman
2015-10-13  1:44   ` Eric Dumazet
2015-10-13  5:07     ` Eric W. Biederman
2015-11-28  8:13       ` wangyufen

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