From: Dexuan Cui <decui@microsoft.com>
Date: Thu, 20 Nov 2014 05:51:22 +0000 (-0800)
Subject: tools: hv: ignore ENOBUFS and ENOMEM in the KVP daemon
X-Git-Tag: omap-for-v3.20/drop-legacy-3517~81^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4300f26492b2438c4c1930552dfe83cb09c0ab31;p=pandora-kernel.git

tools: hv: ignore ENOBUFS and ENOMEM in the KVP daemon

Under high memory pressure and very high KVP R/W test pressure, the netlink
recvfrom() may transiently return ENOBUFS to the daemon -- we found this
during a 2-week stress test.

We'd better not terminate the daemon on the failure, because a typical KVP
user will re-try the R/W and hopefully it will succeed next time.

We can also ignore the errors on sending.

Cc: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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