From: Patrick McHardy <kaber@trash.net>
Date: Wed, 17 Apr 2013 06:47:05 +0000 (+0000)
Subject: netlink: add flow control for memory mapped I/O
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~65^2~88^2~4
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cd1df525da59c64244d27b4548ff5d132489488a;p=pandora-kernel.git

netlink: add flow control for memory mapped I/O

Add flow control for memory mapped RX. Since user-space usually doesn't
invoke recvmsg() when using memory mapped I/O, flow control is performed
in netlink_poll(). Dumps are allowed to continue if at least half of the
ring frames are unused.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

Reading git-diff-tree failed