From: David S. Miller <davem@davemloft.net>
Date: Tue, 24 Jan 2012 22:03:44 +0000 (-0500)
Subject: rds: Make rds_sock_lock BH rather than IRQ safe.
X-Git-Tag: v3.3-rc2~37^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=efc3dbc37412c027e363736b4f4c74ee5e8ecffc;p=pandora-kernel.git

rds: Make rds_sock_lock BH rather than IRQ safe.

rds_sock_info() triggers locking warnings because we try to perform a
local_bh_enable() (via sock_i_ino()) while hardware interrupts are
disabled (via taking rds_sock_lock).

There is no reason for rds_sock_lock to be a hardware IRQ disabling
lock, none of these access paths run in hardware interrupt context.

Therefore making it a BH disabling lock is safe and sufficient to
fix this bug.

Reported-by: Kumar Sanghvi <kumaras@chelsio.com>
Reported-by: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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