From: Jeff Layton <jlayton@redhat.com>
Date: Fri, 21 Jun 2013 12:58:20 +0000 (-0400)
Subject: locks: give the blocked_hash its own spinlock
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~42^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7b2296afb392bc21a50f42e7c7f4b19d3fea8c6d;p=pandora-kernel.git

locks: give the blocked_hash its own spinlock

There's no reason we have to protect the blocked_hash and file_lock_list
with the same spinlock. With the tests I have, breaking it in two gives
a barely measurable performance benefit, but it seems reasonable to make
this locking as granular as possible.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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