From: NeilBrown <neilb@suse.de>
Date: Tue, 22 May 2012 03:55:15 +0000 (+1000)
Subject: md/bitmap: use set_bit, test_bit, etc for operation on bitmap->flags.
X-Git-Tag: v3.5-rc1~110^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b405fe91e50c60c80e72d798025aea4917096421;p=pandora-kernel.git

md/bitmap: use set_bit, test_bit, etc for operation on bitmap->flags.

We currently use '&' and '|' which isn't the norm in the kernel
and doesn't allow easy atomicity.
So change to bit numbers and {set,clear,test}_bit.
This allows us to remove a spinlock/unlock (which was dubious anyway)
and some other simplifications.

Signed-off-by: NeilBrown <neilb@suse.de>
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