From: NeilBrown <neilb@suse.de>
Date: Wed, 21 Sep 2011 05:37:46 +0000 (+1000)
Subject: md/bitmap: rename and tidy up BITMAP_PAGE_CLEAN
X-Git-Tag: v3.2-rc1~154^2~33
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a537df44d52331a3d2792ca21a296959bd2ac3a;p=pandora-kernel.git

md/bitmap: rename and tidy up BITMAP_PAGE_CLEAN

The flag 'BITMAP_PAGE_CLEAN' has a confusing name as it doesn't mean
that the page is clean, but rather that there are counters in the page
which allow bits in the bitmap to be cleared - i.e. maybe cleaning can
happen.

So change it to BITMAP_PAGE_PENDING and fix some irregularities:
 - Don't set it in bitmap_init_from_disk as bitmap_set_memory_bits
   sets it when needed
 - in bitmap_daemon_work, if we find a counter that is '1', but
   need_sync is set, then set BITMAP_PAGE_PENDING again (it was
   recently cleared) to ensure we don't forget about this bit.

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