From: Mike Snitzer <snitzer@redhat.com>
Date: Mon, 22 Jun 2009 09:12:32 +0000 (+0100)
Subject: dm table: establish queue limits by copying table limits
X-Git-Tag: v2.6.31-rc1~8^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1197764e403d97231eb6da2b1e16f511a7fd3101;p=pandora-kernel.git

dm table: establish queue limits by copying table limits

Copy the table's queue_limits to the DM device's request_queue.  This
properly initializes the queue's topology limits and also avoids having
to track the evolution of 'struct queue_limits' in
dm_table_set_restrictions()

Also fixes a bug that was introduced in dm_table_set_restrictions() via
commit ae03bf639a5027d27270123f5f6e3ee6a412781d.  In addition to
establishing 'bounce_pfn' in the queue's limits blk_queue_bounce_limit()
also performs an allocation to setup the ISA DMA pool.  This allocation
resulted in "sleeping function called from invalid context" when called
from dm_table_set_restrictions().

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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