From: Milan Broz <mbroz@redhat.com>
Date: Thu, 13 Jan 2011 19:59:48 +0000 (+0000)
Subject: dm: remove dm_mutex after bkl conversion
X-Git-Tag: v2.6.38-rc1~221^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4a1aeb98297e17f4e0a8cdda919e63bf528b2e5d;p=pandora-kernel.git

dm: remove dm_mutex after bkl conversion

This patch replaces dm_mutex with _minor_lock in dm_blk_close()
and then removes it.

During the BKL conversion, commit 6e9624b8caec290d28b4c6d9ec75749df6372b87
(block: push down BKL into .open and .release) pushed lock_kernel()
down into dm_blk_open/close calls.
Commit 2a48fc0ab24241755dc93bfd4f01d68efab47f5a
(block: autoconvert trivial BKL users to private mutex) converted it to a
local mutex, but _minor_lock is sufficient.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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