From: Catalin Marinas <catalin.marinas@arm.com>
Date: Tue, 7 Jul 2009 09:32:58 +0000 (+0100)
Subject: kmemleak: Do not acquire scan_mutex in kmemleak_open()
X-Git-Tag: v2.6.31-rc3~8^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b87324d082d9d898e3c06b2a07a2b94b2430b8ba;p=pandora-kernel.git

kmemleak: Do not acquire scan_mutex in kmemleak_open()

Initially, the scan_mutex was acquired in kmemleak_open() and released
in kmemleak_release() (corresponding to /sys/kernel/debug/kmemleak
operations). This was causing some lockdep reports when the file was
closed from a different task than the one opening it. This patch moves
the scan_mutex acquiring in kmemleak_write() or kmemleak_seq_start()
with releasing in kmemleak_seq_stop().

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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