tree 23183d749d3267e3c3636fdc78e10ceb0cd10b1a
parent 288c857d66a400ca4846dd700eb1c4820d738bb9
author Catalin Marinas <catalin.marinas@arm.com> 1246959178 +0100
committer Catalin Marinas <catalin.marinas@arm.com> 1247059513 +0100

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>