From: Tejun Heo Date: Fri, 10 Jan 2014 13:57:20 +0000 (-0500) Subject: kernfs: remove KERNFS_ACTIVE_REF and add kernfs_lockdep() X-Git-Tag: v3.14-rc1~151^2~31 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a69d001cfc712b96ec9d7ba44d6285702a38dabf;p=pandora-kernel.git kernfs: remove KERNFS_ACTIVE_REF and add kernfs_lockdep() There currently are two mechanisms gating active ref lockdep annotations - KERNFS_LOCKDEP flag and KERNFS_ACTIVE_REF type mask. The former disables lockdep annotations in kernfs_get/put_active() while the latter disables all of kernfs_deactivate(). While KERNFS_ACTIVE_REF also behaves as an optimization to skip the deactivation step for non-file nodes, the benefit is marginal and it needlessly diverges code paths. Let's drop KERNFS_ACTIVE_REF and use KERNFS_LOCKDEP in kernfs_deactivate() too. While at it, add a test helper kernfs_lockdep() to test KERNFS_LOCKDEP flag so that it's more convenient and the related code can be compiled out when not enabled. Signed-off-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed