From 5480bcdd60603f834b7c0c252213ca1932c28bfc Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Tue, 21 Dec 2010 13:09:23 +0100 Subject: [PATCH] docs/sysfs: Update directory/kobject documentation. Some time ago the way how sysfs stores a pointer to a kobject corresponding to a directory was modified. This patch brings the documentation again in sync with the implementation. Signed-off-by: Bart Van Assche Cc: Tejun Heo Cc: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- Documentation/filesystems/sysfs.txt | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/Documentation/filesystems/sysfs.txt b/Documentation/filesystems/sysfs.txt index 5d1335faec2d..2ed95f9b770a 100644 --- a/Documentation/filesystems/sysfs.txt +++ b/Documentation/filesystems/sysfs.txt @@ -39,10 +39,12 @@ userspace. Top-level directories in sysfs represent the common ancestors of object hierarchies; i.e. the subsystems the objects belong to. -Sysfs internally stores the kobject that owns the directory in the -->d_fsdata pointer of the directory's dentry. This allows sysfs to do -reference counting directly on the kobject when the file is opened and -closed. +Sysfs internally stores a pointer to the kobject that implements a +directory in the sysfs_dirent object associated with the directory. In +the past this kobject pointer has been used by sysfs to do reference +counting directly on the kobject whenever the file is opened or closed. +With the current sysfs implementation the kobject reference count is +only modified directly by the function sysfs_schedule_callback(). Attributes -- 2.20.1