linux/fs/sysfs
Al Viro a685e08987 Delay struct net freeing while there's a sysfs instance refering to it
* new refcount in struct net, controlling actual freeing of the memory
	* new method in kobj_ns_type_operations (->drop_ns())
	* ->current_ns() semantics change - it's supposed to be followed by
corresponding ->drop_ns().  For struct net in case of CONFIG_NET_NS it bumps
the new refcount; net_drop_ns() decrements it and calls net_free() if the
last reference has been dropped.  Method renamed to ->grab_current_ns().
	* old net_free() callers call net_drop_ns() instead.
	* sysfs_exit_ns() is gone, along with a large part of callchain
leading to it; now that the references stored in ->ns[...] stay valid we
do not need to hunt them down and replace them with NULL.  That fixes
problems in sysfs_lookup() and sysfs_readdir(), along with getting rid
of sb->s_instances abuse.

	Note that struct net *shutdown* logics has not changed - net_cleanup()
is called exactly when it used to be called.  The only thing postponed by
having a sysfs instance refering to that struct net is actual freeing of
memory occupied by struct net.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-12 17:45:41 -04:00
..
Kconfig kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bin.c sysfs: only access bin file vm_ops with the active lock 2010-10-22 10:16:43 -07:00
dir.c fs: rcu-walk aware d_revalidate method 2011-01-07 17:50:29 +11:00
file.c sysfs: remove "last sysfs file:" line from the oops messages 2011-05-13 16:05:51 -07:00
group.c SYSFS: Fix erroneous comments for sysfs_update_group(). 2011-05-10 14:22:00 -07:00
inode.c headers: kobject.h redux 2011-01-10 08:51:44 -08:00
mount.c Delay struct net freeing while there's a sysfs instance refering to it 2011-06-12 17:45:41 -04:00
symlink.c sysfs: allow creating symlinks from untagged to tagged directories 2010-07-26 12:02:41 -07:00
sysfs.h Delay struct net freeing while there's a sysfs instance refering to it 2011-06-12 17:45:41 -04:00