Tejun Heo 4afddd60a7 kernfs: protect lazy kernfs_iattrs allocation with mutex ... kernfs_iattrs is allocated lazily when operations which require it take place; unfortunately, the lazy allocation and returning weren't properly synchronized and when there are multiple concurrent operations, it might end up returning kernfs_iattrs which hasn't finished initialization yet or different copies to different callers. Fix it by synchronizing with a mutex. This can be smarter with memory barriers but let's go there if it actually turns out to be necessary. Signed-off-by: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/g/533ABA32.9080602@oracle.com Reported-by: Sasha Levin <sasha.levin@oracle.com> Cc: stable@vger.kernel.org # 3.14 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2014-04-16 11:54:40 -07:00
..
dir.c	Merge branch 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2014-04-03 13:05:42 -07:00
file.c	kernfs: cache atomic_write_len in kernfs_open_file	2014-03-08 22:08:29 -08:00
inode.c	kernfs: protect lazy kernfs_iattrs allocation with mutex	2014-04-16 11:54:40 -07:00
Kconfig	kernfs: add CONFIG_KERNFS	2014-02-07 16:08:57 -08:00
kernfs-internal.h	kernfs: fix kernfs_node_from_dentry()	2014-02-14 14:31:37 -08:00
Makefile
mount.c	Merge 3.14-rc5 into driver-core-next	2014-03-02 20:09:08 -08:00
symlink.c	kernfs: remove kernfs_addrm_cxt	2014-02-07 15:42:40 -08:00