tree e5a9a4f215f796ed52d3431353b6eb9a28203a9e
parent 388f7b1d6e8ca06762e2454d28d6c3c55ad0fe95
author Tejun Heo <tj@kernel.org> 1452879014 -0500
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1454905295 -0800

kernfs: make kernfs_walk_ns() use kernfs_pr_cont_buf[]

kernfs_walk_ns() uses a static path_buf[PATH_MAX] to separate out path
components.  Keeping around the 4k buffer just for kernfs_walk_ns() is
wasteful.  This patch makes it piggyback on kernfs_pr_cont_buf[]
instead.  This requires kernfs_walk_ns() to hold kernfs_rename_lock.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>