Commit 2d57792a authored by Rong Tao's avatar Rong Tao Committed by Andrew Morton
Browse files

pid: pid_ns_ctl_handler: remove useless comment 

commit 95846ecf("pid: replace pid bitmap implementation with IDR API")
removes 'last_pid' element, and use the idr_get_cursor-idr_set_cursor pair
to set the value of idr, so useless comments should be removed.

Link: https://lkml.kernel.org/r/tencent_157A2A1CAF19A3F5885F0687426159A19708@qq.com


Signed-off-by: default avatarRong Tao <rongtao@cestc.cn>
Cc: Aleksa Sarai <cyphar@cyphar.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Jeff Xu <jeffxu@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 5e57418a

kernel/pid_namespace.c

+0 −6
Original line number Diff line number Diff line
@@ -286,12 +286,6 @@ static int pid_ns_ctl_handler(struct ctl_table *table, int write, 
	if (write && !checkpoint_restore_ns_capable(pid_ns->user_ns))

		return -EPERM;



	/*

	 * Writing directly to ns' last_pid field is OK, since this field

	 * is volatile in a living namespace anyway and a code writing to

	 * it should synchronize its usage with external means.

	 */



	next = idr_get_cursor(&pid_ns->idr) - 1;



	tmp.data = &next;