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| author | Rong Tao <rongtao@cestc.cn> | 2023-09-11 16:55:09 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-10-04 19:41:57 +0200 |
| commit | 2d57792a39e5473c5d98fc0138c4e9ab9c98a57b (patch) | |
| tree | 8a6727eef779a2e3dcaee62a567e48ff33898629 /kernel/pid_namespace.c | |
| parent | minmax: deduplicate __unconst_integer_typeof() (diff) | |
| download | linux-2d57792a39e5473c5d98fc0138c4e9ab9c98a57b.tar.xz linux-2d57792a39e5473c5d98fc0138c4e9ab9c98a57b.zip | |
pid: pid_ns_ctl_handler: remove useless comment
commit 95846ecf9dac("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: Rong 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: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel/pid_namespace.c')
| -rw-r--r-- | kernel/pid_namespace.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 619972c78774..3028b2218aa4 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -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; |