From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Fri, 30 Dec 2022 09:36:02 +0000 (+0300)
Subject: proc: mark /proc/cmdline as permanent
X-Git-Tag: v6.3-rc1~112^2~42
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a61c01e8f4a5c80e90de80a7fb147101b20afd85;p=thirdparty%2Flinux.git

proc: mark /proc/cmdline as permanent

/proc/cmdline is never removed, mark is as permanent for slightly faster
open and close.

Link: https://lkml.kernel.org/r/Y66xAveh2yUsP7m9@p183
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/fs/proc/cmdline.c b/fs/proc/cmdline.c
index 91fe1597af7b4..a6f76121955f6 100644
--- a/fs/proc/cmdline.c
+++ b/fs/proc/cmdline.c
@@ -17,6 +17,7 @@ static int __init proc_cmdline_init(void)
 	struct proc_dir_entry *pde;
 
 	pde = proc_create_single("cmdline", 0, NULL, cmdline_proc_show);
+	pde_make_permanent(pde);
 	pde->size = saved_command_line_len + 1;
 	return 0;
 }