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Message-Id: <20240604-jag-sysctl_remset-v1-5-2df7ecdba0bd@samsung.com>
Date: Tue, 04 Jun 2024 08:29:23 +0200
From: Joel Granados via B4 Relay <devnull+j.granados.samsung.com@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
Will Deacon <will@...nel.org>, Waiman Long <longman@...hat.com>,
Boqun Feng <boqun.feng@...il.com>, Suren Baghdasaryan <surenb@...gle.com>,
Kent Overstreet <kent.overstreet@...ux.dev>,
Andrew Morton <akpm@...ux-foundation.org>,
Luis Chamberlain <mcgrof@...nel.org>, Kees Cook <keescook@...omium.org>,
Joel Granados <j.granados@...sung.com>,
"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
linux-fsdevel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 5/8] sysctl: Remove superfluous empty allocations from
sysctl internals
From: Joel Granados <j.granados@...sung.com>
Now that the sentinels have been removed from ctl_table arrays, there is
no need to artificially append empty ctl_table elements at ctl_table
registration. Remove superfluous empty allocation from new_dir and
new_links.
Signed-off-by: Joel Granados <j.granados@...sung.com>
---
fs/proc/proc_sysctl.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 1babb54347a4..29d40f0ff3ff 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -951,14 +951,14 @@ static struct ctl_dir *new_dir(struct ctl_table_set *set,
char *new_name;
new = kzalloc(sizeof(*new) + sizeof(struct ctl_node) +
- sizeof(struct ctl_table)*2 + namelen + 1,
+ sizeof(struct ctl_table) + namelen + 1,
GFP_KERNEL);
if (!new)
return NULL;
node = (struct ctl_node *)(new + 1);
table = (struct ctl_table *)(node + 1);
- new_name = (char *)(table + 2);
+ new_name = (char *)(table + 1);
memcpy(new_name, name, namelen);
table[0].procname = new_name;
table[0].mode = S_IFDIR|S_IRUGO|S_IXUGO;
@@ -1163,7 +1163,7 @@ static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table_
links = kzalloc(sizeof(struct ctl_table_header) +
sizeof(struct ctl_node)*head->ctl_table_size +
- sizeof(struct ctl_table)*(head->ctl_table_size + 1) +
+ sizeof(struct ctl_table)*head->ctl_table_size +
name_bytes,
GFP_KERNEL);
@@ -1172,7 +1172,7 @@ static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table_
node = (struct ctl_node *)(links + 1);
link_table = (struct ctl_table *)(node + head->ctl_table_size);
- link_name = (char *)&link_table[head->ctl_table_size + 1];
+ link_name = (char *)(link_table + head->ctl_table_size);
link = link_table;
list_for_each_table_entry(entry, head) {
--
2.43.0
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