From 66bdc9cfc77ba89a9ee6c82d28375b646ab4bb1d Mon Sep 17 00:00:00 2001
From: Jesper Juhl <jj@chaosbits.net>
Date: Thu, 2 Apr 2009 16:57:27 -0700
Subject: [PATCH] kernel/cgroup.c: kfree(NULL) is legal
Reduces object file size a bit:
Before:
$ size kernel/cgroup.o
text data bss dec hex filename
21593 7804 4924 34321 8611 kernel/cgroup.o
After:
$ size kernel/cgroup.o
text data bss dec hex filename
21537 7744 4924 34205 859d kernel/cgroup.o
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
kernel/cgroup.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index fc5e4a48582f..9a6c2bfa1d9f 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -923,8 +923,7 @@ static int cgroup_remount(struct super_block *sb, int *flags, char *data)
if (opts.release_agent)
strcpy(root->release_agent_path, opts.release_agent);
out_unlock:
- if (opts.release_agent)
- kfree(opts.release_agent);
+ kfree(opts.release_agent);
mutex_unlock(&cgroup_mutex);
mutex_unlock(&cgrp->dentry->d_inode->i_mutex);
return ret;
@@ -1027,15 +1026,13 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
/* First find the desired set of subsystems */
ret = parse_cgroupfs_options(data, &opts);
if (ret) {
- if (opts.release_agent)
- kfree(opts.release_agent);
+ kfree(opts.release_agent);
return ret;
}
root = kzalloc(sizeof(*root), GFP_KERNEL);
if (!root) {
- if (opts.release_agent)
- kfree(opts.release_agent);
+ kfree(opts.release_agent);
return -ENOMEM;
}
--
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