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Subject[PATCH] Remove some pointless conditionals before kfree() in kernel/cgroup.c
Hi,

Here's a small patch for kernel/cgroup.c

Removes a few pointless tests of pointer == 0 before kfree() in
kernel/cgroup.c.
If the pointer we hand to kfree() is 0, then kfree() is a noop, so there
is no need to test.

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

and source file size shrinks a bit too - always nice.


Signed-off-by: Jesper Juhl <jj@chaosbits.net>
---

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 9edb5c4..1c0a9b5 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -865,8 +865,7 @@ 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;
@@ -969,15 +968,13 @@ 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;
}


--
Jesper Juhl <jj@chaosbits.net> http://www.chaosbits.net/
Plain text mails only, please http://www.expita.com/nomime.html
Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html



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