From: Alexey Dobriyan <adobriyan@gmail.com>
To: kaber@trash.net
Cc: netfilter-devel@vger.kernel.org
Subject: [PATCH] ipt_CLUSTERIP: simplify seq_file code
Date: Fri, 22 Jan 2010 22:19:57 +0200 [thread overview]
Message-ID: <20100122201957.GE22342@x200> (raw)
Pass "struct clusterip_config" itself to seq_file iterators
and save one dereference. Proc entry itself isn't interesting.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
net/ipv4/netfilter/ipt_CLUSTERIP.c | 14 +++++---------
1 file changed, 5 insertions(+), 9 deletions(-)
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -560,8 +560,7 @@ struct clusterip_seq_position {
static void *clusterip_seq_start(struct seq_file *s, loff_t *pos)
{
- const struct proc_dir_entry *pde = s->private;
- struct clusterip_config *c = pde->data;
+ struct clusterip_config *c = s->private;
unsigned int weight;
u_int32_t local_nodes;
struct clusterip_seq_position *idx;
@@ -632,10 +631,9 @@ static int clusterip_proc_open(struct inode *inode, struct file *file)
if (!ret) {
struct seq_file *sf = file->private_data;
- struct proc_dir_entry *pde = PDE(inode);
- struct clusterip_config *c = pde->data;
+ struct clusterip_config *c = PDE(inode)->data;
- sf->private = pde;
+ sf->private = c;
clusterip_config_get(c);
}
@@ -645,8 +643,7 @@ static int clusterip_proc_open(struct inode *inode, struct file *file)
static int clusterip_proc_release(struct inode *inode, struct file *file)
{
- struct proc_dir_entry *pde = PDE(inode);
- struct clusterip_config *c = pde->data;
+ struct clusterip_config *c = PDE(inode)->data;
int ret;
ret = seq_release(inode, file);
@@ -660,10 +657,9 @@ static int clusterip_proc_release(struct inode *inode, struct file *file)
static ssize_t clusterip_proc_write(struct file *file, const char __user *input,
size_t size, loff_t *ofs)
{
+ struct clusterip_config *c = PDE(file->f_path.dentry->d_inode)->data;
#define PROC_WRITELEN 10
char buffer[PROC_WRITELEN+1];
- const struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
- struct clusterip_config *c = pde->data;
unsigned long nodenum;
if (copy_from_user(buffer, input, PROC_WRITELEN))
next reply other threads:[~2010-01-22 20:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-22 20:19 Alexey Dobriyan [this message]
2010-01-22 21:22 ` [PATCH] ipt_CLUSTERIP: simplify seq_file code Patrick McHardy
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