From 99fc06df72fe1c9ad3ec274720dcb5658c40bfd2 Mon Sep 17 00:00:00 2001
From: Changli Gao <xiaosuo@gmail.com>
Date: Sun, 15 Jul 2007 23:40:09 -0700
Subject: [PATCH] procfs directory entry cleanup
Function proc_register() will assign proc_dir_operations and
proc_dir_inode_operations to ent's members proc_fops and proc_iops
correctly if ent is a directory. So the early assignment isn't
necessary.
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
fs/proc/generic.c | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 4f8e53568b22..b5e7155d30d8 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -530,12 +530,6 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp
return -EAGAIN;
dp->low_ino = i;
- spin_lock(&proc_subdir_lock);
- dp->next = dir->subdir;
- dp->parent = dir;
- dir->subdir = dp;
- spin_unlock(&proc_subdir_lock);
-
if (S_ISDIR(dp->mode)) {
if (dp->proc_iops == NULL) {
dp->proc_fops = &proc_dir_operations;
@@ -551,6 +545,13 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp
if (dp->proc_iops == NULL)
dp->proc_iops = &proc_file_inode_operations;
}
+
+ spin_lock(&proc_subdir_lock);
+ dp->next = dir->subdir;
+ dp->parent = dir;
+ dir->subdir = dp;
+ spin_unlock(&proc_subdir_lock);
+
return 0;
}
@@ -653,9 +654,6 @@ struct proc_dir_entry *proc_mkdir_mode(const char *name, mode_t mode,
ent = proc_create(&parent, name, S_IFDIR | mode, 2);
if (ent) {
- ent->proc_fops = &proc_dir_operations;
- ent->proc_iops = &proc_dir_inode_operations;
-
if (proc_register(parent, ent) < 0) {
kfree(ent);
ent = NULL;
@@ -690,10 +688,6 @@ struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
ent = proc_create(&parent,name,mode,nlink);
if (ent) {
- if (S_ISDIR(mode)) {
- ent->proc_fops = &proc_dir_operations;
- ent->proc_iops = &proc_dir_inode_operations;
- }
if (proc_register(parent, ent) < 0) {
kfree(ent);
ent = NULL;
--
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