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gut proc_register() a bit 

There are only 3 callers and quite a bit of that thing is executed
exactly in one of those.  Just lift it there...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-12-25 16:47:49 -05:00
parent d6cb125b99
commit d443b9fd56
1 changed files with 8 additions and 17 deletions
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25
fs/proc/generic.c
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@ -350,29 +350,12 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp
if (ret)
return ret;
if (S_ISDIR(dp->mode)) {
dp->proc_fops = &proc_dir_operations;
dp->proc_iops = &proc_dir_inode_operations;
dir->nlink++;
} else if (S_ISLNK(dp->mode)) {
dp->proc_iops = &proc_link_inode_operations;
} else if (S_ISREG(dp->mode)) {
BUG_ON(dp->proc_fops == NULL);
dp->proc_iops = &proc_file_inode_operations;
} else {
WARN_ON(1);
proc_free_inum(dp->low_ino);
return -EINVAL;
}
spin_lock(&proc_subdir_lock);
dp->parent = dir;
if (pde_subdir_insert(dir, dp) == false) {
WARN(1, "proc_dir_entry '%s/%s' already registered\n",
dir->name, dp->name);
spin_unlock(&proc_subdir_lock);
if (S_ISDIR(dp->mode))
dir->nlink--;
proc_free_inum(dp->low_ino);
return -EEXIST;
}
@ -431,6 +414,7 @@ struct proc_dir_entry *proc_symlink(const char *name,
ent->data = kmalloc((ent->size=strlen(dest))+1, GFP_KERNEL);
if (ent->data) {
strcpy((char*)ent->data,dest);
ent->proc_iops = &proc_link_inode_operations;
if (proc_register(parent, ent) < 0) {
kfree(ent->data);
kfree(ent);
@ -456,8 +440,12 @@ struct proc_dir_entry *proc_mkdir_data(const char *name, umode_t mode,
ent = __proc_create(&parent, name, S_IFDIR | mode, 2);
if (ent) {
ent->data = data;
ent->proc_fops = &proc_dir_operations;
ent->proc_iops = &proc_dir_inode_operations;
parent->nlink++;
if (proc_register(parent, ent) < 0) {
kfree(ent);
parent->nlink--;
ent = NULL;
}
}
@ -493,6 +481,8 @@ struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
return NULL;
}
BUG_ON(proc_fops == NULL);
if ((mode & S_IALLUGO) == 0)
mode |= S_IRUGO;
pde = __proc_create(&parent, name, mode, 1);
@ -500,6 +490,7 @@ struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
goto out;
pde->proc_fops = proc_fops;
pde->data = data;
pde->proc_iops = &proc_file_inode_operations;
if (proc_register(parent, pde) < 0)
goto out_free;
return pde;