procfs: switch instantiate_t to d_splice_alias()
... and get rid of pointless struct inode *dir argument of those,
while we are at it.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c
index ad1adce..dd2b35f 100644
--- a/fs/proc/namespaces.c
+++ b/fs/proc/namespaces.c
@@ -87,16 +87,16 @@
.setattr = proc_setattr,
};
-static int proc_ns_instantiate(struct inode *dir,
- struct dentry *dentry, struct task_struct *task, const void *ptr)
+static struct dentry *proc_ns_instantiate(struct dentry *dentry,
+ struct task_struct *task, const void *ptr)
{
const struct proc_ns_operations *ns_ops = ptr;
struct inode *inode;
struct proc_inode *ei;
- inode = proc_pid_make_inode(dir->i_sb, task, S_IFLNK | S_IRWXUGO);
+ inode = proc_pid_make_inode(dentry->d_sb, task, S_IFLNK | S_IRWXUGO);
if (!inode)
- return -ENOENT;
+ return ERR_PTR(-ENOENT);
ei = PROC_I(inode);
inode->i_op = &proc_ns_link_inode_operations;
@@ -104,8 +104,7 @@
pid_update_inode(task, inode);
d_set_d_op(dentry, &pid_dentry_operations);
- d_add(dentry, inode);
- return 0;
+ return d_splice_alias(inode, dentry);
}
static int proc_ns_dir_readdir(struct file *file, struct dir_context *ctx)
@@ -144,12 +143,10 @@
static struct dentry *proc_ns_dir_lookup(struct inode *dir,
struct dentry *dentry, unsigned int flags)
{
- int error;
struct task_struct *task = get_proc_task(dir);
const struct proc_ns_operations **entry, **last;
unsigned int len = dentry->d_name.len;
-
- error = -ENOENT;
+ struct dentry *res = ERR_PTR(-ENOENT);
if (!task)
goto out_no_task;
@@ -164,11 +161,11 @@
if (entry == last)
goto out;
- error = proc_ns_instantiate(dir, dentry, task, *entry);
+ res = proc_ns_instantiate(dentry, task, *entry);
out:
put_task_struct(task);
out_no_task:
- return ERR_PTR(error);
+ return res;
}
const struct inode_operations proc_ns_dir_inode_operations = {