Commit 87e0aab3 authored by Maxim Patlasov's avatar Maxim Patlasov Committed by Al Viro

proc: avoid extra pde_put() in proc_fill_super()

If proc_get_inode() succeeded, but d_make_root() failed, pde_put() for
proc_root will be called twice: the first time due to iput() called from
d_make_root() and the second time directly in the end of
proc_fill_super().
Signed-off-by: default avatarMaxim Patlasov <mpatlasov@parallels.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 41735818
......@@ -486,6 +486,8 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
int proc_fill_super(struct super_block *s)
{
struct inode *root_inode;
s->s_flags |= MS_NODIRATIME | MS_NOSUID | MS_NOEXEC;
s->s_blocksize = 1024;
s->s_blocksize_bits = 10;
......@@ -494,11 +496,18 @@ int proc_fill_super(struct super_block *s)
s->s_time_gran = 1;
pde_get(&proc_root);
s->s_root = d_make_root(proc_get_inode(s, &proc_root));
if (s->s_root)
return 0;
root_inode = proc_get_inode(s, &proc_root);
if (!root_inode) {
printk(KERN_ERR "proc_fill_super: get root inode failed\n");
pde_put(&proc_root);
return -ENOMEM;
}
printk("proc_read_super: get root inode failed\n");
pde_put(&proc_root);
return -ENOMEM;
s->s_root = d_make_root(root_inode);
if (!s->s_root) {
printk(KERN_ERR "proc_fill_super: allocate dentry failed\n");
return -ENOMEM;
}
return 0;
}
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