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openpromfs: don't do unlock_new_inode() until the new inode is set up

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2021-02-09 23:47:49 -05:00
parent a612c07dd2
commit e34d657fc5
1 changed files with 32 additions and 33 deletions
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25
fs/openpromfs/inode.c
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@@ -236,6 +236,8 @@ found:
mutex_unlock(&op_mutex); mutex_unlock(&op_mutex);
if (IS_ERR(inode)) if (IS_ERR(inode))
return ERR_CAST(inode); return ERR_CAST(inode);
if (inode->i_state & I_NEW) {
inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
ent_oi = OP_I(inode); ent_oi = OP_I(inode);
ent_oi->type = ent_type; ent_oi->type = ent_type;
ent_oi->u = ent_data; ent_oi->u = ent_data;
@@ -258,6 +260,8 @@ found:
inode->i_size = ent_oi->u.prop->length; inode->i_size = ent_oi->u.prop->length;
break; break;
} }
unlock_new_inode(inode);
}
return d_splice_alias(inode, dentry); return d_splice_alias(inode, dentry);
} }
@@ -345,20 +349,9 @@ static void openprom_free_inode(struct inode *inode)
static struct inode *openprom_iget(struct super_block *sb, ino_t ino) static struct inode *openprom_iget(struct super_block *sb, ino_t ino)
{ {
struct inode *inode; struct inode *inode = iget_locked(sb, ino);
inode = iget_locked(sb, ino);
if (!inode) if (!inode)
return ERR_PTR(-ENOMEM); inode = ERR_PTR(-ENOMEM);
if (inode->i_state & I_NEW) {
inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
if (inode->i_ino == OPENPROM_ROOT_INO) {
inode->i_op = &openprom_inode_operations;
inode->i_fop = &openprom_operations;
inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
}
unlock_new_inode(inode);
}
return inode; return inode;
} }
@@ -394,9 +387,15 @@ static int openprom_fill_super(struct super_block *s, struct fs_context *fc)
goto out_no_root; goto out_no_root;
} }
root_inode->i_mtime = root_inode->i_atime =
root_inode->i_ctime = current_time(root_inode);
root_inode->i_op = &openprom_inode_operations;
root_inode->i_fop = &openprom_operations;
root_inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
oi = OP_I(root_inode); oi = OP_I(root_inode);
oi->type = op_inode_node; oi->type = op_inode_node;
oi->u.node = of_find_node_by_path("/"); oi->u.node = of_find_node_by_path("/");
unlock_new_inode(root_inode);
s->s_root = d_make_root(root_inode); s->s_root = d_make_root(root_inode);
if (!s->s_root) if (!s->s_root)