提交 adc0e91a 编写于 作者: A Al Viro

vfs: new helper - d_make_root()

d_alloc_root() with iput() in case of allocation failure...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
上级 b48f03b3
......@@ -1440,6 +1440,23 @@ struct dentry * d_alloc_root(struct inode * root_inode)
}
EXPORT_SYMBOL(d_alloc_root);
struct dentry *d_make_root(struct inode *root_inode)
{
struct dentry *res = NULL;
if (root_inode) {
static const struct qstr name = { .name = "/", .len = 1 };
res = __d_alloc(root_inode->i_sb, &name);
if (res)
d_instantiate(res, root_inode);
else
iput(root_inode);
}
return res;
}
EXPORT_SYMBOL(d_make_root);
static struct dentry * __d_find_any_alias(struct inode *inode)
{
struct dentry *alias;
......
......@@ -249,6 +249,7 @@ extern int d_invalidate(struct dentry *);
/* only used at mount-time */
extern struct dentry * d_alloc_root(struct inode *);
extern struct dentry * d_make_root(struct inode *);
/* <clickety>-<click> the ramfs-type tree */
extern void d_genocide(struct dentry *);
......
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