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Commit adc0e91a authored by Al Viro's avatar Al Viro
Browse files

vfs: new helper - d_make_root() 



d_alloc_root() with iput() in case of allocation failure...

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent b48f03b3

fs/dcache.c

+17 −0
Original line number Original line Diff line number Diff line
@@ -1440,6 +1440,23 @@ struct dentry * d_alloc_root(struct inode * root_inode) 
}

}

EXPORT_SYMBOL(d_alloc_root);

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)

static struct dentry * __d_find_any_alias(struct inode *inode)

{

{

	struct dentry *alias;

	struct dentry *alias;

include/linux/dcache.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -249,6 +249,7 @@ extern int d_invalidate(struct dentry *); 




/* only used at mount-time */

/* only used at mount-time */

extern struct dentry * d_alloc_root(struct inode *);

extern struct dentry * d_alloc_root(struct inode *);

extern struct dentry * d_make_root(struct inode *);





/* <clickety>-<click> the ramfs-type tree */

/* <clickety>-<click> the ramfs-type tree */

extern void d_genocide(struct dentry *);

extern void d_genocide(struct dentry *);