Failing ->fill_super() will be followed by ->kill_sb(), which should
include kill_litter_super() if the call of simple_fill_super() had
been asked to create anything besides the root dentry. So there's
no need to empty the partially populated tree - it will be trimmed
by inevitable kill_litter_super().
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---
fs/libfs.c | 17 +++++------------
1 file changed, 5 insertions(+), 12 deletions(-)
diff --git a/fs/libfs.c b/fs/libfs.c
index e9440d55073c..6fa8ad36049f 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -912,7 +912,6 @@ int simple_fill_super(struct super_block *s, unsigned long magic,
const struct tree_descr *files)
{
struct inode *inode;
- struct dentry *root;
struct dentry *dentry;
int i;
@@ -935,8 +934,8 @@ int simple_fill_super(struct super_block *s, unsigned long magic,
inode->i_op = &simple_dir_inode_operations;
inode->i_fop = &simple_dir_operations;
set_nlink(inode, 2);
- root = d_make_root(inode);
- if (!root)
+ s->s_root = d_make_root(inode);
+ if (!s->s_root)
return -ENOMEM;
for (i = 0; !files->name || files->name[0]; i++, files++) {
if (!files->name)
@@ -948,13 +947,13 @@ int simple_fill_super(struct super_block *s, unsigned long magic,
"with an index of 1!\n", __func__,
s->s_type->name);
- dentry = d_alloc_name(root, files->name);
+ dentry = d_alloc_name(s->s_root, files->name);
if (!dentry)
- goto out;
+ return -ENOMEM;
inode = new_inode(s);
if (!inode) {
dput(dentry);
- goto out;
+ return -ENOMEM;
}
inode->i_mode = S_IFREG | files->mode;
simple_inode_init_ts(inode);
@@ -962,13 +961,7 @@ int simple_fill_super(struct super_block *s, unsigned long magic,
inode->i_ino = i;
d_add(dentry, inode);
}
- s->s_root = root;
return 0;
-out:
- d_genocide(root);
- shrink_dcache_parent(root);
- dput(root);
- return -ENOMEM;
}
EXPORT_SYMBOL(simple_fill_super);
--
2.39.2
