minix: i_nlink races in rename()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index ce7337d..6e6777f 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -213,7 +213,6 @@
new_de = minix_find_entry(new_dentry, &new_page);
if (!new_de)
goto out_dir;
- inode_inc_link_count(old_inode);
minix_set_link(new_de, new_page, old_inode);
new_inode->i_ctime = CURRENT_TIME_SEC;
if (dir_de)
@@ -225,18 +224,15 @@
if (new_dir->i_nlink >= info->s_link_max)
goto out_dir;
}
- inode_inc_link_count(old_inode);
err = minix_add_link(new_dentry, old_inode);
- if (err) {
- inode_dec_link_count(old_inode);
+ if (err)
goto out_dir;
- }
if (dir_de)
inode_inc_link_count(new_dir);
}
minix_delete_entry(old_de, old_page);
- inode_dec_link_count(old_inode);
+ mark_inode_dirty(old_inode);
if (dir_de) {
minix_set_link(dir_de, dir_page, new_dir);