exofs: i_nlink races in rename()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/exofs/namei.c b/fs/exofs/namei.c
index 264e95d..4d70db1 100644
--- a/fs/exofs/namei.c
+++ b/fs/exofs/namei.c
@@ -272,7 +272,6 @@
new_de = exofs_find_entry(new_dir, new_dentry, &new_page);
if (!new_de)
goto out_dir;
- inode_inc_link_count(old_inode);
err = exofs_set_link(new_dir, new_de, new_page, old_inode);
new_inode->i_ctime = CURRENT_TIME;
if (dir_de)
@@ -286,12 +285,9 @@
if (new_dir->i_nlink >= EXOFS_LINK_MAX)
goto out_dir;
}
- inode_inc_link_count(old_inode);
err = exofs_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);
}
@@ -299,7 +295,7 @@
old_inode->i_ctime = CURRENT_TIME;
exofs_delete_entry(old_de, old_page);
- inode_dec_link_count(old_inode);
+ mark_inode_dirty(old_inode);
if (dir_de) {
err = exofs_set_link(old_inode, dir_de, dir_page, new_dir);