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authorAl Viro <viro@zeniv.linux.org.uk>2011-03-02 09:40:21 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2011-03-03 01:28:16 -0500
commit37750cdda36721fa7fa816f5f58258d2c013b248 (patch)
tree0c8f83e9865dc279f00881e71c442c7dfc198104 /fs/ufs
parent4787d45fa76b97e224a8299086bb5fb496275796 (diff)
downloadvexpress-lsk-37750cdda36721fa7fa816f5f58258d2c013b248.tar.gz
ufs: i_nlink races in rename()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ufs')
-rw-r--r--fs/ufs/namei.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index 12f39b9e443..d6f681535eb 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -306,7 +306,6 @@ static int ufs_rename(struct inode *old_dir, struct dentry *old_dentry,
new_de = ufs_find_entry(new_dir, &new_dentry->d_name, &new_page);
if (!new_de)
goto out_dir;
- inode_inc_link_count(old_inode);
ufs_set_link(new_dir, new_de, new_page, old_inode);
new_inode->i_ctime = CURRENT_TIME_SEC;
if (dir_de)
@@ -318,12 +317,9 @@ static int ufs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (new_dir->i_nlink >= UFS_LINK_MAX)
goto out_dir;
}
- inode_inc_link_count(old_inode);
err = ufs_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);
}
@@ -331,12 +327,11 @@ static int ufs_rename(struct inode *old_dir, struct dentry *old_dentry,
/*
* Like most other Unix systems, set the ctime for inodes on a
* rename.
- * inode_dec_link_count() will mark the inode dirty.
*/
old_inode->i_ctime = CURRENT_TIME_SEC;
ufs_delete_entry(old_dir, old_de, old_page);
- inode_dec_link_count(old_inode);
+ mark_inode_dirty(old_inode);
if (dir_de) {
ufs_set_link(old_inode, dir_de, dir_page, new_dir);