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exofs: i_nlink races in rename() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-03-02 16:42:38 -05:00
parent 30eb43d314
commit babfe56046
1 changed files with 2 additions and 6 deletions
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8
fs/exofs/namei.c
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@ -272,7 +272,6 @@ static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry,
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 @@ static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry,
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 @@ static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry,
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);