quota: Fix dquot_transfer for filesystems different from ext4

[net-next-2.6.git] / fs / quota / dquot.c

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index dea86abdf2e7fe8ca6589dc0ba22210357a28d01..3fc62b097bedac541f2ada3309932b0953f8bbda 100644 (file)
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1377,6 +1377,9 @@ static void inode_sub_rsv_space(struct inode *inode, qsize_t number)
 static qsize_t inode_get_rsv_space(struct inode *inode)
 {
        qsize_t ret;
+
+       if (!inode->i_sb->dq_op->get_reserved_space)
+               return 0;
        spin_lock(&inode->i_lock);
        ret = *inode_reserved_space(inode);
        spin_unlock(&inode->i_lock);