ocfs2: Add a validation hook for quota block reads.

Add a currently-returns-success hook for quota block reads.  We'll be
adding checks to this.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

diff --git a/fs/ocfs2/quota_global.c b/fs/ocfs2/quota_global.c
index a10faebe88a1ef3cfbaca8c9a5b816ade6fa382f..7dbcfd7f65e611e065a9b7e06e6d566582f8814c 100644 (file)
--- a/fs/ocfs2/quota_global.c
+++ b/fs/ocfs2/quota_global.c
@@ -87,13 +87,25 @@ struct qtree_fmt_operations ocfs2_global_ops = {
        .is_id = ocfs2_global_is_id,
 };
 
+static int ocfs2_validate_quota_block(struct super_block *sb,
+                                     struct buffer_head *bh)
+{
+       struct ocfs2_disk_dqtrailer *dqt = ocfs2_dq_trailer(sb, bh->b_data);
+
+       mlog(0, "Validating quota block %llu\n",
+            (unsigned long long)bh->b_blocknr);
+
+       return 0;
+}
+
 int ocfs2_read_quota_block(struct inode *inode, u64 v_block,
                           struct buffer_head **bh)
 {
        int rc = 0;
        struct buffer_head *tmp = *bh;
 
-       rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0, NULL);
+       rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0,
+                                   ocfs2_validate_quota_block);
        if (rc)
                mlog_errno(rc);