[XFS] split up xfs_btree_init_cursor

[~andy/linux] / fs / xfs / xfs_ialloc_btree.c

diff --git a/fs/xfs/xfs_ialloc_btree.c b/fs/xfs/xfs_ialloc_btree.c
index 83502f3edef0d99477e6fb539418950ec9019c9b..8c0c4748a8df4e97ac1aaef8a506fe499df95c3f 100644 (file)
--- a/fs/xfs/xfs_ialloc_btree.c
+++ b/fs/xfs/xfs_ialloc_btree.c
@@ -2076,3 +2076,44 @@ xfs_inobt_update(
        }
        return 0;
 }
+
+STATIC struct xfs_btree_cur *
+xfs_inobt_dup_cursor(
+       struct xfs_btree_cur    *cur)
+{
+       return xfs_inobt_init_cursor(cur->bc_mp, cur->bc_tp,
+                       cur->bc_private.a.agbp, cur->bc_private.a.agno);
+}
+
+static const struct xfs_btree_ops xfs_inobt_ops = {
+       .dup_cursor             = xfs_inobt_dup_cursor,
+};
+
+/*
+ * Allocate a new inode btree cursor.
+ */
+struct xfs_btree_cur *                         /* new inode btree cursor */
+xfs_inobt_init_cursor(
+       struct xfs_mount        *mp,            /* file system mount point */
+       struct xfs_trans        *tp,            /* transaction pointer */
+       struct xfs_buf          *agbp,          /* buffer for agi structure */
+       xfs_agnumber_t          agno)           /* allocation group number */
+{
+       struct xfs_agi          *agi = XFS_BUF_TO_AGI(agbp);
+       struct xfs_btree_cur    *cur;
+
+       cur = kmem_zone_zalloc(xfs_btree_cur_zone, KM_SLEEP);
+
+       cur->bc_tp = tp;
+       cur->bc_mp = mp;
+       cur->bc_nlevels = be32_to_cpu(agi->agi_level);
+       cur->bc_btnum = XFS_BTNUM_INO;
+       cur->bc_blocklog = mp->m_sb.sb_blocklog;
+
+       cur->bc_ops = &xfs_inobt_ops;
+
+       cur->bc_private.a.agbp = agbp;
+       cur->bc_private.a.agno = agno;
+
+       return cur;
+}