[XFS] add get_maxrecs btree operation
Factor xfs_btree_maxrecs into a per-btree operation.
The get_maxrecs method is based on a patch from Dave Chinner.
SGI-PV: 985583
SGI-Modid: xfs-linux-melb:xfs-kern:32188a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index 0647a0e..5398cd0 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -183,6 +183,9 @@
/* cursor operations */
struct xfs_btree_cur *(*dup_cursor)(struct xfs_btree_cur *);
+ /* records in block/level */
+ int (*get_maxrecs)(struct xfs_btree_cur *cur, int level);
+
/* btree tracing */
#ifdef XFS_BTREE_TRACE
void (*trace_enter)(struct xfs_btree_cur *, const char *,