From 4b8ed67794fe57b23801c65f4ea5b0f0b1f0dbab Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Wed, 3 Aug 2016 11:39:05 +1000 Subject: xfs: add rmap btree operations Originally-From: Dave Chinner Implement the generic btree operations needed to manipulate rmap btree blocks. This is very similar to the per-ag freespace btree implementation, and uses the AGFL for allocation and freeing of blocks. Adapt the rmap btree to store owner offsets within each rmap record, and to handle the primary key being redefined as the tuple [agblk, owner, offset]. The expansion of the primary key is crucial to allowing multiple owners per extent. [darrick: adapt the btree ops to deal with offsets] [darrick: remove init_rec_from_key] [darrick: move unwritten bit to rm_offset] Signed-off-by: Dave Chinner Signed-off-by: Darrick J. Wong Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/xfs/libxfs/xfs_btree.h | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/xfs/libxfs/xfs_btree.h') diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index 573d3a0c5797..9b6d6286466e 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -241,6 +241,7 @@ union xfs_btree_irec { struct xfs_alloc_rec_incore a; struct xfs_bmbt_irec b; struct xfs_inobt_rec_incore i; + struct xfs_rmap_irec r; }; /* -- cgit v1.2.3