xfs: add shared rmap map/unmap/convert log item types

Wire up some rmap log redo item type codes to map, unmap, or convert
shared data block extents.  The actual log item recovery comes in a
later patch.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

3 files changed, 15 insertions, 0 deletions

diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h
index 364ce6fcc213..083cdd6d6c28 100644
--- a/fs/xfs/libxfs/xfs_log_format.h
+++ b/fs/xfs/libxfs/xfs_log_format.h
@@ -635,8 +635,11 @@ struct xfs_map_extent {
 
 /* rmap me_flags: upper bits are flags, lower byte is type code */
 #define XFS_RMAP_EXTENT_MAP             1
+#define XFS_RMAP_EXTENT_MAP_SHARED      2
 #define XFS_RMAP_EXTENT_UNMAP           3
+#define XFS_RMAP_EXTENT_UNMAP_SHARED    4
 #define XFS_RMAP_EXTENT_CONVERT         5
+#define XFS_RMAP_EXTENT_CONVERT_SHARED  6
 #define XFS_RMAP_EXTENT_ALLOC           7
 #define XFS_RMAP_EXTENT_FREE            8
 #define XFS_RMAP_EXTENT_TYPE_MASK       0xFF
diff --git a/fs/xfs/xfs_rmap_item.c b/fs/xfs/xfs_rmap_item.c
index 0432a459871c..19d817e3e1d9 100644
--- a/fs/xfs/xfs_rmap_item.c
+++ b/fs/xfs/xfs_rmap_item.c
@@ -441,8 +441,11 @@ xfs_rui_recover(
                                    XFS_FSB_TO_DADDR(mp, rmap->me_startblock));
                 switch (rmap->me_flags & XFS_RMAP_EXTENT_TYPE_MASK) {
                 case XFS_RMAP_EXTENT_MAP:
+                case XFS_RMAP_EXTENT_MAP_SHARED:
                 case XFS_RMAP_EXTENT_UNMAP:
+                case XFS_RMAP_EXTENT_UNMAP_SHARED:
                 case XFS_RMAP_EXTENT_CONVERT:
+                case XFS_RMAP_EXTENT_CONVERT_SHARED:
                 case XFS_RMAP_EXTENT_ALLOC:
                 case XFS_RMAP_EXTENT_FREE:
                         op_ok = true;
diff --git a/fs/xfs/xfs_trans_rmap.c b/fs/xfs/xfs_trans_rmap.c
index 5a50ef881568..9ead064b5e90 100644
--- a/fs/xfs/xfs_trans_rmap.c
+++ b/fs/xfs/xfs_trans_rmap.c
@@ -48,12 +48,21 @@ xfs_trans_set_rmap_flags(
         case XFS_RMAP_MAP:
                 rmap->me_flags |= XFS_RMAP_EXTENT_MAP;
                 break;
+        case XFS_RMAP_MAP_SHARED:
+                rmap->me_flags |= XFS_RMAP_EXTENT_MAP_SHARED;
+                break;
         case XFS_RMAP_UNMAP:
                 rmap->me_flags |= XFS_RMAP_EXTENT_UNMAP;
                 break;
+        case XFS_RMAP_UNMAP_SHARED:
+                rmap->me_flags |= XFS_RMAP_EXTENT_UNMAP_SHARED;
+                break;
         case XFS_RMAP_CONVERT:
                 rmap->me_flags |= XFS_RMAP_EXTENT_CONVERT;
                 break;
+        case XFS_RMAP_CONVERT_SHARED:
+                rmap->me_flags |= XFS_RMAP_EXTENT_CONVERT_SHARED;
+                break;
         case XFS_RMAP_ALLOC:
                 rmap->me_flags |= XFS_RMAP_EXTENT_ALLOC;
                 break;