[PATCH 61/71] xfs: add shared rmap map/unmap/convert log item types

["Darrick J. Wong" <darrick.wong@xxxxxxxxxx>]

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@xxxxxxxxxx>
---
 fs/xfs/libxfs/xfs_log_format.h |    3 +++
 fs/xfs/xfs_rmap_item.c         |    3 +++
 fs/xfs/xfs_trans_rmap.c        |    9 +++++++++
 3 files changed, 15 insertions(+)


diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h
index d788d01..75f9890 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 2500f28..f4bf026 100644
--- a/fs/xfs/xfs_rmap_item.c
+++ b/fs/xfs/xfs_rmap_item.c
@@ -459,8 +459,11 @@ 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 5a50ef8..9ead064 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;