From 5f45fa7d378edae2fac73517384749fc73d24e89 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Tue, 28 Feb 2023 20:33:28 -0700
Subject: tree-wide: Don't pass around a full rebuildmappings.ScanDevicesResult
 when a simple list of nodes will do

---
 cmd/btrfs-rec/inspect/rebuildtrees/scan.go | 40 ++++++++++++++----------------
 1 file changed, 18 insertions(+), 22 deletions(-)

(limited to 'cmd/btrfs-rec/inspect/rebuildtrees/scan.go')

diff --git a/cmd/btrfs-rec/inspect/rebuildtrees/scan.go b/cmd/btrfs-rec/inspect/rebuildtrees/scan.go
index 2995a2e..ba56c5b 100644
--- a/cmd/btrfs-rec/inspect/rebuildtrees/scan.go
+++ b/cmd/btrfs-rec/inspect/rebuildtrees/scan.go
@@ -10,17 +10,15 @@ import (
 
 	"github.com/datawire/dlib/dlog"
 
-	"git.lukeshu.com/btrfs-progs-ng/cmd/btrfs-rec/inspect/rebuildmappings"
 	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs"
 	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfstree"
 	"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsvol"
 	"git.lukeshu.com/btrfs-progs-ng/lib/btrfsutil"
 	"git.lukeshu.com/btrfs-progs-ng/lib/containers"
-	"git.lukeshu.com/btrfs-progs-ng/lib/maps"
 	"git.lukeshu.com/btrfs-progs-ng/lib/textui"
 )
 
-func ScanDevices(ctx context.Context, fs *btrfs.FS, scanResults rebuildmappings.ScanDevicesResult) (btrfstree.Superblock, btrfsutil.Graph, *btrfsutil.KeyIO, error) {
+func ScanDevices(ctx context.Context, fs *btrfs.FS, nodeList []btrfsvol.LogicalAddr) (btrfstree.Superblock, btrfsutil.Graph, *btrfsutil.KeyIO, error) {
 	dlog.Info(ctx, "Reading superblock...")
 	sb, err := fs.Superblock()
 	if err != nil {
@@ -30,7 +28,7 @@ func ScanDevices(ctx context.Context, fs *btrfs.FS, scanResults rebuildmappings.
 	dlog.Infof(ctx, "Reading node data from FS...")
 
 	var stats textui.Portion[int]
-	stats.D = countNodes(scanResults)
+	stats.D = len(nodeList)
 	progressWriter := textui.NewProgress[textui.Portion[int]](
 		dlog.WithField(ctx, "btrfs.inspect.rebuild-trees.read.substep", "read-nodes"),
 		dlog.LogLevelInfo, textui.Tunable(1*time.Second))
@@ -39,27 +37,25 @@ func ScanDevices(ctx context.Context, fs *btrfs.FS, scanResults rebuildmappings.
 	keyIO := btrfsutil.NewKeyIO(fs, *sb)
 
 	progressWriter.Set(stats)
-	for _, devResults := range scanResults {
-		for _, laddr := range maps.SortedKeys(devResults.FoundNodes) {
-			if err := ctx.Err(); err != nil {
-				return btrfstree.Superblock{}, btrfsutil.Graph{}, nil, err
-			}
-			nodeRef, err := btrfstree.ReadNode[btrfsvol.LogicalAddr](fs, *sb, laddr, btrfstree.NodeExpectations{
-				LAddr: containers.Optional[btrfsvol.LogicalAddr]{OK: true, Val: laddr},
-			})
-			if err != nil {
-				btrfstree.FreeNodeRef(nodeRef)
-				return btrfstree.Superblock{}, btrfsutil.Graph{}, nil, err
-			}
+	for _, laddr := range nodeList {
+		if err := ctx.Err(); err != nil {
+			return btrfstree.Superblock{}, btrfsutil.Graph{}, nil, err
+		}
+		nodeRef, err := btrfstree.ReadNode[btrfsvol.LogicalAddr](fs, *sb, laddr, btrfstree.NodeExpectations{
+			LAddr: containers.Optional[btrfsvol.LogicalAddr]{OK: true, Val: laddr},
+		})
+		if err != nil {
+			btrfstree.FreeNodeRef(nodeRef)
+			return btrfstree.Superblock{}, btrfsutil.Graph{}, nil, err
+		}
 
-			nodeGraph.InsertNode(nodeRef)
-			keyIO.InsertNode(nodeRef)
+		nodeGraph.InsertNode(nodeRef)
+		keyIO.InsertNode(nodeRef)
 
-			btrfstree.FreeNodeRef(nodeRef)
+		btrfstree.FreeNodeRef(nodeRef)
 
-			stats.N++
-			progressWriter.Set(stats)
-		}
+		stats.N++
+		progressWriter.Set(stats)
 	}
 	if stats.N != stats.D {
 		panic("should not happen")
-- 
cgit v1.2.3-54-g00ecf