1 files changed, 0 insertions, 45 deletions
diff --git a/lib/btrfsprogs/btrfsinspect/rebuildnodes/btrees/nestedlock.go b/lib/btrfsprogs/btrfsinspect/rebuildnodes/btrees/nestedlock.go
deleted file mode 100644
index c1ffa18..0000000
--- a/lib/btrfsprogs/btrfsinspect/rebuildnodes/btrees/nestedlock.go
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright (C) 2023  Luke Shumaker <lukeshu@lukeshu.com>
-//
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-package btrees
-
-import (
-	"context"
-	"sync"
-)
-
-// A nestedMutex is like a sync.Mutex, but while it is locked by call
-// 'A', may be simultaneously locked by subsequent calls if the
-// subsequent calls use a Context descended from the one returned by
-// the 'A' call to .Lock().
-type nestedMutex struct {
-	inner sync.Mutex
-	depth int
-}
-
-type nestedMutexCtxKey struct{}
-
-// Lock locks the mutex.  It is invalid to use a Context returned from
-// Lock in a different goroutine than the one it was created in.  It
-// is invalid to use a Context returned from Lock after the mutex has
-// subsequently become unlocked.
-func (m *nestedMutex) Lock(ctx context.Context) context.Context {
-	if other, ok := ctx.Value(nestedMutexCtxKey{}).(*nestedMutex); ok && other == m {
-		m.depth++
-		return ctx
-	}
-	m.inner.Lock()
-	return context.WithValue(ctx, nestedMutexCtxKey{}, m)
-}
-
-// Unlock unlocks the mutex.  It is invalid to call Unlock if the
-// mutex is not already locked.  It is invalid to call Unlock from
-// multiple goroutines simultaneously.
-func (m *nestedMutex) Unlock() {
-	if m.depth > 0 {
-		m.depth--
-	} else {
-		m.inner.Unlock()
-	}
-}