diff options
Diffstat (limited to 'lib/btrfs/btrfsvol/chunk.go')
| -rw-r--r-- | lib/btrfs/btrfsvol/chunk.go | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/lib/btrfs/btrfsvol/chunk.go b/lib/btrfs/btrfsvol/chunk.go index 5f1baa8..a112fd3 100644 --- a/lib/btrfs/btrfsvol/chunk.go +++ b/lib/btrfs/btrfsvol/chunk.go @@ -1,4 +1,4 @@ -// Copyright (C) 2022 Luke Shumaker <lukeshu@lukeshu.com> +// Copyright (C) 2022-2023 Luke Shumaker <lukeshu@lukeshu.com> // // SPDX-License-Identifier: GPL-2.0-or-later @@ -22,12 +22,15 @@ type chunkMapping struct { Flags containers.Optional[BlockGroupFlags] } -type ChunkMapping = chunkMapping +// Compare implements containers.Ordered. +func (a chunkMapping) Compare(b chunkMapping) int { + return containers.NativeCompare(a.LAddr, b.LAddr) +} // return -1 if 'a' is wholly to the left of 'b' // return 0 if there is some overlap between 'a' and 'b' // return 1 if 'a is wholly to the right of 'b' -func (a chunkMapping) cmpRange(b chunkMapping) int { +func (a chunkMapping) compareRange(b chunkMapping) int { switch { case a.LAddr.Add(a.Size) <= b.LAddr: // 'a' is wholly to the left of 'b'. @@ -44,7 +47,7 @@ func (a chunkMapping) cmpRange(b chunkMapping) int { func (a chunkMapping) union(rest ...chunkMapping) (chunkMapping, error) { // sanity check for _, chunk := range rest { - if a.cmpRange(chunk) != 0 { + if a.compareRange(chunk) != 0 { return chunkMapping{}, fmt.Errorf("chunks don't overlap") } } @@ -79,7 +82,7 @@ func (a chunkMapping) union(rest ...chunkMapping) (chunkMapping, error) { } ret.PAddrs = maps.Keys(paddrs) sort.Slice(ret.PAddrs, func(i, j int) bool { - return ret.PAddrs[i].Cmp(ret.PAddrs[j]) < 0 + return ret.PAddrs[i].Compare(ret.PAddrs[j]) < 0 }) // figure out the flags (.Flags) for _, chunk := range chunks { |