diff options
author | Luke Shumaker <lukeshu@lukeshu.com> | 2023-02-12 16:17:02 -0700 |
---|---|---|
committer | Luke Shumaker <lukeshu@lukeshu.com> | 2023-02-12 16:17:02 -0700 |
commit | cfcc753dc8906817e15b1b7c36b4dc12462d12e4 (patch) | |
tree | f5d2aa0caaa4cb336017ba7595c3425f4aa00bfc /lib/btrfs/io4_fs.go | |
parent | 29b6b9f997913f13a0bff8bb1278a61302413615 (diff) | |
parent | f76faa4b8debd9c94751a03dd65e46c80a340a82 (diff) |
Merge branch 'lukeshu/fast'
Diffstat (limited to 'lib/btrfs/io4_fs.go')
-rw-r--r-- | lib/btrfs/io4_fs.go | 76 |
1 files changed, 39 insertions, 37 deletions
diff --git a/lib/btrfs/io4_fs.go b/lib/btrfs/io4_fs.go index fce9c76..56cf266 100644 --- a/lib/btrfs/io4_fs.go +++ b/lib/btrfs/io4_fs.go @@ -75,10 +75,10 @@ type Subvolume struct { rootVal btrfsitem.Root rootErr error - bareInodeCache *containers.LRUCache[btrfsprim.ObjID, *BareInode] - fullInodeCache *containers.LRUCache[btrfsprim.ObjID, *FullInode] - dirCache *containers.LRUCache[btrfsprim.ObjID, *Dir] - fileCache *containers.LRUCache[btrfsprim.ObjID, *File] + bareInodeCache containers.ARCache[btrfsprim.ObjID, *BareInode] + fullInodeCache containers.ARCache[btrfsprim.ObjID, *FullInode] + dirCache containers.ARCache[btrfsprim.ObjID, *Dir] + fileCache containers.ARCache[btrfsprim.ObjID, *File] } func (sv *Subvolume) init() { @@ -88,19 +88,19 @@ func (sv *Subvolume) init() { sv.rootErr = err } else { switch rootBody := root.Body.(type) { - case btrfsitem.Root: - sv.rootVal = rootBody - case btrfsitem.Error: + case *btrfsitem.Root: + sv.rootVal = rootBody.Clone() + case *btrfsitem.Error: sv.rootErr = fmt.Errorf("FS_TREE ROOT_ITEM has malformed body: %w", rootBody.Err) default: panic(fmt.Errorf("should not happen: ROOT_ITEM has unexpected item type: %T", rootBody)) } } - sv.bareInodeCache = containers.NewLRUCache[btrfsprim.ObjID, *BareInode](textui.Tunable(128)) - sv.fullInodeCache = containers.NewLRUCache[btrfsprim.ObjID, *FullInode](textui.Tunable(128)) - sv.dirCache = containers.NewLRUCache[btrfsprim.ObjID, *Dir](textui.Tunable(128)) - sv.fileCache = containers.NewLRUCache[btrfsprim.ObjID, *File](textui.Tunable(128)) + sv.bareInodeCache.MaxLen = textui.Tunable(128) + sv.fullInodeCache.MaxLen = textui.Tunable(128) + sv.dirCache.MaxLen = textui.Tunable(128) + sv.fileCache.MaxLen = textui.Tunable(128) }) } @@ -111,7 +111,7 @@ func (sv *Subvolume) GetRootInode() (btrfsprim.ObjID, error) { func (sv *Subvolume) LoadBareInode(inode btrfsprim.ObjID) (*BareInode, error) { sv.init() - val := sv.bareInodeCache.GetOrElse(inode, func() (val *BareInode) { + val := containers.LoadOrElse[btrfsprim.ObjID, *BareInode](&sv.bareInodeCache, inode, func(inode btrfsprim.ObjID) (val *BareInode) { val = &BareInode{ Inode: inode, } @@ -126,9 +126,10 @@ func (sv *Subvolume) LoadBareInode(inode btrfsprim.ObjID) (*BareInode, error) { } switch itemBody := item.Body.(type) { - case btrfsitem.Inode: - val.InodeItem = &itemBody - case btrfsitem.Error: + case *btrfsitem.Inode: + bodyCopy := itemBody.Clone() + val.InodeItem = &bodyCopy + case *btrfsitem.Error: val.Errs = append(val.Errs, fmt.Errorf("malformed inode: %w", itemBody.Err)) default: panic(fmt.Errorf("should not happen: INODE_ITEM has unexpected item type: %T", itemBody)) @@ -144,7 +145,7 @@ func (sv *Subvolume) LoadBareInode(inode btrfsprim.ObjID) (*BareInode, error) { func (sv *Subvolume) LoadFullInode(inode btrfsprim.ObjID) (*FullInode, error) { sv.init() - val := sv.fullInodeCache.GetOrElse(inode, func() (val *FullInode) { + val := containers.LoadOrElse[btrfsprim.ObjID, *FullInode](&sv.fullInodeCache, inode, func(indoe btrfsprim.ObjID) (val *FullInode) { val = &FullInode{ BareInode: BareInode{ Inode: inode, @@ -164,24 +165,25 @@ func (sv *Subvolume) LoadFullInode(inode btrfsprim.ObjID) (*FullInode, error) { switch item.Key.ItemType { case btrfsitem.INODE_ITEM_KEY: switch itemBody := item.Body.(type) { - case btrfsitem.Inode: + case *btrfsitem.Inode: if val.InodeItem != nil { if !reflect.DeepEqual(itemBody, *val.InodeItem) { val.Errs = append(val.Errs, fmt.Errorf("multiple inodes")) } continue } - val.InodeItem = &itemBody - case btrfsitem.Error: + bodyCopy := itemBody.Clone() + val.InodeItem = &bodyCopy + case *btrfsitem.Error: val.Errs = append(val.Errs, fmt.Errorf("malformed INODE_ITEM: %w", itemBody.Err)) default: panic(fmt.Errorf("should not happen: INODE_ITEM has unexpected item type: %T", itemBody)) } case btrfsitem.XATTR_ITEM_KEY: switch itemBody := item.Body.(type) { - case btrfsitem.DirEntry: + case *btrfsitem.DirEntry: val.XAttrs[string(itemBody.Name)] = string(itemBody.Data) - case btrfsitem.Error: + case *btrfsitem.Error: val.Errs = append(val.Errs, fmt.Errorf("malformed XATTR_ITEM: %w", itemBody.Err)) default: panic(fmt.Errorf("should not happen: XATTR_ITEM has unexpected item type: %T", itemBody)) @@ -200,7 +202,7 @@ func (sv *Subvolume) LoadFullInode(inode btrfsprim.ObjID) (*FullInode, error) { func (sv *Subvolume) LoadDir(inode btrfsprim.ObjID) (*Dir, error) { sv.init() - val := sv.dirCache.GetOrElse(inode, func() (val *Dir) { + val := containers.LoadOrElse[btrfsprim.ObjID, *Dir](&sv.dirCache, inode, func(inode btrfsprim.ObjID) (val *Dir) { val = new(Dir) fullInode, err := sv.LoadFullInode(inode) if err != nil { @@ -225,15 +227,15 @@ func (dir *Dir) populate() { switch item.Key.ItemType { case btrfsitem.INODE_REF_KEY: switch body := item.Body.(type) { - case btrfsitem.InodeRefs: - if len(body) != 1 { + case *btrfsitem.InodeRefs: + if len(body.Refs) != 1 { dir.Errs = append(dir.Errs, fmt.Errorf("INODE_REF item with %d entries on a directory", - len(body))) + len(body.Refs))) continue } ref := InodeRef{ Inode: btrfsprim.ObjID(item.Key.Offset), - InodeRef: body[0], + InodeRef: body.Refs[0], } if dir.DotDot != nil { if !reflect.DeepEqual(ref, *dir.DotDot) { @@ -242,14 +244,14 @@ func (dir *Dir) populate() { continue } dir.DotDot = &ref - case btrfsitem.Error: + case *btrfsitem.Error: dir.Errs = append(dir.Errs, fmt.Errorf("malformed INODE_REF: %w", body.Err)) default: panic(fmt.Errorf("should not happen: INODE_REF has unexpected item type: %T", body)) } case btrfsitem.DIR_ITEM_KEY: switch entry := item.Body.(type) { - case btrfsitem.DirEntry: + case *btrfsitem.DirEntry: namehash := btrfsitem.NameHash(entry.Name) if namehash != item.Key.Offset { dir.Errs = append(dir.Errs, fmt.Errorf("direntry crc32c mismatch: key=%#x crc32c(%q)=%#x", @@ -262,8 +264,8 @@ func (dir *Dir) populate() { } continue } - dir.ChildrenByName[string(entry.Name)] = entry - case btrfsitem.Error: + dir.ChildrenByName[string(entry.Name)] = entry.Clone() + case *btrfsitem.Error: dir.Errs = append(dir.Errs, fmt.Errorf("malformed DIR_ITEM: %w", entry.Err)) default: panic(fmt.Errorf("should not happen: DIR_ITEM has unexpected item type: %T", entry)) @@ -271,15 +273,15 @@ func (dir *Dir) populate() { case btrfsitem.DIR_INDEX_KEY: index := item.Key.Offset switch entry := item.Body.(type) { - case btrfsitem.DirEntry: + case *btrfsitem.DirEntry: if other, exists := dir.ChildrenByIndex[index]; exists { if !reflect.DeepEqual(entry, other) { dir.Errs = append(dir.Errs, fmt.Errorf("multiple instances of direntry index %v", index)) } continue } - dir.ChildrenByIndex[index] = entry - case btrfsitem.Error: + dir.ChildrenByIndex[index] = entry.Clone() + case *btrfsitem.Error: dir.Errs = append(dir.Errs, fmt.Errorf("malformed DIR_INDEX: %w", entry.Err)) default: panic(fmt.Errorf("should not happen: DIR_INDEX has unexpected item type: %T", entry)) @@ -336,7 +338,7 @@ func (dir *Dir) AbsPath() (string, error) { func (sv *Subvolume) LoadFile(inode btrfsprim.ObjID) (*File, error) { sv.init() - val := sv.fileCache.GetOrElse(inode, func() (val *File) { + val := containers.LoadOrElse[btrfsprim.ObjID, *File](&sv.fileCache, inode, func(inode btrfsprim.ObjID) (val *File) { val = new(File) fullInode, err := sv.LoadFullInode(inode) if err != nil { @@ -361,12 +363,12 @@ func (file *File) populate() { // TODO case btrfsitem.EXTENT_DATA_KEY: switch itemBody := item.Body.(type) { - case btrfsitem.FileExtent: + case *btrfsitem.FileExtent: file.Extents = append(file.Extents, FileExtent{ OffsetWithinFile: int64(item.Key.Offset), - FileExtent: itemBody, + FileExtent: *itemBody, }) - case btrfsitem.Error: + case *btrfsitem.Error: file.Errs = append(file.Errs, fmt.Errorf("malformed EXTENT_DATA: %w", itemBody.Err)) default: panic(fmt.Errorf("should not happen: EXTENT_DATA has unexpected item type: %T", itemBody)) |