diff options
Diffstat (limited to 'lib/btrfs/btrfsitem/item_metadata.go')
| -rw-r--r-- | lib/btrfs/btrfsitem/item_metadata.go | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/btrfs/btrfsitem/item_metadata.go b/lib/btrfs/btrfsitem/item_metadata.go index db2315e..10ae994 100644 --- a/lib/btrfs/btrfsitem/item_metadata.go +++ b/lib/btrfs/btrfsitem/item_metadata.go @@ -8,7 +8,22 @@ import ( "git.lukeshu.com/btrfs-progs-ng/lib/binstruct" ) +// Metadata items map from regions in the logical address space to +// regions in a file. +// // Metadata is like Extent, but doesn't have .Info. +// +// Compare with: +// +// - Extents, which are the same as Metadata, but have an extra +// .Info member. +// - FileExtents, which map from regions in a file to regions in the +// logical address space. +// +// Key: +// +// key.objectid = laddr of the extent +// key.offset = length of the extent type Metadata struct { // complex METADATA_ITEM=169 Head ExtentHeader Refs []ExtentInlineRef |