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| author | Luke Shumaker <lukeshu@lukeshu.com> | 2023-03-17 18:38:14 -0400 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@lukeshu.com> | 2023-03-17 18:38:14 -0400 |
| commit | 0f85e72d1331b49b52925d6cc5ad083a0376104c (patch) | |
| tree | 9ba66e893d6f66096f6b06284d09c8eb3e50facc /lib/btrfs/btrfsitem/item_fileextent.go | |
| parent | c0f33186aa7a8903c5e7406024f13fad48cd14e3 (diff) | |
| parent | 1ea26f04701fa66e36b058f3efb3a6c7059cdc5c (diff) | |
Merge branch 'lukeshu/lint'
Diffstat (limited to 'lib/btrfs/btrfsitem/item_fileextent.go')
| -rw-r--r-- | lib/btrfs/btrfsitem/item_fileextent.go | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/lib/btrfs/btrfsitem/item_fileextent.go b/lib/btrfs/btrfsitem/item_fileextent.go index 6b08897..df3d371 100644 --- a/lib/btrfs/btrfsitem/item_fileextent.go +++ b/lib/btrfs/btrfsitem/item_fileextent.go @@ -12,8 +12,19 @@ import ( "git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsvol" ) -// key.objectid = inode -// key.offset = offset within file +// FileExtent items map from regions in a file to regions in the +// logical address space. +// +// Compare with: +// +// - Extents, which map from regions in the logical address space to +// regions in a file. +// - Metadata, which are like Extents but without .Info. +// +// Key: +// +// key.objectid = inode +// key.offset = offset within file type FileExtent struct { // complex EXTENT_DATA=108 Generation btrfsprim.Generation `bin:"off=0x0, siz=0x8"` // transaction ID that created this extent RAMBytes int64 `bin:"off=0x8, siz=0x8"` // upper bound of what compressed data will decompress to |