mirrors/scoutfs
1
0
Fork 0
mirror of https://github.com/versity/scoutfs.git synced 2026-06-06 03:32:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

scoutfs-utils: remove unused packed extents

Browse Source 
Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2020-10-21 13:34:27 -07:00
committed by Zach Brown
parent 4ca0b3ff74
commit b424208555
1 changed files with 0 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
utils/src/format.h
View File

@@ -515,37 +515,6 @@ struct scoutfs_bloom_block {
#define SCOUTFS_FREE_EXTENT_BLKNO_TYPE 1
#define SCOUTFS_FREE_EXTENT_LEN_TYPE 2
/*
* The extents that map blocks in a fixed-size logical region of a file
* are packed and stored in item values. The packed extents are
* contiguous so the starting logical block is implicit from the length
* of previous extents. Sparse regions are represented by 0 flags and
* blkno. The blkno of a packed extent is encoded as the zigzag (lsb is
* sign bit) difference from the last blkno of the previous extent.
* This guarantees that non-sparse extents must have a blkno delta of at
* least -1/1. High zero byte aren't stored.
*/
struct scoutfs_packed_extent {
__le16 count;
#if defined(__LITTLE_ENDIAN_BITFIELD)
__u8 diff_bytes:4,
flags:3,
final:1;
#elif defined(__BIG_ENDIAN_BITFIELD)
__u8 final:1,
flags:3,
diff_bytes:4;
#else
#error "no {BIG,LITTLE}_ENDIAN_BITFIELD defined?"
#endif
__u8 le_blkno_diff[0];
} __packed;
#define SCOUTFS_PACKEXT_BLOCKS (8 * 1024 * 1024 / SCOUTFS_BLOCK_SM_SIZE)
#define SCOUTFS_PACKEXT_BASE_SHIFT (ilog2(SCOUTFS_PACKEXT_BLOCKS))
#define SCOUTFS_PACKEXT_BASE_MASK (~((__u64)SCOUTFS_PACKEXT_BLOCKS - 1))
#define SCOUTFS_PACKEXT_MAX_BYTES SCOUTFS_MAX_VAL_SIZE
/* file data extents have start and len in key */
struct scoutfs_data_extent_val {
__le64 blkno;