1st patch, remove 16MiB restriction from extent_same ioctl(), by doing iterations over passed range.
I did not see much difference in performance, so it's just remove logic restriction. 2-3 pathes, update defrag ioctl(): - Fix bad behaviour with full rewriting all compressed extents in defrag range. (that also make autodefrag on compressed fs not so expensive) - Allow userspace specify NONE as target compression type, that allow users to uncompress files by defragmentation with btrfs-progs - Make defrag ioctl understood requested compression type and current compression type of extents, to make btrfs fi def -rc<type> idempotent operation. i.e. now possible to say, make all extents compressed with lzo, and btrfs will not recompress lzo compressed data. Same for zlib, zstd, none. (patch to btrfs-progs in PR on kdave GitHub). 4th patch, reduce size of struct btrfs_inode - btrfs_inode store fields like: prop_compress, defrag_compress and after 3rd patch, change_compress. They use unsigned as a type, and use 12 bytes in sum. But change_compress is a bitflag, and prop_compress/defrag_compress only store compression type, that currently use 0-3 of 2^32-1. So, set a bitfields on that vars, and reduce size of btrfs_inode: 1136 -> 1128. Timofey Titovets (4): Btrfs: btrfs_dedupe_file_range() ioctl, remove 16MiB restriction Btrfs: make should_defrag_range() understood compressed extents Btrfs: allow btrfs_defrag_file() uncompress files on defragmentation Btrfs: reduce size of struct btrfs_inode fs/btrfs/btrfs_inode.h | 5 +- fs/btrfs/inode.c | 4 +- fs/btrfs/ioctl.c | 203 +++++++++++++++++++++++++++++++------------------ 3 files changed, 133 insertions(+), 79 deletions(-) -- 2.15.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
