From: Linus Torvalds Date: Mon, 26 Apr 2021 20:28:12 +0000 (-0700) Subject: Merge tag 'erofs-for-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang... X-Git-Tag: accepted/tizen/unified/20230118.172025~7403 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b5b3097d9cbb1eb3df0ade9507585e6e9e3b2385;p=platform%2Fkernel%2Flinux-rpi.git Merge tag 'erofs-for-5.13-rc1' of git://git./linux/kernel/git/xiang/erofs Pull erofs updates from Gao Xiang: "In this cycle, we would like to introduce a new feature called big pcluster so EROFS can compress file data into more than 1 fs block and different pcluster size can be selected for each (sub-)files by design. The current EROFS test results on my laptop are [1]: Testscript: erofs-openbenchmark Testdata: enwik9 (1000000000 bytes) ________________________________________________________________ | file system | size | seq read | rand read | rand9m read | |_______________|___________|_ MiB/s __|__ MiB/s __|___ MiB/s ___| |___erofs_4k____|_556879872_|_ 781.4 __|__ 55.3 ___|___ 25.3 ___| |___erofs_16k___|_452509696_|_ 864.8 __|_ 123.2 ___|___ 20.8 ___| |___erofs_32k___|_415223808_|_ 899.8 __|_ 105.8 _*_|___ 16.8 ____| |___erofs_64k___|_393814016_|_ 906.6 __|__ 66.6 _*_|___ 11.8 ____| |__squashfs_8k__|_556191744_|_ 64.9 __|__ 19.3 ___|____ 9.1 ____| |__squashfs_16k_|_502661120_|_ 98.9 __|__ 38.0 ___|____ 9.8 ____| |__squashfs_32k_|_458784768_|_ 115.4 __|__ 71.6 _*_|___ 10.0 ____| |_squashfs_128k_|_398204928_|_ 257.2 __|_ 253.8 _*_|___ 10.9 ____| |____ext4_4k____|____()_____|_ 786.6 __|__ 28.6 ___|___ 27.8 ____| which has been verified but I'd like warn it as experimental for a while. This matches erofs-utils dev branch and I'll also release a new userspace version for this later. Apart from that, several improvements are also included: eg complete a missing case for inplace I/O, optimize endio decompression logic for non-atomic contexts and support adjustable sliding window size, ... In addition to those, there are some cleanups as always. Summary: - avoid memory failure when applying rolling decompression - optimize endio decompression logic for non-atomic contexts - complete a missing case which can be safely selected for inplace I/O and thus decreasing more memory footprint - check unsupported on-disk inode i_format strictly - support adjustable lz4 sliding window size to decrease runtime memory footprint - support on-disk compression configurations - support big pcluster decompression - several code cleanups / spelling correction" * tag 'erofs-for-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: (21 commits) erofs: enable big pcluster feature erofs: support decompress big pcluster for lz4 backend erofs: support parsing big pcluster compact indexes erofs: support parsing big pcluster compress indexes erofs: adjust per-CPU buffers according to max_pclusterblks erofs: add big physical cluster definition erofs: fix up inplace I/O pointer for big pcluster erofs: introduce physical cluster slab pools erofs: introduce multipage per-CPU buffers erofs: reserve physical_clusterbits[] erofs: Clean up spelling mistakes found in fs/erofs erofs: add on-disk compression configurations erofs: introduce on-disk lz4 fs configurations erofs: support adjust lz4 history window size erofs: introduce erofs_sb_has_xxx() helpers erofs: add unsupported inode i_format check erofs: don't use erofs_map_blocks() any more erofs: complete a missing case for inplace I/O erofs: use sync decompression for atomic contexts only erofs: use workqueue decompression for atomic contexts only ... --- b5b3097d9cbb1eb3df0ade9507585e6e9e3b2385