linux-dev/drivers/staging/erofs/Makefile, branch master

erofs: move erofs out of staging

2019-08-24T12:20:10Z

EROFS filesystem has been merged into linux-staging for a year. EROFS is designed to be a better solution of saving extra storage space with guaranteed end-to-end performance for read-only files with the help of reduced metadata, fixed-sized output compression and decompression inplace technologies. In the past year, EROFS was greatly improved by many people as a staging driver, self-tested, betaed by a large number of our internal users, successfully applied to almost all in-service HUAWEI smartphones as the part of EMUI 9.1 and proven to be stable enough to be moved out of staging. EROFS is a self-contained filesystem driver. Although there are still some TODOs to be more generic, we have a dedicated team actively keeping on working on EROFS in order to make it better with the evolution of Linux kernel as the other in-kernel filesystems. As Pavel suggested, it's better to do as one commit since git can do moves and all histories will be saved in this way. Let's promote it from staging and enhance it more actively as a "real" part of kernel for more wider scenarios! Cc: Greg Kroah-Hartman Cc: Alexander Viro Cc: Andrew Morton Cc: Stephen Rothwell Cc: Theodore Ts'o Cc: Pavel Machek Cc: David Sterba Cc: Amir Goldstein Cc: Christoph Hellwig Cc: Darrick J . Wong Cc: Dave Chinner Cc: Jaegeuk Kim Cc: Jan Kara Cc: Richard Weinberger Cc: Linus Torvalds Cc: Chao Yu Cc: Miao Xie Cc: Li Guifu Cc: Fang Wei Signed-off-by: Gao Xiang Link: https://lore.kernel.org/r/20190822213659.5501-1-hsiangkao@aol.com Signed-off-by: Greg Kroah-Hartman

staging: erofs: rename source files for better understanding

2019-08-02T11:52:03Z

Keep in line with erofs-outofstaging patchset as well, see https://lore.kernel.org/linux-fsdevel/20190725095658.155779-1-gaoxiang25@huawei.com/ Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Link: https://lore.kernel.org/r/20190731155752.210602-3-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman

staging: erofs: update source file headers

2019-08-02T11:52:03Z

- Use the correct style for all SPDX License Identifiers; - Get rid of the unnecessary license boilerplate; - Use "GPL-2.0-only" instead of "GPL-2.0" suggested-by Stephen. Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Link: https://lore.kernel.org/r/20190731155752.210602-2-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman

staging: erofs: switch to new decompression backend

2019-06-26T01:44:40Z

This patch integrates new decompression framework to erofs decompression path, and remove the old decompression implementation as well. On kirin980 platform, sequential read is slightly improved to 778MiB/s after the new decompression backend is used. Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Signed-off-by: Greg Kroah-Hartman

staging: erofs: introduce generic decompression backend

2019-06-26T01:44:39Z

This patch adds a new generic decompression framework in order to replace the old LZ4-specific decompression code. Even though LZ4 is still the only supported algorithm, yet it is more cleaner and easy to integrate new algorithm than the old almost hard-coded decompression backend. Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Signed-off-by: Greg Kroah-Hartman

staging: erofs: add compacted compression indexes support

2019-06-26T01:44:39Z

This patch aims at compacted compression indexes: 1) cleanup z_erofs_map_blocks_iter and move into zmap.c; 2) add compacted 4/2B decoding support. On kirin980 platform, sequential read is increased about 6% (725MiB/s -> 770MiB/s) on enwik9 dataset if compacted 2B feature is enabled. Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Signed-off-by: Greg Kroah-Hartman

staging: erofs: drop unneeded -Wall addition

2019-05-20T05:40:41Z

The top level Makefile adds -Wall globally: KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ I see two "-Wall" added for compiling objects in drivers/staging/erofs/. Signed-off-by: Masahiro Yamada Reviewed-by: Chao Yu Reviewed-by: Gao Xiang Signed-off-by: Greg Kroah-Hartman

staging: prefix header search paths with $(srctree)/

2019-02-04T11:30:27Z

Currently, the Kbuild core manipulates header search paths in a crazy way [1]. To fix this mess, I want all Makefiles to add explicit $(srctree)/ to the search paths in the srctree. Some Makefiles are already written in that way, but not all. The goal of this work is to make the notation consistent, and finally get rid of the gross hacks. Having whitespaces after -I does not matter since commit 48f6e3cf5bc6 ("kbuild: do not drop -I without parameter"). [1]: https://patchwork.kernel.org/patch/9632347/ Signed-off-by: Masahiro Yamada Signed-off-by: Greg Kroah-Hartman

staging: erofs: use the new LZ4_decompress_safe_partial()

2018-11-08T11:59:46Z

LZ4_decompress_safe_partial() can now decode exactly the nb of bytes requested after the upstreamed commit 2209fda323e2 ("lib/lz4: update LZ4 decompressor module"), remove the erofs hacked lz4 decompression code. A more cleaned compressor wrapper will be introduced in the subsequent patches in order to prepare for supporting multiple compression algorithms. Signed-off-by: Gao Xiang Reviewed-by: Chao Yu Signed-off-by: Greg Kroah-Hartman

staging: erofs: add a generic z_erofs VLE decompressor

2018-07-27T15:24:09Z

Currently, this patch only simply implements LZ4 decompressor due to its development priority. In the future, erofs will support more compression algorithm and format other than LZ4, thus a generic decompressor interface will be needed. Signed-off-by: Gao Xiang Signed-off-by: Greg Kroah-Hartman