Changes in Kconfig

3ca4bec4 - f2fs: switch to using the crc32 library

Mon, 02 Dec 2024 01:08:43 +0000

f2fs: switch to using the crc32 libraryNow that the crc32() library function takes advantage ofarchitecture-specific optimizations, it is unnecessary to go through thecrypto API. Just use crc32(). This is much simpler, and it improvesperformance due to eliminating the crypto API overhead.Reviewed-by: Ard Biesheuvel Acked-by: Chao Yu Link: https://lore.kernel.org/r/20241202010844.144356-19-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux-6.15/fs/f2fs/Kconfig

925c86a1 - fs: add CONFIG_BUFFER_HEAD

Tue, 01 Aug 2023 17:22:01 +0000

fs: add CONFIG_BUFFER_HEADAdd a new config option that controls building the buffer_head code, andselect it from all file systems and stacking drivers that need it.For the block device nodes and alternative iomap based buffered I/O pathis provided when buffer_head support is not enabled, and iomap needs aa small tweak to define the IOMAP_F_BUFFER_HEAD flag to 0 to not callinto the buffer_head code when it doesn't exist.Otherwise this is just Kconfig and ifdef changes.Signed-off-by: Christoph Hellwig Reviewed-by: Luis Chamberlain Reviewed-by: Johannes Thumshirn Link: https://lore.kernel.org/r/20230801172201.1923299-7-hch@lst.deSigned-off-by: Jens Axboe List of files: /linux-6.15/fs/f2fs/Kconfig

7f8e249d - f2fs: introduce F2FS_UNFAIR_RWSEM to support unfair rwsem

Thu, 03 Mar 2022 21:21:27 +0000

f2fs: introduce F2FS_UNFAIR_RWSEM to support unfair rwsemUnfair rwsem should be used when blk-cg is on. Otherwise, there is regression.FYI, we noticed a -26.7% regression of aim7.jobs-per-min due to commit:commit: e4544b63a7ee49e7fbebf35ece0a6acd3b9617ae ("f2fs: move f2fs to use reader-unfair rwsems")https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git masterin testcase: aim7on test machine: 88 threads 2 sockets Intel(R) Xeon(R) Gold 6238M CPU @ 2.10GHz with 128G memorywith following parameters: disk: 4BRD_12G md: RAID0 fs: f2fs test: sync_disk_rw load: 100 cpufreq_governor: performance ucode: 0x500320atest-description: AIM7 is a traditional UNIX system level benchmark suite which is used to test and measure the performance of multiuser system.test-url: https://sourceforge.net/projects/aimbench/files/aim-suite7/Reported-by: kernel test robot Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

1517c1a7 - f2fs: implement iomap operations

Fri, 23 Jul 2021 07:59:20 +0000

f2fs: implement iomap operationsImplement 'struct iomap_ops' for f2fs, in preparation for making f2fsuse iomap for direct I/O.Note that this may be used for other things besides direct I/O in thefuture; however, for now I've only tested it for direct I/O.Signed-off-by: Eric Biggers Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

52118743 - f2fs: separate out iostat feature

Fri, 20 Aug 2021 03:52:28 +0000

f2fs: separate out iostat featureAdded F2FS_IOSTAT config option to support getting IO statistics throughsysfs and printing out periodic IO statistics tracepoint events andmoved I/O statistics related codes into separate files for bettermaintenance.Signed-off-by: Daeho Jeong Reviewed-by: Chao Yu [Jaegeuk Kim: set default=y]Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

6b3ba1e7 - f2fs: Kconfig: clean up config options about compression

Thu, 05 Aug 2021 13:30:24 +0000

f2fs: Kconfig: clean up config options about compressionIn fs/f2fs/Kconfig, F2FS_FS_LZ4HC depends on F2FS_FS_LZ4 and F2FS_FS_LZ4depends on F2FS_FS_COMPRESSION, so no need to make F2FS_FS_LZ4HC dependson F2FS_FS_COMPRESSION explicitly, remove the redudant "depends on", dothe similar thing for F2FS_FS_LZORLE.At the same time, it is better to move F2FS_FS_LZORLE next to F2FS_FS_LZO,it looks like a little more clear when make menuconfig, the location of"LZO-RLE compression support" is under "LZO compression support" insteadof "F2FS compression feature".Without this patch:F2FS compression feature LZO compression support LZ4 compression support LZ4HC compression support ZSTD compression support LZO-RLE compression supportWith this patch:F2FS compression feature LZO compression support LZO-RLE compression support LZ4 compression support LZ4HC compression support ZSTD compression supportSigned-off-by: Tiezhu Yang Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

72f85881 - f2fs: compress: Allow modular (de)compression algorithms

Fri, 26 Feb 2021 15:51:42 +0000

f2fs: compress: Allow modular (de)compression algorithmsIf F2FS_FS is modular, enabling the compressions optionsF2FS_FS_{LZ4,LZ4HZ,LZO,LZORLE,ZSTD} will make the (de)compressionalgorithms {LZ4,LZ4HC,LZO,ZSTD}_{,DE}COMPRESS builtin instead ofmodular, as the former depend on an intermediate booleanF2FS_FS_COMPRESSION, which in-turn depends on tristate F2FS_FS.Indeed, if a boolean symbol A depends directly on a tristate symbol Band selects another tristate symbol C: tristate B tristate C bool A depends on B select Cand B is modular, then C will also be modular.However, if there is an intermediate boolean D in the dependency chainbetween A and B: tristate B tristate C bool D depends on B bool A depends on D select Cthen the modular state won't propagate from B to C, and C will bebuiltin instead of modular.As modular dependency propagation through intermediate symbols isobscure, fix this in a robust way by moving the selection of tristate(de)compression algorithms from the boolean compression options to thetristate main F2FS_FS option.Signed-off-by: Geert Uytterhoeven Reviewed-by: Chao Yu Reviewed-by: Masahiro Yamada Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

d5f7bc00 - f2fs: deprecate f2fs_trace_io

Thu, 14 Jan 2021 21:59:09 +0000

f2fs: deprecate f2fs_trace_ioThis patch deprecates f2fs_trace_io, since f2fs uses page->private more broadly,resulting in more buggy cases.Acked-by: Chao Yu Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

3fde13f8 - f2fs: compress: support compress level

Fri, 22 Jan 2021 09:46:43 +0000

f2fs: compress: support compress levelExpand 'compress_algorithm' mount option to accept parameter as format of:, by this way, it gives a way to allow user to do morespecified config on lz4 and zstd compression level, then f2fs compressioncan provide higher compress ratio.In order to set compress level for lz4 algorithm, it needs to setCONFIG_LZ4HC_COMPRESS and CONFIG_F2FS_FS_LZ4HC config to enable lz4hccompress algorithm.CR and performance number on lz4/lz4hc algorithm:dd if=enwik9 of=compressed_file conv=fsyncOriginal blocks: 244382 lz4 lz4hc-9compressed blocks 170647 163270compress ratio 69.8% 66.8%speed 16.4207 s, 60.9 MB/s 26.7299 s, 37.4 MB/scompress ratio = after / beforeSigned-off-by: Chao Yu Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

6d92b201 - f2fs: compress: support lzo-rle compress algorithm

Wed, 08 Apr 2020 11:56:32 +0000

f2fs: compress: support lzo-rle compress algorithmLZO-RLE extension (run length encoding) was introduced to improveperformance of LZO algorithm in scenario of data contains many zeros,zram has changed to use this extended algorithm by default, thispatch adds to support this algorithm extension, to enable thisextension, it needs to enable F2FS_FS_LZO and F2FS_FS_LZORLE config,and specifies "compress_algorithm=lzo-rle" mountoption.Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

50cfa66f - f2fs: compress: support zstd compress algorithm

Tue, 03 Mar 2020 09:46:02 +0000

f2fs: compress: support zstd compress algorithmAdd zstd compress algorithm support, use "compress_algorithm=zstd"mountoption to enable it.Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

fc7100ea - f2fs: Add f2fs stats to sysfs

Wed, 22 Jan 2020 18:51:16 +0000

f2fs: Add f2fs stats to sysfsCurrently f2fs stats are only available from /d/f2fs/status. This patchadds some of the f2fs stats to sysfs so that they are accessible evenwhen debugfs is not mounted.The following sysfs nodes are added:-/sys/fs/f2fs//free_segments-/sys/fs/f2fs//cp_foreground_calls-/sys/fs/f2fs//cp_background_calls-/sys/fs/f2fs//gc_foreground_calls-/sys/fs/f2fs//gc_background_calls-/sys/fs/f2fs//moved_blocks_foreground-/sys/fs/f2fs//moved_blocks_background-/sys/fs/f2fs//avg_vblocksSigned-off-by: Hridya Valsaraju [Jaegeuk Kim: allow STAT_FS without DEBUG_FS]Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

4c8ff709 - f2fs: support data compression

Fri, 01 Nov 2019 10:07:14 +0000

f2fs: support data compressionThis patch tries to support compression in f2fs.- New term named cluster is defined as basic unit of compression, file canbe divided into multiple clusters logically. One cluster includes 4 << n(n >= 0) logical pages, compression size is also cluster size, each ofcluster can be compressed or not.- In cluster metadata layout, one special flag is used to indicate clusteris compressed one or normal one, for compressed cluster, following metadatamaps cluster to [1, 4 << n - 1] physical blocks, in where f2fs storesdata including compress header and compressed data.- In order to eliminate write amplification during overwrite, F2FS onlysupport compression on write-once file, data can be compressed only whenall logical blocks in file are valid and cluster compress ratio is lowerthan specified threshold.- To enable compression on regular inode, there are three ways:* chattr +c file* chattr +c dir; touch dir/file* mount w/ -o compress_extension=ext; touch file.extCompress metadata layout: [Dnode Structure] +-----------------------------------------------+ | cluster 1 | cluster 2 | ......... | cluster N | +-----------------------------------------------+ . . . . . . . . . Compressed Cluster . . Normal Cluster .+----------+---------+---------+---------+ +---------+---------+---------+---------+|compr flag| block 1 | block 2 | block 3 | | block 1 | block 2 | block 3 | block 4 |+----------+---------+---------+---------+ +---------+---------+---------+---------+ . . . . . . +-------------+-------------+----------+----------------------------+ | data length | data chksum | reserved | compressed data | +-------------+-------------+----------+----------------------------+Changelog:20190326:- fix error handling of read_end_io().- remove unneeded comments in f2fs_encrypt_one_page().20190327:- fix wrong use of f2fs_cluster_is_full() in f2fs_mpage_readpages().- don't jump into loop directly to avoid uninitialized variables.- add TODO tag in error path of f2fs_write_cache_pages().20190328:- fix wrong merge condition in f2fs_read_multi_pages().- check compressed file in f2fs_post_read_required().20190401- allow overwrite on non-compressed cluster.- check cluster meta before writing compressed data.20190402- don't preallocate blocks for compressed file.- add lz4 compress algorithm- process multiple post read works in one workqueue Now f2fs supports processing post read work in multiple workqueue, it shows low performance due to schedule overhead of multiple workqueue executing orderly.20190921- compress: support buffered overwriteC: compress cluster flagV: valid block addressN: NEW_ADDROne cluster contain 4 blocks before overwrite after overwrite- VVVV -> CVNN- CVNN -> VVVV- CVNN -> CVNN- CVNN -> CVVV- CVVV -> CVNN- CVVV -> CVVV20191029- add kconfig F2FS_FS_COMPRESSION to isolate compression relatedcodes, add kconfig F2FS_FS_{LZO,LZ4} to cover backend algorithm.note that: will remove lzo backend if Jaegeuk agreed that too.- update codes according to Eric's comments.20191101- apply fixes from Jaegeuk20191113- apply fixes from Jaegeuk- split workqueue for fsverity20191216- apply fixes from Jaegeuk20200117- fix to avoid NULL pointer dereference[Jaegeuk Kim]- add tracepoint for f2fs_{,de}compress_pages()- fix many bugs and add some compression stats- fix overwrite/mmap bugs- address 32bit build error, reported by Geert.- bug fixes when handling errors and i_compressed_blocksReported-by: Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

ede7a09f - fscrypt: Allow modular crypto algorithms

Fri, 27 Dec 2019 02:47:00 +0000

fscrypt: Allow modular crypto algorithmsThe commit 643fa9612bf1 ("fscrypt: remove filesystem specificbuild config option") removed modular support for fs/crypto. Thiscauses the Crypto API to be built-in whenever fscrypt is enabled.This makes it very difficult for me to test modular builds ofthe Crypto API without disabling fscrypt which is a pain.As fscrypt is still evolving and it's developing new ties with thefs layer, it's hard to build it as a module for now.However, the actual algorithms are not required until a filesystemis mounted. Therefore we can allow them to be built as modules.Signed-off-by: Herbert Xu Link: https://lore.kernel.org/r/20191227024700.7vrzuux32uyfdgum@gondor.apana.org.auSigned-off-by: Eric Biggers List of files: /linux-6.15/fs/f2fs/Kconfig

bd7253bc - f2fs: Add a small clarification to CONFIG_FS_F2FS_FS_SECURITY

Sun, 25 Aug 2019 09:28:38 +0000

f2fs: Add a small clarification to CONFIG_FS_F2FS_FS_SECURITYSigned-off-by: Lockywolf Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

aabc172b - f2fs: Fix build error while CONFIG_NLS=m

Thu, 08 Aug 2019 02:02:53 +0000

f2fs: Fix build error while CONFIG_NLS=mIf CONFIG_F2FS_FS=y but CONFIG_NLS=m, building fails:fs/f2fs/file.o: In function `f2fs_ioctl':file.c:(.text+0xb86f): undefined reference to `utf16s_to_utf8s'file.c:(.text+0xe651): undefined reference to `utf8s_to_utf16s'Select CONFIG_NLS to fix this.Reported-by: Hulk Robot Fixes: 61a3da4d5ef8 ("f2fs: support FS_IOC_{GET,SET}FSLABEL")Signed-off-by: YueHaibing Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig

ec8f24b7 - treewide: Add SPDX license identifier - Makefile/Kconfig

Sun, 19 May 2019 12:07:45 +0000

treewide: Add SPDX license identifier - Makefile/KconfigAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0-onlySigned-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/fs/f2fs/Kconfig

643fa961 - fscrypt: remove filesystem specific build config option

Wed, 12 Dec 2018 09:50:12 +0000

fscrypt: remove filesystem specific build config optionIn order to have a common code base for fscrypt "post read" processingfor all filesystems which support encryption, this commit removesfilesystem specific build config option (e.g. CONFIG_EXT4_FS_ENCRYPTION)and replaces it with a build option (i.e. CONFIG_FS_ENCRYPTION) whosevalue affects all the filesystems making use of fscrypt.Reviewed-by: Eric Biggers Signed-off-by: Chandan Rajendra Signed-off-by: Eric Biggers List of files: /linux-6.15/fs/f2fs/Kconfig

91581e4c - fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at

Wed, 20 Dec 2017 13:58:52 +0000

fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.atThis link is replicated in most filesystems' config stanzas. Referringto an archived version of that site is pointless as it mostly deals withpatches; user documentation is available elsewhere.Signed-off-by: Adam Borowski CC: Alexander Viro Reviewed-by: Darrick J. Wong Acked-by: Jan Kara Acked-by: Dave Kleikamp Acked-by: David Sterba Acked-by: "Yan, Zheng" Acked-by: Chao Yu Acked-by: Jaegeuk Kim Acked-by: Steve French Signed-off-by: Jonathan Corbet List of files: /linux-6.15/fs/f2fs/Kconfig

73faec4d - f2fs: add mount option to select fault injection ratio

Fri, 29 Apr 2016 22:34:32 +0000

f2fs: add mount option to select fault injection ratioThis patch adds a mount option to select fault ratio.Signed-off-by: Jaegeuk Kim List of files: /linux-6.15/fs/f2fs/Kconfig