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925c86a1 |
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01-Aug-2023 |
Christoph Hellwig <hch@lst.de> |
fs: add CONFIG_BUFFER_HEAD Add a new config option that controls building the buffer_head code, and select it from all file systems and stacking drivers that need it. For the block device nodes and alternative iomap based buffered I/O path is provided when buffer_head support is not enabled, and iomap needs a a small tweak to define the IOMAP_F_BUFFER_HEAD flag to 0 to not call into the buffer_head code when it doesn't exist. Otherwise this is just Kconfig and ifdef changes. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20230801172201.1923299-7-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
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#
7f8e249d |
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03-Mar-2022 |
Jaegeuk Kim <jaegeuk@kernel.org> |
f2fs: introduce F2FS_UNFAIR_RWSEM to support unfair rwsem Unfair 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 master in testcase: aim7 on test machine: 88 threads 2 sockets Intel(R) Xeon(R) Gold 6238M CPU @ 2.10GHz with 128G memory with following parameters: disk: 4BRD_12G md: RAID0 fs: f2fs test: sync_disk_rw load: 100 cpufreq_governor: performance ucode: 0x500320a test-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 <oliver.sang@intel.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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1517c1a7 |
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23-Jul-2021 |
Eric Biggers <ebiggers@google.com> |
f2fs: implement iomap operations Implement 'struct iomap_ops' for f2fs, in preparation for making f2fs use iomap for direct I/O. Note that this may be used for other things besides direct I/O in the future; however, for now I've only tested it for direct I/O. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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52118743 |
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19-Aug-2021 |
Daeho Jeong <daehojeong@google.com> |
f2fs: separate out iostat feature Added F2FS_IOSTAT config option to support getting IO statistics through sysfs and printing out periodic IO statistics tracepoint events and moved I/O statistics related codes into separate files for better maintenance. Signed-off-by: Daeho Jeong <daehojeong@google.com> Reviewed-by: Chao Yu <chao@kernel.org> [Jaegeuk Kim: set default=y] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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6b3ba1e7 |
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05-Aug-2021 |
Tiezhu Yang <yangtiezhu@loongson.cn> |
f2fs: Kconfig: clean up config options about compression In fs/f2fs/Kconfig, F2FS_FS_LZ4HC depends on F2FS_FS_LZ4 and F2FS_FS_LZ4 depends on F2FS_FS_COMPRESSION, so no need to make F2FS_FS_LZ4HC depends on F2FS_FS_COMPRESSION explicitly, remove the redudant "depends on", do the 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" instead of "F2FS compression feature". Without this patch: F2FS compression feature LZO compression support LZ4 compression support LZ4HC compression support ZSTD compression support LZO-RLE compression support With this patch: F2FS compression feature LZO compression support LZO-RLE compression support LZ4 compression support LZ4HC compression support ZSTD compression support Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
72f85881 |
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26-Feb-2021 |
Geert Uytterhoeven <geert@linux-m68k.org> |
f2fs: compress: Allow modular (de)compression algorithms If F2FS_FS is modular, enabling the compressions options F2FS_FS_{LZ4,LZ4HZ,LZO,LZORLE,ZSTD} will make the (de)compression algorithms {LZ4,LZ4HC,LZO,ZSTD}_{,DE}COMPRESS builtin instead of modular, as the former depend on an intermediate boolean F2FS_FS_COMPRESSION, which in-turn depends on tristate F2FS_FS. Indeed, if a boolean symbol A depends directly on a tristate symbol B and selects another tristate symbol C: tristate B tristate C bool A depends on B select C and B is modular, then C will also be modular. However, if there is an intermediate boolean D in the dependency chain between A and B: tristate B tristate C bool D depends on B bool A depends on D select C then the modular state won't propagate from B to C, and C will be builtin instead of modular. As modular dependency propagation through intermediate symbols is obscure, fix this in a robust way by moving the selection of tristate (de)compression algorithms from the boolean compression options to the tristate main F2FS_FS option. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Chao Yu <yuchao0@huawei.com> Reviewed-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
d5f7bc00 |
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14-Jan-2021 |
Jaegeuk Kim <jaegeuk@kernel.org> |
f2fs: deprecate f2fs_trace_io This patch deprecates f2fs_trace_io, since f2fs uses page->private more broadly, resulting in more buggy cases. Acked-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
3fde13f8 |
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22-Jan-2021 |
Chao Yu <chao@kernel.org> |
f2fs: compress: support compress level Expand 'compress_algorithm' mount option to accept parameter as format of <algorithm>:<level>, by this way, it gives a way to allow user to do more specified config on lz4 and zstd compression level, then f2fs compression can provide higher compress ratio. In order to set compress level for lz4 algorithm, it needs to set CONFIG_LZ4HC_COMPRESS and CONFIG_F2FS_FS_LZ4HC config to enable lz4hc compress algorithm. CR and performance number on lz4/lz4hc algorithm: dd if=enwik9 of=compressed_file conv=fsync Original blocks: 244382 lz4 lz4hc-9 compressed blocks 170647 163270 compress ratio 69.8% 66.8% speed 16.4207 s, 60.9 MB/s 26.7299 s, 37.4 MB/s compress ratio = after / before Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
6d92b201 |
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08-Apr-2020 |
Chao Yu <chao@kernel.org> |
f2fs: compress: support lzo-rle compress algorithm LZO-RLE extension (run length encoding) was introduced to improve performance of LZO algorithm in scenario of data contains many zeros, zram has changed to use this extended algorithm by default, this patch adds to support this algorithm extension, to enable this extension, it needs to enable F2FS_FS_LZO and F2FS_FS_LZORLE config, and specifies "compress_algorithm=lzo-rle" mountoption. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
50cfa66f |
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03-Mar-2020 |
Chao Yu <chao@kernel.org> |
f2fs: compress: support zstd compress algorithm Add zstd compress algorithm support, use "compress_algorithm=zstd" mountoption to enable it. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
fc7100ea |
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22-Jan-2020 |
Hridya Valsaraju <hridya@google.com> |
f2fs: Add f2fs stats to sysfs Currently f2fs stats are only available from /d/f2fs/status. This patch adds some of the f2fs stats to sysfs so that they are accessible even when debugfs is not mounted. The following sysfs nodes are added: -/sys/fs/f2fs/<disk>/free_segments -/sys/fs/f2fs/<disk>/cp_foreground_calls -/sys/fs/f2fs/<disk>/cp_background_calls -/sys/fs/f2fs/<disk>/gc_foreground_calls -/sys/fs/f2fs/<disk>/gc_background_calls -/sys/fs/f2fs/<disk>/moved_blocks_foreground -/sys/fs/f2fs/<disk>/moved_blocks_background -/sys/fs/f2fs/<disk>/avg_vblocks Signed-off-by: Hridya Valsaraju <hridya@google.com> [Jaegeuk Kim: allow STAT_FS without DEBUG_FS] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
4c8ff709 |
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01-Nov-2019 |
Chao Yu <chao@kernel.org> |
f2fs: support data compression This patch tries to support compression in f2fs. - New term named cluster is defined as basic unit of compression, file can be divided into multiple clusters logically. One cluster includes 4 << n (n >= 0) logical pages, compression size is also cluster size, each of cluster can be compressed or not. - In cluster metadata layout, one special flag is used to indicate cluster is compressed one or normal one, for compressed cluster, following metadata maps cluster to [1, 4 << n - 1] physical blocks, in where f2fs stores data including compress header and compressed data. - In order to eliminate write amplification during overwrite, F2FS only support compression on write-once file, data can be compressed only when all logical blocks in file are valid and cluster compress ratio is lower than 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.ext Compress 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 overwrite C: compress cluster flag V: valid block address N: NEW_ADDR One cluster contain 4 blocks before overwrite after overwrite - VVVV -> CVNN - CVNN -> VVVV - CVNN -> CVNN - CVNN -> CVVV - CVVV -> CVNN - CVVV -> CVVV 20191029 - add kconfig F2FS_FS_COMPRESSION to isolate compression related codes, 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 Jaegeuk 20191113 - apply fixes from Jaegeuk - split workqueue for fsverity 20191216 - apply fixes from Jaegeuk 20200117 - 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_blocks Reported-by: <noreply@ellerman.id.au> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
ede7a09f |
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26-Dec-2019 |
Herbert Xu <herbert@gondor.apana.org.au> |
fscrypt: Allow modular crypto algorithms The commit 643fa9612bf1 ("fscrypt: remove filesystem specific build config option") removed modular support for fs/crypto. This causes the Crypto API to be built-in whenever fscrypt is enabled. This makes it very difficult for me to test modular builds of the Crypto API without disabling fscrypt which is a pain. As fscrypt is still evolving and it's developing new ties with the fs layer, it's hard to build it as a module for now. However, the actual algorithms are not required until a filesystem is mounted. Therefore we can allow them to be built as modules. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Link: https://lore.kernel.org/r/20191227024700.7vrzuux32uyfdgum@gondor.apana.org.au Signed-off-by: Eric Biggers <ebiggers@google.com>
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#
bd7253bc |
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25-Aug-2019 |
Lockywolf <lockywolf@gmail.com> |
f2fs: Add a small clarification to CONFIG_FS_F2FS_FS_SECURITY Signed-off-by: Lockywolf <lockywolf@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
aabc172b |
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07-Aug-2019 |
YueHaibing <yuehaibing@huawei.com> |
f2fs: Fix build error while CONFIG_NLS=m If 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 <hulkci@huawei.com> Fixes: 61a3da4d5ef8 ("f2fs: support FS_IOC_{GET,SET}FSLABEL") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
ec8f24b7 |
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19-May-2019 |
Thomas Gleixner <tglx@linutronix.de> |
treewide: Add SPDX license identifier - Makefile/Kconfig Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
643fa961 |
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12-Dec-2018 |
Chandan Rajendra <chandan@linux.vnet.ibm.com> |
fscrypt: remove filesystem specific build config option In order to have a common code base for fscrypt "post read" processing for all filesystems which support encryption, this commit removes filesystem specific build config option (e.g. CONFIG_EXT4_FS_ENCRYPTION) and replaces it with a build option (i.e. CONFIG_FS_ENCRYPTION) whose value affects all the filesystems making use of fscrypt. Reviewed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com> Signed-off-by: Eric Biggers <ebiggers@google.com>
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91581e4c |
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20-Dec-2017 |
Adam Borowski <kilobyte@angband.pl> |
fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at This link is replicated in most filesystems' config stanzas. Referring to an archived version of that site is pointless as it mostly deals with patches; user documentation is available elsewhere. Signed-off-by: Adam Borowski <kilobyte@angband.pl> CC: Alexander Viro <viro@zeniv.linux.org.uk> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Acked-by: Jan Kara <jack@suse.cz> Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com> Acked-by: David Sterba <dsterba@suse.com> Acked-by: "Yan, Zheng" <zyan@redhat.com> Acked-by: Chao Yu <yuchao0@huawei.com> Acked-by: Jaegeuk Kim <jaegeuk@kernel.org> Acked-by: Steve French <smfrench@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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#
73faec4d |
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29-Apr-2016 |
Jaegeuk Kim <jaegeuk@kernel.org> |
f2fs: add mount option to select fault injection ratio This patch adds a mount option to select fault ratio. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
43b6573b |
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02-Mar-2016 |
Keith Mok <ek9852@gmail.com> |
f2fs: use cryptoapi crc32 functions The crc function is done bit by bit. Optimize this by use cryptoapi crc32 function which is backed by h/w acceleration. Signed-off-by: Keith Mok <ek9852@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
0b81d077 |
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15-May-2015 |
Jaegeuk Kim <jaegeuk@kernel.org> |
fs crypto: move per-file encryption from f2fs tree to fs/crypto This patch adds the renamed functions moved from the f2fs crypto files. 1. definitions for per-file encryption used by ext4 and f2fs. 2. crypto.c for encrypt/decrypt functions a. IO preparation: - fscrypt_get_ctx / fscrypt_release_ctx b. before IOs: - fscrypt_encrypt_page - fscrypt_decrypt_page - fscrypt_zeroout_range c. after IOs: - fscrypt_decrypt_bio_pages - fscrypt_pullback_bio_page - fscrypt_restore_control_page 3. policy.c supporting context management. a. For ioctls: - fscrypt_process_policy - fscrypt_get_policy b. For context permission - fscrypt_has_permitted_context - fscrypt_inherit_context 4. keyinfo.c to handle permissions - fscrypt_get_encryption_info - fscrypt_free_encryption_info 5. fname.c to support filename encryption a. general wrapper functions - fscrypt_fname_disk_to_usr - fscrypt_fname_usr_to_disk - fscrypt_setup_filename - fscrypt_free_filename b. specific filename handling functions - fscrypt_fname_alloc_buffer - fscrypt_fname_free_buffer 6. Makefile and Kconfig Cc: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Michael Halcrow <mhalcrow@google.com> Signed-off-by: Ildar Muslukhov <ildarm@google.com> Signed-off-by: Uday Savagaonkar <savagaon@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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#
217940d4 |
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18-Aug-2015 |
Junesung Lee <junesoung412@gmail.com> |
f2fs: fix typo Fix typo. Signed-off-by: Junesung Lee <junesoung412@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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d33793fb |
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10-Apr-2015 |
Jaegeuk Kim <jaegeuk@kernel.org> |
f2fs crypto: add f2fs encryption Kconfig This patch adds f2fs encryption config. This patch integrates: "ext4 crypto: require CONFIG_CRYPTO_CTR if ext4 encryption is enabled On arm64 this is apparently needed for CTS mode to function correctly. Otherwise attempts to use CTS return ENOENT." Signed-off-by: Michael Halcrow <mhalcrow@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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d7196c5a |
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03-Mar-2015 |
Jaegeuk Kim <jaegeuk@kernel.org> |
f2fs: relocate Kconfig from misc filesystems The f2fs has been shipped on many smartphone devices during a couple of years. So, it is worth to relocate Kconfig into main page from misc filesystems for developers to choose it more easily. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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63f92ddc |
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17-Dec-2014 |
Jaegeuk Kim <jaegeuk@kernel.org> |
f2fs: add f2fs_io_tracer support This patch adds: o initial trace.c and trace.h with skeleton functions o Kconfig and Makefile to activate this feature Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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e1c42045 |
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06-Aug-2014 |
arter97 <qkrwngud825@gmail.com> |
f2fs: fix typo Fix typo and some grammatical errors. The words "filesystem" and "readahead" are being used without the space treewide. Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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3b218e3a |
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29-Oct-2013 |
Jaegeuk Kim <jaegeuk@kernel.org> |
f2fs: introduce CONFIG_F2FS_CHECK_FS for BUG_ON control This config will support an option to remove so many BUG_ONs that degrade the performance potentially. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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8ae8f162 |
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03-Jun-2013 |
Jaegeuk Kim <jaegeuk@kernel.org> |
f2fs: support xattr security labels This patch adds the support of security labels for f2fs, which will be used by Linus Security Models (LSMs). Quote from http://en.wikipedia.org/wiki/Linux_Security_Modules: "Linux Security Modules (LSM) is a framework that allows the Linux kernel to support a variety of computer security models while avoiding favoritism toward any single security implementation. The framework is licensed under the terms of the GNU General Public License and is standard part of the Linux kernel since Linux 2.6. AppArmor, SELinux, Smack and TOMOYO Linux are the currently accepted modules in the official kernel.". Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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#
573ea5fc |
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30-Nov-2012 |
Jaegeuk Kim <jaegeuk@kernel.org> |
f2fs: resolve build failures There exist two build failures reported by Randy Dunlap as follows. (on i386) a. (config-r8857) ERROR: "f2fs_xattr_advise_handler" [fs/f2fs/f2fs.ko] undefined! Key configs in (config-r8857) are as follows. CONFIG_F2FS_FS=m # CONFIG_F2FS_STAT_FS is not set CONFIG_F2FS_FS_XATTR=y # CONFIG_F2FS_FS_POSIX_ACL is not set The error was occurred due to the function location that we made a mistake. Recently we added a new functionality for users to indicate cold files explicitly through xattr operations (i.e., f2fs_xattr_advise_handler). This handler should have been added in xattr.c instead of acl.c in order to avoid an undefined operation like in this case where XATTR is set and ACL is not set. b. (config-r8855) fs/f2fs/file.c: In function 'f2fs_vm_page_mkwrite': fs/f2fs/file.c:97:2: error: implicit declaration of function 'block_page_mkwrite_return' Key config in (config-r8855) is CONFIG_BLOCK. Obviously, f2fs works on top of the block device so that we should consider carefully a sort of config dependencies. The reason why this error was occurred was that f2fs_vm_page_mkwrite() calls block_page_mkwrite_return() which is enalbed only if CONFIG_BLOCK is set. Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net>
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#
a14d5393 |
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02-Nov-2012 |
Jaegeuk Kim <jaegeuk@kernel.org> |
f2fs: update Kconfig and Makefile This adds Makefile and Kconfig for f2fs, and updates Makefile and Kconfig files in the fs directory. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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