summaryrefslogtreecommitdiff
path: root/fs/bcachefs/Kconfig
AgeCommit message (Collapse)AuthorFilesLines
2025-02-13bcachefs: CONFIG_BCACHEFS_INJECT_TRANSACTION_RESTARTSKent Overstreet1-0/+7
Incorrectly handled transaction restarts can be a source of heisenbugs; add a mode where we randomly inject them to shake them out. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2025-01-23Merge tag 'crc-for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux Pull CRC updates from Eric Biggers: - Reorganize the architecture-optimized CRC32 and CRC-T10DIF code to be directly accessible via the library API, instead of requiring the crypto API. This is much simpler and more efficient. - Convert some users such as ext4 to use the CRC32 library API instead of the crypto API. More conversions like this will come later. - Add a KUnit test that tests and benchmarks multiple CRC variants. Remove older, less-comprehensive tests that are made redundant by this. - Add an entry to MAINTAINERS for the kernel's CRC library code. I'm volunteering to maintain it. I have additional cleanups and optimizations planned for future cycles. * tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (31 commits) MAINTAINERS: add entry for CRC library powerpc/crc: delete obsolete crc-vpmsum_test.c lib/crc32test: delete obsolete crc32test.c lib/crc16_kunit: delete obsolete crc16_kunit.c lib/crc_kunit.c: add KUnit test suite for CRC library functions powerpc/crc-t10dif: expose CRC-T10DIF function through lib arm64/crc-t10dif: expose CRC-T10DIF function through lib arm/crc-t10dif: expose CRC-T10DIF function through lib x86/crc-t10dif: expose CRC-T10DIF function through lib crypto: crct10dif - expose arch-optimized lib function lib/crc-t10dif: add support for arch overrides lib/crc-t10dif: stop wrapping the crypto API scsi: target: iscsi: switch to using the crc32c library f2fs: switch to using the crc32 library jbd2: switch to using the crc32c library ext4: switch to using the crc32c library lib/crc32: make crc32c() go directly to lib bcachefs: Explicitly select CRYPTO from BCACHEFS_FS x86/crc32: expose CRC32 functions through lib x86/crc32: update prototype for crc32_pclmul_le_16() ...
2024-12-21bcachefs: BCACHEFS_PATH_TRACEPOINTS should depend on TRACINGGeert Uytterhoeven1-1/+1
When tracing is disabled, there is no point in asking the user about enabling extra btree_path tracepoints in bcachefs. Fixes: 32ed4a620c5405be ("bcachefs: Btree path tracepoints") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-12-02bcachefs: Explicitly select CRYPTO from BCACHEFS_FSEric Biggers1-0/+1
Explicitly select CRYPTO from BCACHEFS_FS, so that this dependency of CRYPTO_SHA256, CRYPTO_CHACHA20, and CRYPTO_POLY1305 (which are also selected) is satisfied. Currently this dependency is satisfied indirectly via LIBCRC32C, but this is fragile and is planned to change (https://lore.kernel.org/r/20241021002935.325878-13-ebiggers@kernel.org). Acked-by: Kent Overstreet <kent.overstreet@linux.dev> Link: https://lore.kernel.org/r/20241202010844.144356-15-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com>
2024-11-06lib/min_heap: introduce non-inline versions of min heap API functionsKuan-Wei Chiu1-0/+1
Patch series "Enhance min heap API with non-inline functions and optimizations", v2. Add non-inline versions of the min heap API functions in lib/min_heap.c and updates all users outside of kernel/events/core.c to use these non-inline versions. To mitigate the performance impact of indirect function calls caused by the non-inline versions of the swap and compare functions, a builtin swap has been introduced that swaps elements based on their size. Additionally, it micro-optimizes the efficiency of the min heap by pre-scaling the counter, following the same approach as in lib/sort.c. Documentation for the min heap API has also been added to the core-api section. This patch (of 10): All current min heap API functions are marked with '__always_inline'. However, as the number of users increases, inlining these functions everywhere leads to a increase in kernel size. In performance-critical paths, such as when perf events are enabled and min heap functions are called on every context switch, it is important to retain the inline versions for optimal performance. To balance this, the original inline functions are kept, and additional non-inline versions of the functions have been added in lib/min_heap.c. Link: https://lkml.kernel.org/r/20241020040200.939973-1-visitorckw@gmail.com Link: https://lore.kernel.org/20240522161048.8d8bbc7b153b4ecd92c50666@linux-foundation.org Link: https://lkml.kernel.org/r/20241020040200.939973-2-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Coly Li <colyli@suse.de> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: "Liang, Kan" <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Sakai <msakai@redhat.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-09-09bcachefs: Btree path tracepointsKent Overstreet1-0/+7
Fastpath tracepoints, rarely needed, only enabled with CONFIG_BCACHEFS_PATH_TRACEPOINTS. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-01-01bcachefs: optimize __bch2_trans_get(), kill DEBUG_TRANSACTIONSKent Overstreet1-8/+0
- Some tweaks to greatly reduce locking overhead for the list of btree transactions, so that it can always be enabled: leave btree_trans objects on the list when they're on the percpu single item freelist, and only check for duplicates in the same process when CONFIG_BCACHEFS_DEBUG is enabled - don't zero out the full btree_trans() unless we allocated it from the mempool Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-01-01bcachefs: six locks: Simplify optimistic spinningKent Overstreet1-0/+10
osq lock maintainers don't want it to be used outside of kernel/locking/ - but, we can do better. Since we have lock handoff signalled via waitlist entries, there's no reason for optimistic spinning to have to look at the lock at all - aside from checking lock-owner; we can just spin looking at our waitlist entry. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-11-24bcachefs: Put erasure coding behind an EXPERIMENTAL kconfig optionKent Overstreet1-0/+12
We still have disk space accounting changes coming for erasure coding, and the changes won't be as strictly backwards compatible as they'd ought to be - specifically, we need to start accounting striped data under a separate counter in bch_alloc (which describes buckets). A fsck will suffice for upgrading/downgrading, but since erasure coding is the most incomplete major feature of bcachefs it still makes sense to put behind a separate kconfig option, so that users are fully aware. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-11-05bcachefs: CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to yKent Overstreet1-1/+0
BCACHEFS_DEBUG_TRANSACTIONS is useful, but it's too expensive to have on by default - and it hasn't been coming up in bug reports. Turn it off by default until we figure out a way to make it cheaper. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-11-04bcachefs: Fix MEAN_AND_VARIANCE kconfig optionsKent Overstreet1-2/+1
Fixes: https://lore.kernel.org/linux-bcachefs/CAMuHMdXpwMdLuoWsNGa8qacT_5Wv-vSTz0xoBR5n_fnD9cNOuQ@mail.gmail.com/ Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Compression levelsKent Overstreet1-0/+2
This allows including a compression level when specifying a compression type, e.g. compression=zstd:15 Values from 1 through 15 indicate compression levels, 0 or unspecified indicates the default. For LZ4, values 3-15 specify that the HC algorithm should be used. Note that for compatibility, extents themselves only include the compression type, not the compression level. This means that specifying the same compression algorithm but different compression levels for the compression and background_compression options will have no effect. XXX: perhaps we could add a warning for this Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Mark as EXPERIMENTALKent Overstreet1-1/+1
As discussed on list, bcachefs is going to be marked as experimental for a few releases, until the inevitable tide of new bug reports subsides. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: time stats now uses the mean_and_variance module.Daniel Hill1-0/+1
Signed-off-by: Daniel Hill <daniel@gluo.nz> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Mean and varianceDaniel Hill1-0/+9
This module provides a fast 64bit implementation of basic statistics functions, including mean, variance and standard deviation in both weighted and unweighted variants, the unweighted variant has a 32bit limitation per sample to prevent overflow when squaring. Signed-off-by: Daniel Hill <daniel@gluo.nz> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Improved errcodesKent Overstreet1-0/+1
Instead of overloading standard error codes (EINTR/EAGAIN), and defining short lists of error codes in multiple places that potentially end up overlapping & conflicting, we're now going to have one master list of error codes. Error codes are defined with an x-macro: thus we also have bch2_err_str() now. Also, error codes have a class field. Now, instead of checking for errors with ==, code should use bch2_err_matches(), which returns true if the error is equal to or a sub-error of the error class. This means we can define unique errors for every source location where an error is generated, which will help improve our error messages. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: added lock held time statsDaniel Hill1-0/+6
We now record the length of time btree locks are held and expose this in debugfs. Enabled via CONFIG_BCACHEFS_LOCK_TIME_STATS. Signed-off-by: Daniel Hill <daniel@gluo.nz> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Split out CONFIG_BCACHEFS_DEBUG_TRANSACTIONSKent Overstreet1-0/+9
This puts the btree_transactions sysfs/debugfs file behind a separate config option - it's highly useful, but not cheap enough to enable permenantly. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: add bcachefs xxhash supportjpsollie1-0/+1
xxhash is a much faster algorithm compared to crc32. could be used to speed up checksum calculation. xxhash 64-bit only, as it is much faster on 64-bit CPUs compared to xxh32. Signed-off-by: jpsollie <janpieter.sollie@edpnet.be> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Take a SRCU lock in btree transactionsKent Overstreet1-0/+1
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: use crc64 from lib/Kent Overstreet1-0/+1
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Erasure codingKent Overstreet1-0/+2
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Initial commitKent Overstreet1-0/+52
Initially forked from drivers/md/bcache, bcachefs is a new copy-on-write filesystem with every feature you could possibly want. Website: https://bcachefs.org Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
generated by cgit v1.2.3 (git 2.39.0) at 2025-03-14 10:47:37 +0300