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2023-11-07Merge tag 'bcachefs-2023-11-5' of https://evilpiepirate.org/git/bcachefsLinus Torvalds1-21/+24
Pull more bcachefs updates from Kent Overstreet: "Here's the second big bcachefs pull request. This brings your tree up to date with my master branch, which is what existing bcachefs users are currently running. New features: - rebalance_work btree (and metadata version 1.3): the rebalance thread no longer has to scan to find extents that need processing - big scalability improvement. - sb_errors superblock section: this adds counters for each fsck error type, since filesystem creation, along with the date of the most recent error. It'll get us better bug reports (since users do not typically report errors that fsck was able to fix), and I might add telemetry for this in the future. Fixes include: - multiple snapshot deletion fixes - members_v2 fixups - deleted_inodes btree fixes - copygc thread no longer spins when a device is full but has no fragmented buckets (i.e. rebalance needs to move data around instead) - a fix for a memory reclaim issue with the btree key cache: we're now careful not to hold the srcu read lock that blocks key cache reclaim for too long - an early allocator locking fix, from Brian - endianness fixes, from Brian - CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y, a big performance improvement on multithreaded workloads" * tag 'bcachefs-2023-11-5' of https://evilpiepirate.org/git/bcachefs: (70 commits) bcachefs: Improve stripe checksum error message bcachefs: Simplify, fix bch2_backpointer_get_key() bcachefs: kill thing_it_points_to arg to backpointer_not_found() bcachefs: bch2_ec_read_extent() now takes btree_trans bcachefs: bch2_stripe_to_text() now prints ptr gens bcachefs: Don't iterate over journal entries just for btree roots bcachefs: Break up bch2_journal_write() bcachefs: Replace ERANGE with private error codes bcachefs: bkey_copy() is no longer a macro bcachefs: x-macro-ify inode flags enum bcachefs: Convert bch2_fs_open() to darray bcachefs: Move __bch2_members_v2_get_mut to sb-members.h bcachefs: bch2_prt_datetime() bcachefs: CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y bcachefs: Add a comment for BTREE_INSERT_NOJOURNAL usage bcachefs: rebalance_work btree is not a snapshots btree bcachefs: Add missing printk newlines bcachefs: Fix recovery when forced to use JSET_NO_FLUSH journal entry bcachefs: .get_parent() should return an error pointer bcachefs: Fix bch2_delete_dead_inodes() ...
2023-11-03Merge tag 'mm-stable-2023-11-01-14-33' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: "Many singleton patches against the MM code. The patch series which are included in this merge do the following: - Kemeng Shi has contributed some compation maintenance work in the series 'Fixes and cleanups to compaction' - Joel Fernandes has a patchset ('Optimize mremap during mutual alignment within PMD') which fixes an obscure issue with mremap()'s pagetable handling during a subsequent exec(), based upon an implementation which Linus suggested - More DAMON/DAMOS maintenance and feature work from SeongJae Park i the following patch series: mm/damon: misc fixups for documents, comments and its tracepoint mm/damon: add a tracepoint for damos apply target regions mm/damon: provide pseudo-moving sum based access rate mm/damon: implement DAMOS apply intervals mm/damon/core-test: Fix memory leaks in core-test mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval - In the series 'Do not try to access unaccepted memory' Adrian Hunter provides some fixups for the recently-added 'unaccepted memory' feature. To increase the feature's checking coverage. 'Plug a few gaps where RAM is exposed without checking if it is unaccepted memory' - In the series 'cleanups for lockless slab shrink' Qi Zheng has done some maintenance work which is preparation for the lockless slab shrinking code - Qi Zheng has redone the earlier (and reverted) attempt to make slab shrinking lockless in the series 'use refcount+RCU method to implement lockless slab shrink' - David Hildenbrand contributes some maintenance work for the rmap code in the series 'Anon rmap cleanups' - Kefeng Wang does more folio conversions and some maintenance work in the migration code. Series 'mm: migrate: more folio conversion and unification' - Matthew Wilcox has fixed an issue in the buffer_head code which was causing long stalls under some heavy memory/IO loads. Some cleanups were added on the way. Series 'Add and use bdev_getblk()' - In the series 'Use nth_page() in place of direct struct page manipulation' Zi Yan has fixed a potential issue with the direct manipulation of hugetlb page frames - In the series 'mm: hugetlb: Skip initialization of gigantic tail struct pages if freed by HVO' has improved our handling of gigantic pages in the hugetlb vmmemmep optimizaton code. This provides significant boot time improvements when significant amounts of gigantic pages are in use - Matthew Wilcox has sent the series 'Small hugetlb cleanups' - code rationalization and folio conversions in the hugetlb code - Yin Fengwei has improved mlock()'s handling of large folios in the series 'support large folio for mlock' - In the series 'Expose swapcache stat for memcg v1' Liu Shixin has added statistics for memcg v1 users which are available (and useful) under memcg v2 - Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable) prctl so that userspace may direct the kernel to not automatically propagate the denial to child processes. The series is named 'MDWE without inheritance' - Kefeng Wang has provided the series 'mm: convert numa balancing functions to use a folio' which does what it says - In the series 'mm/ksm: add fork-exec support for prctl' Stefan Roesch makes is possible for a process to propagate KSM treatment across exec() - Huang Ying has enhanced memory tiering's calculation of memory distances. This is used to permit the dax/kmem driver to use 'high bandwidth memory' in addition to Optane Data Center Persistent Memory Modules (DCPMM). The series is named 'memory tiering: calculate abstract distance based on ACPI HMAT' - In the series 'Smart scanning mode for KSM' Stefan Roesch has optimized KSM by teaching it to retain and use some historical information from previous scans - Yosry Ahmed has fixed some inconsistencies in memcg statistics in the series 'mm: memcg: fix tracking of pending stats updates values' - In the series 'Implement IOCTL to get and optionally clear info about PTEs' Peter Xu has added an ioctl to /proc/<pid>/pagemap which permits us to atomically read-then-clear page softdirty state. This is mainly used by CRIU - Hugh Dickins contributed the series 'shmem,tmpfs: general maintenance', a bunch of relatively minor maintenance tweaks to this code - Matthew Wilcox has increased the use of the VMA lock over file-backed page faults in the series 'Handle more faults under the VMA lock'. Some rationalizations of the fault path became possible as a result - In the series 'mm/rmap: convert page_move_anon_rmap() to folio_move_anon_rmap()' David Hildenbrand has implemented some cleanups and folio conversions - In the series 'various improvements to the GUP interface' Lorenzo Stoakes has simplified and improved the GUP interface with an eye to providing groundwork for future improvements - Andrey Konovalov has sent along the series 'kasan: assorted fixes and improvements' which does those things - Some page allocator maintenance work from Kemeng Shi in the series 'Two minor cleanups to break_down_buddy_pages' - In thes series 'New selftest for mm' Breno Leitao has developed another MM self test which tickles a race we had between madvise() and page faults - In the series 'Add folio_end_read' Matthew Wilcox provides cleanups and an optimization to the core pagecache code - Nhat Pham has added memcg accounting for hugetlb memory in the series 'hugetlb memcg accounting' - Cleanups and rationalizations to the pagemap code from Lorenzo Stoakes, in the series 'Abstract vma_merge() and split_vma()' - Audra Mitchell has fixed issues in the procfs page_owner code's new timestamping feature which was causing some misbehaviours. In the series 'Fix page_owner's use of free timestamps' - Lorenzo Stoakes has fixed the handling of new mappings of sealed files in the series 'permit write-sealed memfd read-only shared mappings' - Mike Kravetz has optimized the hugetlb vmemmap optimization in the series 'Batch hugetlb vmemmap modification operations' - Some buffer_head folio conversions and cleanups from Matthew Wilcox in the series 'Finish the create_empty_buffers() transition' - As a page allocator performance optimization Huang Ying has added automatic tuning to the allocator's per-cpu-pages feature, in the series 'mm: PCP high auto-tuning' - Roman Gushchin has contributed the patchset 'mm: improve performance of accounted kernel memory allocations' which improves their performance by ~30% as measured by a micro-benchmark - folio conversions from Kefeng Wang in the series 'mm: convert page cpupid functions to folios' - Some kmemleak fixups in Liu Shixin's series 'Some bugfix about kmemleak' - Qi Zheng has improved our handling of memoryless nodes by keeping them off the allocation fallback list. This is done in the series 'handle memoryless nodes more appropriately' - khugepaged conversions from Vishal Moola in the series 'Some khugepaged folio conversions'" [ bcachefs conflicts with the dynamically allocated shrinkers have been resolved as per Stephen Rothwell in https://lore.kernel.org/all/20230913093553.4290421e@canb.auug.org.au/ with help from Qi Zheng. The clone3 test filtering conflict was half-arsed by yours truly ] * tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (406 commits) mm/damon/sysfs: update monitoring target regions for online input commit mm/damon/sysfs: remove requested targets when online-commit inputs selftests: add a sanity check for zswap Documentation: maple_tree: fix word spelling error mm/vmalloc: fix the unchecked dereference warning in vread_iter() zswap: export compression failure stats Documentation: ubsan: drop "the" from article title mempolicy: migration attempt to match interleave nodes mempolicy: mmap_lock is not needed while migrating folios mempolicy: alloc_pages_mpol() for NUMA policy without vma mm: add page_rmappable_folio() wrapper mempolicy: remove confusing MPOL_MF_LAZY dead code mempolicy: mpol_shared_policy_init() without pseudo-vma mempolicy trivia: use pgoff_t in shared mempolicy tree mempolicy trivia: slightly more consistent naming mempolicy trivia: delete those ancient pr_debug()s mempolicy: fix migrate_pages(2) syscall return nr_failed kernfs: drop shared NUMA mempolicy hooks hugetlbfs: drop shared NUMA mempolicy pretence mm/damon/sysfs-test: add a unit test for damon_sysfs_set_targets() ...
2023-11-02bcachefs: Add IO error counts to bch_memberKent Overstreet1-5/+15
We now track IO errors per device since filesystem creation. IO error counts can be viewed in sysfs, or with the 'bcachefs show-super' command. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-11-02bcachefs: rebalance_workKent Overstreet1-8/+6
This adds a new btree, rebalance_work, to eliminate scanning required for finding extents that need work done on them in the background - i.e. for the background_target and background_compression options. rebalance_work is a bitset btree, where a KEY_TYPE_set corresponds to an extent in the extents or reflink btree at the same pos. A new extent field is added, bch_extent_rebalance, which indicates that this extent has work that needs to be done in the background - and which options to use. This allows per-inode options to be propagated to indirect extents - at least in some circumstances. In this patch, changing IO options on a file will not propagate the new options to indirect extents pointed to by that file. Updating (setting/clearing) the rebalance_work btree is done by the extent trigger, which looks at the bch_extent_rebalance field. Scanning is still requrired after changing IO path options - either just for a given inode, or for the whole filesystem. We indicate that scanning is required by adding a KEY_TYPE_cookie key to the rebalance_work btree: the cookie counter is so that we can detect that scanning is still required when an option has been flipped mid-way through an existing scan. Future possible work: - Propagate options to indirect extents when being changed - Add other IO path options - nr_replicas, ec, to rebalance_work so they can be applied in the background when they change - Add a counter, for bcachefs fs usage output, showing the pending amount of rebalance work: we'll probably want to do this after the disk space accounting rewrite (moving it to a new btree) Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-31bcachefs: bch2_disk_path_to_text() no longer takes sb_lockKent Overstreet1-7/+2
We're going to be using bch2_target_to_text() -> bch2_disk_path_to_text() from bch2_bkey_ptrs_to_text() and bch2_bkey_ptrs_invalid(), which can be called in any context. This patch adds the actual label to bch_disk_group_cpu so that it can be used by bch2_disk_path_to_text, and splits out bch2_disk_path_to_text() into two variants - like the previous patch, one for when we have a running filesystem and another for when we only have a superblock. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-31bcachefs: bch2_btree_id_str()Kent Overstreet1-1/+1
Since we can run with unknown btree IDs, we can't directly index btree IDs into fixed size arrays. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: New superblock section members_v2Hunter Shaffer1-2/+2
members_v2 has dynamically resizable entries so that we can extend bch_member. The members can no longer be accessed with simple array indexing Instead members_v2_get is used to find a member's exact location within the array and returns a copy of that member. Alternatively member_v2_get_mut retrieves a mutable point to a member. Signed-off-by: Hunter Shaffer <huntershaffer182456@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Fix changing durability using sysfsTorge Matthies1-1/+1
Signed-off-by: Torge Matthies <openglfreak@googlemail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Heap allocate btree_transKent Overstreet1-5/+5
We're using more stack than we'd like in a number of functions, and btree_trans is the biggest object that we stack allocate. But we have to do a heap allocatation to initialize it anyways, so there's no real downside to heap allocating the entire thing. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Fix W=12 build errorsKent Overstreet1-29/+1
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Improve bch2_moving_ctxt_to_text()Kent Overstreet1-5/+0
Print more information out about moving contexts - fold in the output of the redundant bch2_data_jobs_to_text(), and also include information relevant to whether move_data() should be blocked. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Assorted sparse fixesKent Overstreet1-1/+1
- endianness fixes - mark some things static - fix a few __percpu annotations - fix silent enum conversions Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Rename enum alloc_reserve -> bch_watermarkKent Overstreet1-2/+2
This is prep work for consolidating with JOURNAL_WATERMARK. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: seqmutex; fix a lockdep splatKent Overstreet1-2/+2
We can't be holding btree_trans_lock while copying to user space, which might incur a page fault. To fix this, convert it to a seqmutex so we can unlock/relock. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: create internal disk_groups sysfs fileBrian Foster1-0/+6
We have bch2_sb_disk_groups_to_text() to dump disk group labels, but no good information on device group membership at runtime. Add bch2_disk_groups_to_text() and an associated 'disk_groups' sysfs file to print group and device relationships. Signed-off-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Print out counters correctlyKent Overstreet1-2/+2
Most counters aren't in units of sectors, and the ones that are should just be switched to bytes, for simplicity. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: bch2_fs_moving_ctxts_to_text()Kent Overstreet1-20/+6
This also adds bch2_write_op_to_text(): now we can see outstand moves, useful for debugging shutdown with the upcoming BCH_WRITE_WAIT_FOR_EC and likely for other things in the future. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Improve dev_alloc_debug_to_text()Kent Overstreet1-32/+94
Now we also print the number of buckets reserved for each watermark. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: bch2_copygc_wait_to_text()Kent Overstreet1-3/+4
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: bch2_open_bucket_to_text()Kent Overstreet1-0/+5
Factor out a common helper Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Improved nocow lockingKent Overstreet1-16/+3
This improves the nocow lock table so that hash table entries have multiple locks, and locks specify which bucket they're for - i.e. we can now resolve hash collisions. This is important because the allocator has to skip buckets that are locked in the nocow lock table, and previously hash collisions would cause it to spuriously skip unlocked buckets. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: expose nocow_lock table in sysfsDaniel Hill1-0/+19
Signed-off-by: Daniel Hill <daniel@gluo.nz> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Debug mode for c->writes referencesKent Overstreet1-2/+33
This adds a debug mode where we split up the c->writes refcount into distinct refcounts for every codepath that takes a reference, and adds sysfs code to print the value of each ref. This will make it easier to debug shutdown hangs due to refcount leaks. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: More style fixesKent Overstreet1-5/+7
Fixes for various checkpatch errors. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Improved btree write statisticsKent Overstreet1-11/+5
This replaces sysfs btree_avg_write_size with btree_write_stats, which now breaks out statistics by the source of the btree write. Btree writes that are too small are a source of inefficiency, and excessive btree resort overhead - this will let us see what's causing them. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: make durability a read-write sysfs optionDaniel Hill1-1/+14
Sometimes the user may need to change durability after formatting to match current hardware setup, this option provides a quick and flexible alternative to removing then adding the device. It is HIGHLY ADVISED TO RUN REREPLICATE after changing this value so the system doesn't remain degraded. Signed-off-by: Daniel Hill <daniel@gluo.nz> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Use btree_type_has_ptrs() more consistentlyKent Overstreet1-1/+1
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Errcodes can now subtype standard error codesKent Overstreet1-3/+12
The next patch is going to be adding private error codes for all the places we return -ENOSPC. Additionally, this patch updates return paths at all module boundaries to call bch2_err_class(), to return the standard error code. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Add a manual trigger for lock wakeupsKent Overstreet1-0/+20
Spotted a lockup once that appeared to be a lost wakeup. Adding a manual trigger for lock wakeups will make it easy to tell if that's what it is next time it occurs. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Add persistent counters for all tracepointsKent Overstreet1-19/+0
Also, do some reorganizing/renaming, convert atomic counters in bch_fs to persistent counters, and add a few missing counters. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Always use percpu_ref_tryget_live() on c->writesKent Overstreet1-1/+1
If we're trying to get a ref and the refcount has been killed, it means we're doing an emergency shutdown - we always want tryget_live(). Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: Improve an error messageKent Overstreet1-5/+0
When inserting a key type that's not valid for a given btree, we should print out which btree we were inserting into. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Call bch2_do_invalidates() when going read writeKent Overstreet1-0/+7
Like bch2_do_discards(), we should check if this needs to be done when going rw. Also, add some sysfs code for debugging bucket invalidation. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: Printbuf reworkKent Overstreet1-49/+48
This converts bcachefs to the modern printbuf interface/implementation, synced with the version to be submitted upstream. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Add persistent countersDaniel Hill1-1/+46
This adds a new superblock field for persisting counters and adds a sysfs interface in counters/ exposing these counters. The superblock field is ignored by older versions letting us avoid an on disk version bump. Each sysfs file outputs a counter that tracks since filesystem creation and a counter for the current mount session. Signed-off-by: Daniel Hill <daniel@gluo.nz> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Ensure sysfs show fns print a newlineKent Overstreet1-0/+3
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: Fold bucket_state in to BCH_DATA_TYPES()Kent Overstreet1-7/+5
Previously, we were missing accounting for buckets in need_gc_gens and need_discard states. This matters because buckets in those states need other btree operations done before they can be used, so they can't be conuted when checking current number of free buckets against the allocation watermark. Also, we weren't directly counting free buckets at all. Now, data type 0 == BCH_DATA_free, and free buckets are counted; this means we can get rid of the separate (poorly defined) count of unavailable buckets. This is a new on disk format version, with upgrade and fsck required for the accounting changes. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: Add a sysfs attr for triggering discardsKent Overstreet1-0/+5
We're currently debugging an issue with discards not getting run; this patch adds a manual trigger so we can then watch the tracepoint while it runs. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: Kill allocator threads & freelistsKent Overstreet1-40/+7
Now that we have new persistent data structures for the allocator, this patch converts the allocator to use them. Now, foreground bucket allocation uses the freespace btree to find buckets to allocate, instead of popping buckets off the freelist. The background allocator threads are no longer needed and are deleted, as well as the allocator freelists. Now we only need background tasks for invalidating buckets containing cached data (when we are low on empty buckets), and for issuing discards. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Run btree updates after write out of write_pointKent Overstreet1-0/+5
In the write path, after the write to the block device(s) complete we have to punt to process context to do the btree update. Instead of using the work item embedded in op->cl, this patch switches to a per write-point work item. This helps with two different issues: - lock contention: btree updates to the same writepoint will (usually) be updating the same alloc keys - context switch overhead: when we're bottlenecked on btree updates, having a thread (running out of a work item) checking the write point for completed ops is cheaper than queueing up a new work item and waking up a kworker. In an arbitrary benchmark, 4k random writes with fio running inside a VM, this patch resulted in a 10% improvement in total iops. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: x-macroize alloc_reserve enumKent Overstreet1-2/+2
This makes an array of strings available, like our other enums. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Better superblock opt validationKent Overstreet1-1/+1
This moves validation of superblock options to bch2_sb_validate(), so they'll be checked in the write path as well. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: Check for rw before setting opts via sysfsKent Overstreet1-5/+17
This isn't a correctness issue, it just eliminates errors in the dmesg log when we're RO. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: Convert bch2_sb_to_text to master option listKent Overstreet1-1/+1
Options no longer have to be manually added to bch2_sb_to_text() - it now uses the master list of options in opts.h. Also, improve some of the formatting by converting it to tabstops. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Start moving debug info from sysfs to debugfsKent Overstreet1-10/+0
In sysfs, files can only output at most PAGE_SIZE. This is a problem for debug info that needs to list an arbitrary number of times, and because of this limit some of our debug info has been terser and harder to read than we'd like. This patch moves info about journal pins and cached btree nodes to debugfs, and greatly expands and improves the output we return. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: Heap allocate printbufsKent Overstreet1-112/+81
This patch changes printbufs dynamically allocate and reallocate a buffer as needed. Stack usage has become a bit of a problem, and a major cause of that has been static size string buffers on the stack. The most involved part of this refactoring is that printbufs must now be exited with printbuf_exit(). Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-23bcachefs: Add .to_text() methods for all superblock sectionsKent Overstreet1-1/+1
This patch improves the superblock .to_text() methods and adds methods for all types that were missing them. It also improves printbufs by allowing them to specfiy what units we want to be printing in, and adds new wrapper methods for unifying our kernel and userspace environments. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: bch2_gc_gens() no longer uses bucket arrayKent Overstreet1-8/+11
Like the previous patches, this converts bch2_gc_gens() to use the alloc btree directly, and private arrays of generation numbers for its own recalculation of oldest_gen. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: Rename data_op_data_progress -> data_jobsKent Overstreet1-24/+12
Mild refactoring. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2023-10-23bcachefs: Update sysfs compression_stats for snapshotsKent Overstreet1-28/+57
- BTREE_ITER_ALL_SNAPSHOTS flag is required here - change it to also walk the reflink btree - change it to accumulate stats for all pointers in an extent - change it to account for incompressible data Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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