bcachefs: Hold usage_lock over mark_key and fs_usage_apply

Fixes an inconsistency at the end of gc

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Stripes now properly subject to gc

gc now verifies the contents of the stripes radix tree, important for
persistent alloc info

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Btree locking fix, refactoring

Hit an assertion, probably spurious, indicating an iterator was unlocked
when it shouldn't have been (spurious because it wasn't locked at all
when the caller called btree_insert_at()).

Add a flag, BTREE_ITER_NOUNLOCK, and tighten up the assertions

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: shim for userspace raid library

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Revert "bcachefs: start erasure coding after journal replay"

This reverts commit 36f389604294dfc953e6f5624ceb683818d32f28.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Allow for new alloc fields

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: gc now operates on second set of bucket marks

This means we can now use gc to verify the allocation information -
important for testing persistant alloc info

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix mempool double initialization

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix btree iterator bug when using depth > 0

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Allocator startup improvements

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Journal refactoring

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Don't block on journal reservation with btree locks held

Fixes a deadlock between the allocator thread, when it first starts up,
and journal replay

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: start erasure coding after journal replay

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Clean up, possixly fix page disk reservation accounting

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Fix an error path

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix typo when picking read method

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Erasure coding

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: More btree gc refactorings

more prep work for erasure coding

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Centralize marking of replicas in btree update path

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Move key marking out of extents.c

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: stripe support for replicas tracking

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Check for unsupported features

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: revamp to_text methods

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: delete some dead code

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix a replicas bug

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Set the last mount time using the realtime clock

This way the last mount time is actually meaningful instead of just being
various times from 1970 (which happens with the monotonic clock).

Also, roundup_pow_of_two() is undefined when passed in 0, so check before
calling it.

Signed-off-by: Tim Schlueter <schlueter.tim@linux.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Disk usage in compressed sectors, not uncompressed

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Assorted fixes for running on very small devices

It's now possible to create and use a filesystem on a 512k device with
4k buckets (though at that size we still waste almost half to internal
reserves)

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Scale down number of writepoints when low on space

this means we don't have to reserve space for them when calculating
filesystem capacity

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Fix an assertion when rebuilding replicas

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Rename nofsck opt to fsck

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Fix journal replay when replicas sb section missing

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix bounds checks in bch2_bio_map()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Some fixes for building in userspace

userspace allocators don't align allocations as nicely as kernel
allocators, which meant that in some cases we weren't allocating big
enough bvec arrays - just make the calculations more rigorous and
explicit to fix it.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix bch2_bkey_print_bfloat

was popping an assertion in the eytzinger code

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: new avoid mechanism for io retries

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: more key marking refactoring

prep work for erasure coding

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: replicas: prep work for stripes

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: kill struct bch_replicas_cpu_entry

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: add functionality for heaps to update backpointers

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: btree gc refactoring

prep work for erasure coding

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: BCH_EXTENT_ENTRY_TYPES()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: bch2_extent_ptr_decoded_append()

This new helper for the move path avoids creating a new CRC entry when
we already have one that matches the pointer being added.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: bch2_extent_drop_ptrs()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: extent_for_each_ptr_decode()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: kill bch_extent_crc_type

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: extent_ptr_decoded

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix missing include

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix a spurious gcc warning

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Allocation code refactoring

bch2_alloc_sectors_start() was a nightmare to work with - it's got some
tricky stuff to do, since it wants to use the buckets the writepoint
already has, unless they're not in the target it wants to write to,
unless it can't allocate from any other devices in which case it will
use those buckets if it has to - et cetera.

This restructures the code to start with a new empty list of open
buckets we're going to use for the new allocation, pulling buckets from
the write point's list as we decide that we really are going to use
them - making the code somewhat more functional and drastically easier
to understand.

Also fixes a bug where we could end up waiting on c->freelist_wait
(because allocating from one device failed) but return success from
bch2_bucket_alloc(), because allocating from a different device
succeeded.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Split out alloc_background.c

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Fix failure to suspend

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Fix suspend when moving data faster than ratelimit

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix bch2_acl_chmod()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Fix a deadlock

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix a divide

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: make fsck spew less

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Dirent repair code

There was a bug for awhile in previous kernels where we weren't
computing dirent name lengths correctly and we weren't zeroing out
padding at the end of dirents (due to struct bch_dirent changing size by
adding __attribute__((aligned)), and not updating other code to use
offsetof).

This patch fixes dirents with junk at the end, by going off of the
dirent's hash.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Fix a btree iter bug when iter pos == POS_MAX

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Comparison function cleanups

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Prioritize fragmentation in bucket allocator

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Pass around bset_tree less

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: kill extent_insert_hook

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: kill i_sectors_hook

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: convert fcollapse to bch2_extent_update()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: convert fpunch to bch2_extent_update()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: convert truncate to bch2_extent_update()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: convert bchfs_write_index_update() to bch2_extent_update()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: bch2_extent_trim_atomic()

Prep work for extents insert hook removal

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: mempoolify btree_trans

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: BTREE_INSERT_JOURNAL_RES_FULL is no longer possible

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: extent_squash() can no longer fail

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: make struct btree_iter a bit smaller

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: lift ordering restriction on 0 size extents

This lifts the restriction that 0 size extents must not overlap with
other extents, which means we can now sort extents and non extents the
same way, and will let us simplify a bunch of other stuff as well.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: extent unit tests

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: bkey_written()

also cleanups of btree node offsets

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: improved rw_aux_tree_bsearch()

shouldn't be any reason for an actual binary search here

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Factor out btree_key_can_insert()

working on getting rid of all the reasons bch2_insert_fixup_extent() can
fail/stop partway, which is needed for other refactorings.

One of the reasons we could have to bail out is if we're splitting a
compressed extent we might need to add to our disk reservation - but we
can check that before actually starting the insert.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: BCH_SB_RESERVE_BYTES

Add an option, gc_reserve_bytes, to set the copygc reserve as a size
instead of a percent

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Better calculation of copygc threshold

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Change how replicated data is accounted

Due to compression, the different replicas of a replicated extent don't
necessarily have to take up the same amount of space - so replicated
data sector counts shouldn't be stored divided by the number of
replicas.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Account for internal fragmentation better

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: kill s_alloc, use bch_data_type

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: bch2_mark_key() now takes bch_data_type

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Fix an assertion in the btree node merge path

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Fix locking in allocator thread

gc lock must be held while invalidating buckets - fixes
"1f7a95698e bcachefs: Invalidate buckets when writing to alloc btree"

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix bch2_val_to_text()

was returning wrong value

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: minor fsync fix

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Assorted journal refactoring

Also improve error reporting - only return an error from
bch2_journal_flush_seq() if we had an error writing that entry (i.e. not
if there was an error with a newer entry).

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix last_seq_ondisk

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix mtime/ctime update on truncate

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix fsync after create

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix nbuckets usage on device resize

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Invalidate buckets when writing to alloc btree

Prep work for persistent alloc information. Refactoring also lets us
make free_inc much smaller, which means a lot fewer buckets stranded on
freelists.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: kill bucket mark sector count saturation

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: don't call bch2_bucket_seq_cleanup from journal_buf_switch

journal_buf_switch is called from the foreground when getting a journal
reservation and thus is somewhat latency sensitive;
bch2_bucket_seq_cleanup has to run infrequently but is a bit expensive
when it does run.

Call it from the journal write path instead, and punt the journal write
to worqueue context.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Fix an assertion

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: fix rename + fsync

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: Use ei_update_lock consistently

This is prep work for using deferred btree updates for inode updates -
the way inodes are done now we're relying on btree locking for ei_inode
and ei_update_lock could probably be removed, but it'll actually be
needed when we switch to deferred updates.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

bcachefs: bch2_trans_update() now takes struct btree_insert_entry

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>