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Lots of (mostly boring) fixes for syzbot bugs and rare(r) CI bugs.
The LRU_TIME_BITS fix was slightly more involved; we only have 48 bits
for the LRU position (we would prefer 64), so wraparound is possible for
the cached data LRUs on a filesystem that has done sufficient
(petabytes) reads; this is now handled.
One notable user reported bugfix, where we were forgetting to correctly
set the bucket data type, which should have been BCH_DATA_need_gc_gens
instead of BCH_DATA_free; this was causing us to go emergency read-only
on a filesystem that had seen heavy enough use to see bucket gen
wraparoud.
We're now starting to fix simple (safe) errors without requiring user
intervention - i.e. a small incremental step towards full self healing.
This is currently limited to just certain allocation information
counters, and the error is still logged in the superblock; see that
patch for more information. ("bcachefs: Fix safe errors by default").
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Merge tag 'bcachefs-2024-06-22' of https://evilpiepirate.org/git/bcachefs
Pull bcachefs fixes from Kent Overstreet:
"Lots of (mostly boring) fixes for syzbot bugs and rare(r) CI bugs.
The LRU_TIME_BITS fix was slightly more involved; we only have 48 bits
for the LRU position (we would prefer 64), so wraparound is possible
for the cached data LRUs on a filesystem that has done sufficient
(petabytes) reads; this is now handled.
One notable user reported bugfix, where we were forgetting to
correctly set the bucket data type, which should have been
BCH_DATA_need_gc_gens instead of BCH_DATA_free; this was causing us to
go emergency read-only on a filesystem that had seen heavy enough use
to see bucket gen wraparoud.
We're now starting to fix simple (safe) errors without requiring user
intervention - i.e. a small incremental step towards full self
healing.
This is currently limited to just certain allocation information
counters, and the error is still logged in the superblock; see that
patch for more information. ("bcachefs: Fix safe errors by default")"
* tag 'bcachefs-2024-06-22' of https://evilpiepirate.org/git/bcachefs: (22 commits)
bcachefs: Move the ei_flags setting to after initialization
bcachefs: Fix a UAF after write_super()
bcachefs: Use bch2_print_string_as_lines for long err
bcachefs: Fix I_NEW warning in race path in bch2_inode_insert()
bcachefs: Replace bare EEXIST with private error codes
bcachefs: Fix missing alloc_data_type_set()
closures: Change BUG_ON() to WARN_ON()
bcachefs: fix alignment of VMA for memory mapped files on THP
bcachefs: Fix safe errors by default
bcachefs: Fix bch2_trans_put()
bcachefs: set_worker_desc() for delete_dead_snapshots
bcachefs: Fix bch2_sb_downgrade_update()
bcachefs: Handle cached data LRU wraparound
bcachefs: Guard against overflowing LRU_TIME_BITS
bcachefs: delete_dead_snapshots() doesn't need to go RW
bcachefs: Fix early init error path in journal code
bcachefs: Check for invalid btree IDs
bcachefs: Fix btree ID bitmasks
bcachefs: Fix shift overflow in read_one_super()
bcachefs: Fix a locking bug in the do_discard_fast() path
...
c3de9b572f