kernel/linux.git/fs/bcachefs/move.c, branch v6.12.80

bcachefs: Don't keep tons of cached pointers around

2024-10-29T10:34:10+00:00

We had a bug report where the data update path was creating an extent that failed to validate because it had too many pointers; almost all of them were cached. To fix this, we have: - want_cached_ptr(), a new helper that checks if we even want a cached pointer (is on appropriate target, device is readable). - bch2_extent_set_ptr_cached() now only sets a pointer cached if we want it. - bch2_extent_normalize_by_opts() now ensures that we only have a single cached pointer that we want. While working on this, it was noticed that this doesn't work well with reflinked data and per-file options. Another patch series is coming that plumbs through additional io path options through bch_extent_rebalance, with improved option handling. Reported-by: Reed Riley Signed-off-by: Kent Overstreet

bcachefs: Kill alloc_v4.fragmentation_lru

2024-10-05T00:25:32+00:00

The fragmentation_lru field hasn't been needed since we reworked the LRU btrees to use the btree write buffer; previously it was used to resolve collisions, but the revised LRU btree uses the backpointer (the bucket) as part of the key. It should have been deleted at the time of the LRU rework; since it wasn't, that left places for bugs to hide, in check/repair. This fixes LRU fsck on a filesystem image helpfully provided by a user who disappeared before I could get his name for the reported-by. Signed-off-by: Kent Overstreet

bcachefs: btree_ptr_sectors_written() now takes bkey_s_c

2024-07-14T23:00:12+00:00

this is for the userspace metadata dump tool Signed-off-by: Kent Overstreet

bcachefs: bch2_data_update_to_text()

2024-07-10T13:53:39+00:00

Signed-off-by: Kent Overstreet

bcachefs: Fix trans->locked assert

2024-06-05T14:44:08+00:00

in bch2_move_data_btree, we might start with the trans unlocked from a previous loop iteration - we need a trans_begin() before iter_init(). Signed-off-by: Kent Overstreet

bcachefs: Rereplicate now moves data off of durability=0 devices

2024-06-05T14:44:08+00:00

This fixes an issue where setting a device to durability=0 after it's been used makes it impossible to remove. Signed-off-by: Kent Overstreet

bcachefs: extent_ptr_durability() -> bch2_dev_rcu()

2024-05-08T21:29:23+00:00

Signed-off-by: Kent Overstreet

bcachefs: Kill bch2_dev_bkey_exists() in backpointer code

2024-05-08T21:29:23+00:00

Signed-off-by: Kent Overstreet

bcachefs: bch2_evacuate_bucket() -> bch2_dev_tryget()

2024-05-08T21:29:23+00:00

Signed-off-by: Kent Overstreet

bcachefs: member helper cleanups

2024-05-08T21:29:19+00:00

Some renaming for better consistency bch2_member_exists -> bch2_member_alive bch2_dev_exists -> bch2_member_exists bch2_dev_exsits2 -> bch2_dev_exists bch_dev_locked -> bch2_dev_locked bch_dev_bkey_exists -> bch2_dev_bkey_exists new helper - bch2_dev_safe Signed-off-by: Kent Overstreet