kernel.git/fs/bcachefs/btree_cache.h, branch linux-6.10.y

bcachefs: add counters for failed shrinker reclaim

2024-05-09T20:24:29Z

This adds distinct counters for every reason the btree node shrinker can fail to free an object - if our shrinker isn't making progress, this will tell us why. Signed-off-by: Daniel Hill Signed-off-by: Kent Overstreet

bcachefs: Run bch2_check_fix_ptrs() via triggers

2024-05-08T21:29:20Z

Currently, the reflink_p gc trigger does repair as well - turning a reflink_p key into an error key if the reflink_v it points to doesn't exist. This won't work with online check/repair, because the repair path once online will be subject to transaction restarts, but BTREE_TRIGGER_gc is not idempotant - we can't run it multiple times if we get a transaction restart. So we need to split these paths; to do so this patch calls check_fix_ptrs() by a new general path - a new trigger type, BTREE_TRIGGER_check_repair. Signed-off-by: Kent Overstreet

bcachefs: Prep work for variable size btree node buffers

2024-01-21T18:27:10Z

bcachefs btree nodes are big - typically 256k - and btree roots are pinned in memory. As we're now up to 18 btrees, we now have significant memory overhead in mostly empty btree roots. And in the future we're going to start enforcing that certain btree node boundaries exist, to solve lock contention issues - analagous to XFS's AGIs. Thus, we need to start allocating smaller btree node buffers when we can. This patch changes code that refers to the filesystem constant c->opts.btree_node_size to refer to the btree node buffer size - btree_buf_bytes() - where appropriate. Signed-off-by: Kent Overstreet

bcachefs: Include btree_trans in more tracepoints

2024-01-01T16:47:40Z

This gives us more context information - e.g. which codepath is invoking btree node reads. Signed-off-by: Kent Overstreet

bcachefs: bch2_btree_id_str()

2023-10-31T16:18:37Z

Since we can run with unknown btree IDs, we can't directly index btree IDs into fixed size arrays. Signed-off-by: Kent Overstreet

bcachefs: Assorted sparse fixes

2023-10-22T21:10:06Z

- endianness fixes - mark some things static - fix a few __percpu annotations - fix silent enum conversions Signed-off-by: Kent Overstreet

bcachefs: Allow for unknown btree IDs

2023-10-22T21:10:05Z

We need to allow filesystems with metadata from newer versions to be mountable and usable by older versions. This patch enables us to roll out new btrees without a new major version number; we can now handle btree roots for unknown btree types. The unknown btree roots will be retained, and fsck (including backpointers) will check them, the same as other btree types. We add a dynamic array for the extra, unknown btree roots, in addition to the fixed size btree root array, and add new helpers for looking up btree roots. Signed-off-by: Kent Overstreet

bcachefs: bch2_btree_node_to_text() const correctness

2023-10-22T21:09:56Z

This is for the Rust interface - Rust cares more about const than C does. Signed-off-by: Kent Overstreet

bcachefs: Plumb btree_trans through btree cache code

2023-10-22T21:09:55Z

Soon, __bch2_btree_node_write() is going to require a btree_trans: zoned device support is going to require a new allocation for every btree node write. This is a bit of prep work. Signed-off-by: Kent Overstreet

bcachefs: Move bkey bkey_unpack_key() to bkey.h

2023-10-22T21:09:45Z

Long ago, bkey_unpack_key() was added to bset.h instead of bkey.h because bkey.h didn't include btree_types.h, which it needs for the compiled unpack function. This patch finally moves it to the proper location. Signed-off-by: Kent Overstreet