bcachefs: btree write buffer: Do write buffer updates via journal

Instead of appending to the write buffer in the transaction commit path,
remember that we also have everything we need in the journal:

This adds a new journal entry type, BCH_JSET_ENTRY_buffered_keys, for
keys that needed to be added to the write buffer. Before doing a journal
write, in our compaction pass, we find those journal entries and add
them to the write buffer, and write them out with the normal
BCH_JSET_ENTRY_btree_keys type.

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

0 files changed, 0 insertions, 0 deletions