bcachefs: BCH_WATERMARK_interior_updates

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This adds a new watermark, higher priority than BCH_WATERMARK_reclaim,
for interior btree updates. We've seen a deadlock where journal replay
triggers a ton of btree node merges, and these use up all available open
buckets and then interior updates get stuck.

One cause of this is that we're currently lacking btree node merging on
write buffer btrees - that needs to be fixed as well.

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

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This commit is contained in:

Kent Overstreet 2024-04-01 19:20:36 -04:00

parent ba947ecd39

commit e2a316b3cc

6 changed files with 12 additions and 7 deletions

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4

fs/bcachefs/alloc_foreground.c

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3

fs/bcachefs/alloc_types.h

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2

fs/bcachefs/btree_io.c

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3

fs/bcachefs/btree_trans_commit.c

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6

fs/bcachefs/btree_update_interior.c

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1

fs/bcachefs/buckets.h

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