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bcachefs: bch_dev_usage_full

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All the fastpaths that need device usage don't need the sector totals or
fragmentation, just bucket counts.

Split bch_dev_usage up into two different versions, the normal one with
just bucket counts.

This is also a stack usage improvement, since we have a bch_dev_usage on
the stack in the allocation path.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2025-03-31 16:09:39 -04:00
commit 955ba7b5ea
8 changed files with 51 additions and 25 deletions
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