Chris Kirby 3f786596e0 Don't overrun the block budget in server_log_merge_free_work(). ...

This fixes a potential fence post failure like the following:

error: 1 holders exceeded alloc budget av: bef 7407 now 7392, fr: bef 8185 now 7672

The code is only accounting for the freed btree blocks, not the dirtying of
other items. So it's possible to be at exactly (COMMIT_HOLD_ALLOC_BUDGET / 2),
dirty some log btree blocks, loop again, then consume another
(COMMIT_HOLD_ALLOC_BUDGET / 2) and blow past the total budget.

In this example, we went over by 13 blocks.

By only consuming up to 1/8 of the budget on each loop, and committing when we
have consumed 3/4 of the budget, we can avoid the fence post condition.

Signed-off-by: Chris Kirby <ckirby@versity.com>

2025-10-06 12:27:25 -05:00

..

src

Don't overrun the block budget in server_log_merge_free_work().

2025-10-06 12:27:25 -05:00

.gitignore

scoutfs: update rpm building infrastructure

2018-09-14 15:07:10 -07:00

Makefile

Require sparse, and filter kernel sparse output

2025-10-03 09:35:36 -07:00

scoutfs-kmod.spec.in

Block EL9 minor version upgrades

2024-12-02 16:04:24 -08:00