From: Darrick J. Wong <djwong@xxxxxxxxxx> Adjust the lowspace threshold in the new btree block slack computation code to match online repair, which uses a straight 10% instead of magic shifting to approximate that without division. Repairs aren't that frequent in the kernel; and userspace can always do u64 division. Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Bill O'Donnell <bodonnel@xxxxxxxxxx> --- repair/bulkload.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/repair/bulkload.c b/repair/bulkload.c index 8dd0a0c3908b..0117f69416cf 100644 --- a/repair/bulkload.c +++ b/repair/bulkload.c @@ -106,9 +106,10 @@ bulkload_claim_block( * exceptions to this rule: * * (1) If someone turned one of the debug knobs. - * (2) The AG has less than ~9% space free. + * (2) The AG has less than ~10% space free. * - * Note that we actually use 3/32 for the comparison to avoid division. + * In the latter case, format the new btree blocks almost completely full to + * minimize space usage. */ void bulkload_estimate_ag_slack( @@ -124,8 +125,8 @@ bulkload_estimate_ag_slack( bload->leaf_slack = bload_leaf_slack; bload->node_slack = bload_node_slack; - /* No further changes if there's more than 3/32ths space left. */ - if (free >= ((sc->mp->m_sb.sb_agblocks * 3) >> 5)) + /* No further changes if there's more than 10% space left. */ + if (free >= sc->mp->m_sb.sb_agblocks / 10) return; /*
