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use copy_split in freeze

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This commit is contained in:
Patrick Insinger
2021-10-05 13:04:17 -07:00
parent 2ccc8f3e36
commit 3e1e934a21
1 changed files with 12 additions and 7 deletions
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19
pageserver/src/layered_repository/inmemory_layer.rs
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@@ -672,13 +672,18 @@ impl InMemoryLayer {
let mut before_page_versions = PageVersions::default();
let mut after_page_versions = PageVersions::default();
for (blknum, ordered_vec) in inner.page_versions.0.iter() {
for (lsn, pv) in ordered_vec.iter() {
if *lsn > cutoff_lsn {
after_page_versions.update(*blknum, *lsn, pv.clone());
after_oldest_lsn.accum(min, *lsn);
} else {
before_page_versions.update(*blknum, *lsn, pv.clone());
}
let (before_ov, after_ov) = ordered_vec.copy_split(&Lsn(cutoff_lsn.0 + 1));
if let Some((lsn, _pv)) = after_ov.iter().next() {
after_oldest_lsn.accum(min, *lsn);
}
if !before_ov.is_empty() {
before_page_versions.0.insert(*blknum, before_ov);
}
if !after_ov.is_empty() {
after_page_versions.0.insert(*blknum, after_ov);
}
}