Arpad Müller 9ffccb55f1 InMemoryLayer: move end_lsn out of the lock (#4963) ...

## Problem

In some places, the lock on `InMemoryLayerInner` is only created to
obtain `end_lsn`. This is not needed however, if we move `end_lsn` to
`InMemoryLayer` instead.

## Summary of changes

Make `end_lsn` a member of `InMemoryLayer`, and do less locking of
`InMemoryLayerInner`. `end_lsn` is changed from `Option<Lsn>` into an
`OnceLock<Lsn>`. Thanks to this change, we don't need to lock any more
in three functions.

Part of #4743 . Suggested in
https://github.com/neondatabase/neon/pull/4905#issuecomment-1666458428 .

2023-08-11 18:01:02 +02:00

..

benches

remove LayerDescriptor and use LayerObject for tests (#4637)

2023-07-10 19:40:37 +03:00

ctl

pagectl: skip metadata file in pagectl draw-timeline (#4872)

2023-08-07 08:24:50 +01:00

fixtures

walredo: simple tests and bench updates (#3045)

2023-01-16 18:24:45 +02:00

src

InMemoryLayer: move end_lsn out of the lock (#4963)

2023-08-11 18:01:02 +02:00

Cargo.toml

Limit concurrent compactions (#4777)

2023-07-25 10:19:04 +03:00