forked from TrueCloudLab/frostfs-node
Evgenii Stratonikov
e0309e398c
LRU `Peek`/`Contains` take LRU mutex _inside_ of a `View` transaction.
`View` transaction itself takes `mmapLock` [1], which is lifted after tx
finishes (in `tx.Commit()` -> `tx.close()` -> `tx.db.removeTx`)
When we evict items from LRU cache mutex order is different:
first we take LRU mutex and then execute `Batch` which _does_ take
`mmapLock` in case we need to remap. Thus the deadlock.
[1]
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| blobovnicza | ||
| blobstor | ||
| engine | ||
| internal | ||
| metabase | ||
| pilorama | ||
| shard | ||
| util | ||
| writecache | ||