[LU-4096] Do not allocate large buffer for readdir rpc in case of a small directory

Duplicate — Mon, 1 May 2023 16:26:01 +0000

Notes from Oleg:
Sincewe know the directory size at readdir time, we can estimate if we actually need a large buffer for readdir or not. This is not certain, but a good guess. additionally we can check mtime and if it's very recent, we might want to allow a slightly bigger buffer still to accounf for the possible directory growth"

Whamcloud Community JIRA

[LU-4096] Do not allocate large buffer for readdir rpc in case of a small directory