Refactor flush logic to avoid cache manager deadlocks#1

JoneKone wants to merge 1 commit intomasterJoneKone/Ext4Fsd:masterfrom

codex/analyze-flush-sequence-and-deadlock-in-ext4fsdJoneKone/Ext4Fsd:codex/analyze-flush-sequence-and-deadlock-in-ext4fsdCopy head branch name to clipboard