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Kernel: Add a write cache to DiskBackedFS.

This way you can spam small write()s on a file without the kernel writing
to disk every single time. Flushes are included in the FS::sync() operation
and will get triggered regularly by syncd. :^)
This commit is contained in:
Andreas Kling 2019-04-25 22:05:53 +02:00
parent e0cdc5db0d
commit 44673c4f3b
5 changed files with 49 additions and 13 deletions

View file

@ -12,6 +12,8 @@ public:
int block_size() const { return m_block_size; }
virtual void flush_writes() override;
protected:
explicit DiskBackedFS(Retained<DiskDevice>&&);
@ -26,4 +28,6 @@ protected:
private:
int m_block_size { 0 };
Retained<DiskDevice> m_device;
HashMap<unsigned, ByteBuffer> m_write_cache;
};