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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. :^)
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5 changed files with 49 additions and 13 deletions
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@ -12,6 +12,8 @@ public:
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int block_size() const { return m_block_size; }
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virtual void flush_writes() override;
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protected:
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explicit DiskBackedFS(Retained<DiskDevice>&&);
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@ -26,4 +28,6 @@ protected:
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private:
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int m_block_size { 0 };
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Retained<DiskDevice> m_device;
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HashMap<unsigned, ByteBuffer> m_write_cache;
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};
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