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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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@ -118,6 +118,13 @@ public:
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void* end_pointer() { return m_impl ? m_impl->end_pointer() : nullptr; }
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const void* end_pointer() const { return m_impl ? m_impl->end_pointer() : nullptr; }
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ByteBuffer isolated_copy() const
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{
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if (!m_impl)
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return { };
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return copy(m_impl->pointer(), m_impl->size());
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}
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// NOTE: trim() does not reallocate.
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void trim(ssize_t size)
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{
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