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Kernel: Remove KBufferBuilder's can_expand restriction
KBufferBuilder is always allowed to expand if it wants to. This restriction was added a long time ago when it was unsafe to allocate VM while generating ProcFS contents.
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2 changed files with 2 additions and 6 deletions
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@ -15,8 +15,6 @@ inline bool KBufferBuilder::check_expand(size_t size)
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return false;
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if ((m_size + size) < m_buffer->capacity())
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return true;
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if (!m_can_expand)
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return false;
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if (Checked<size_t>::addition_would_overflow(m_size, size))
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return false;
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size_t new_buffer_size = m_size + size;
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@ -42,9 +40,8 @@ OwnPtr<KBuffer> KBufferBuilder::build()
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return try_make<KBuffer>(move(m_buffer));
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}
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KBufferBuilder::KBufferBuilder(bool can_expand)
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KBufferBuilder::KBufferBuilder()
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: m_buffer(KBufferImpl::try_create_with_size(4 * MiB, Region::Access::Read | Region::Access::Write))
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, m_can_expand(can_expand)
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{
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}
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@ -16,7 +16,7 @@ class KBufferBuilder {
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public:
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using OutputType = KBuffer;
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explicit KBufferBuilder(bool can_expand = false);
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KBufferBuilder();
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KBufferBuilder(KBufferBuilder&&) = default;
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~KBufferBuilder() = default;
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@ -50,7 +50,6 @@ private:
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RefPtr<KBufferImpl> m_buffer;
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size_t m_size { 0 };
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bool m_can_expand { false };
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};
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}
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