Details
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Improvement
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Resolution: Unresolved
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Minor
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None
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None
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None
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9223372036854775807
Description
It would better to cache the unaligned page in kernel page cache to avoid the subsequent writes on the same page which may trigger the expensive Read-Modify-Write (RMW).
And when prepare write, if the page is mapping-ed and uptodate, it can avoid read it before write even it is not page-aligned.