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BTW. while your patchset might be nicely broken down, I think your
naming and descriptions are letting it down a little bit.
Wu Fengguang wrote:
>Aggressive readahead policy for read on start-of-file.
>
>Instead of selecting a conservative readahead size,
>it tries to do large readahead in the first place.
>
>However we have to watch on two cases:
> - do not ruin the hit rate for file-head-checkers
> - do not lead to thrashing for memory tight systems
>
>
How does it handle
- don't needlessly readahead too much if the file is in cache
Would the current readahead mechanism benefit from more aggressive
start-of-file
readahead?
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