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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