Mark Lord wrote:
> You guys need to backup in this thread.
>
> Every example of O_DIRECT here could be replaced with
> calls to mmap(), msync(), and madvise() (or posix_fadvise).
No. How about handling IO errors? There is no practical way for it with
mmap().
> In addition to being at least as fast as O_DIRECT,
> these have the added benefit of using the page cache
> (avoiding reads for data already present, handling multiple
> users of the same data, etc..).
>
>
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