Re: [PATCHSET v5 0/12] Add support for async buffered reads

Andres Freund
2020-06-05T22:54:34Z

Hi,

On 2020-06-05 16:49:24 -0600, Jens Axboe wrote:
> Yes that's expected, if we have to fallback to ->readpage(), then it'll
> go to a worker. read-ahead is what drives the async nature of it, as we
> issue the range (plus more, depending on RA window) as read-ahead for
> the normal read, then wait for it.

But I assume async would still work for files with POSIX_FADV_RANDOM
set, or not? Assuming the system wide setting isn't zero, of course.

Greetings,

Andres Freund