From: Linus Torvalds <[email protected]>
To: Jens Axboe <[email protected]>
Cc: io-uring <[email protected]>,
linux-fsdevel <[email protected]>,
Al Viro <[email protected]>
Subject: Re: [PATCHSET v3 0/3] Add ability to save/restore iov_iter state
Date: Wed, 15 Sep 2021 12:26:15 -0700 [thread overview]
Message-ID: <CAHk-=wj3dsQMK4y-EeMD1Zyod7=Sv68UqrND-GYgHXx6wNRawA@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
On Wed, Sep 15, 2021 at 11:46 AM Jens Axboe <[email protected]> wrote:
>
> The usual tests
> do end up hitting the -EAGAIN path quite easily for certain device
> types, but not the short read/write.
No way to do something like "read in file to make sure it's cached,
then invalidate caches from position X with POSIX_FADV_DONTNEED, then
do a read that crosses that cached/uncached boundary"?
To at least verify that "partly synchronous, but partly punted to async" case?
Or were you talking about some other situation?
Linus
next prev parent reply other threads:[~2021-09-15 19:26 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-15 16:29 [PATCHSET v3 0/3] Add ability to save/restore iov_iter state Jens Axboe
2021-09-15 16:29 ` [PATCH 1/3] iov_iter: add helper to save " Jens Axboe
2021-09-15 16:29 ` [PATCH 2/3] io_uring: use iov_iter state save/restore helpers Jens Axboe
2021-09-15 16:29 ` [PATCH 3/3] Revert "iov_iter: track truncated size" Jens Axboe
2021-09-15 18:32 ` [PATCHSET v3 0/3] Add ability to save/restore iov_iter state Linus Torvalds
2021-09-15 18:46 ` Jens Axboe
2021-09-15 19:26 ` Linus Torvalds [this message]
2021-09-15 19:40 ` Jens Axboe
2021-09-15 22:42 ` Jens Axboe
2021-09-16 1:15 ` Jens Axboe
2021-09-16 4:47 ` Al Viro
2021-09-16 16:10 ` Jens Axboe
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