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From: Jens Axboe <axboe@kernel.dk>
To: linux-fsdevel@vger.kernel.org
Cc: torvalds@linux-foundation.org, viro@zeniv.linux.org.uk
Subject: [PATCHSET v3 0/4] fs: Support for LOOKUP_NONBLOCK / RESOLVE_NONBLOCK
Date: Mon, 14 Dec 2020 12:13:20 -0700	[thread overview]
Message-ID: <20201214191323.173773-1-axboe@kernel.dk> (raw)

Hi,

Wanted to throw out what the current state of this is, as we keep
getting closer to something palatable.

This time I've included the io_uring change too. I've tested this through
both openat2, and through io_uring as well.

I'm pretty happy with this at this point. The core change is very simple,
and the users end up being trivial too.

Also available here:

https://git.kernel.dk/cgit/linux-block/log/?h=nonblock-path-lookup

Changes since v2:

- Simplify the LOOKUP_NONBLOCK to _just_ cover LOOKUP_RCU and
  lookup_fast(), as per Linus's suggestion. I verified fast path
  operations are indeed just that, and it avoids having to mess with
  the inode lock and mnt_want_write() completely.

- Make O_TMPFILE return -EAGAIN for LOOKUP_NONBLOCK.

- Improve/add a few comments.

- Folded what was left of the open part of LOOKUP_NONBLOCK into the
  main patch.

-- 
Jens Axboe



             reply	other threads:[~2020-12-14 19:14 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-14 19:13 Jens Axboe [this message]
2020-12-14 19:13 ` [PATCH 1/4] fs: make unlazy_walk() error handling consistent Jens Axboe
2020-12-14 19:13 ` [PATCH 2/4] fs: add support for LOOKUP_NONBLOCK Jens Axboe
2020-12-15 12:24   ` Matthew Wilcox
2020-12-15 15:29     ` Jens Axboe
2020-12-15 15:33       ` Matthew Wilcox
2020-12-15 15:37         ` Jens Axboe
2020-12-15 16:08           ` Jens Axboe
2020-12-15 16:14             ` Jens Axboe
2020-12-15 18:29             ` Linus Torvalds
2020-12-15 18:44               ` Jens Axboe
2020-12-15 18:47                 ` Linus Torvalds
2020-12-15 19:03                   ` Jens Axboe
2020-12-15 19:32                     ` Linus Torvalds
2020-12-15 19:38                       ` Jens Axboe
2020-12-16  2:36   ` Al Viro
2020-12-16  3:30     ` Jens Axboe
2020-12-16  2:43   ` Al Viro
2020-12-16  3:32     ` Jens Axboe
2020-12-14 19:13 ` [PATCH 3/4] fs: expose LOOKUP_NONBLOCK through openat2() RESOLVE_NONBLOCK Jens Axboe
2020-12-15 22:25   ` Dave Chinner
2020-12-15 22:31     ` Linus Torvalds
2020-12-15 23:25       ` Jens Axboe
2020-12-16  2:37   ` Al Viro
2020-12-16  3:39     ` Linus Torvalds
2020-12-14 19:13 ` [PATCH 4/4] io_uring: enable LOOKUP_NONBLOCK path resolution for filename lookups Jens Axboe
2020-12-15  3:06 ` [PATCHSET v3 0/4] fs: Support for LOOKUP_NONBLOCK / RESOLVE_NONBLOCK Linus Torvalds
2020-12-15  3:18   ` Jens Axboe
2020-12-15  6:11 ` Al Viro
2020-12-15 15:29   ` Jens Axboe
2021-01-04  5:31 ` Al Viro
2021-01-04 14:43   ` Jens Axboe
2021-01-04 16:54     ` Al Viro
2021-01-04 17:03       ` Jens Axboe
     [not found] ` <m1lfbrwrgq.fsf@fess.ebiederm.org>
2021-02-14 16:38   ` [PATCHSET v3 0/4] fs: Support for LOOKUP_NONBLOCK / RESOLVE_NONBLOCK (Insufficiently faking current?) Jens Axboe
2021-02-14 20:30     ` Linus Torvalds
2021-02-14 21:24       ` Al Viro
2021-02-15 18:07       ` Eric W. Biederman
2021-02-15 18:24         ` Jens Axboe
2021-02-15 21:09           ` Jens Axboe
2021-02-15 22:41             ` Eric W. Biederman
2021-02-16  2:41               ` Jens Axboe
2021-02-17  1:18                 ` Jens Axboe
2021-02-17  1:26                   ` Jens Axboe
2021-02-17  3:11                     ` Jens Axboe
2021-02-15 17:56     ` Eric W. Biederman

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