From: Jens Axboe <[email protected]>
To: Sidong Yang <[email protected]>,
io-uring <[email protected]>
Subject: Re: [PATCH] io-uring: futex: cache io_futex_data than kfree
Date: Thu, 23 Jan 2025 06:36:06 -0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 1/23/25 3:50 AM, Sidong Yang wrote:
> If futex_wait_setup() fails in io_futex_wait(), Old code just releases
> io_futex_data. This patch tries to cache io_futex_data before kfree.
It's not that the patch is incorrect, but:
1) This is an error path, surely we do not care about caching in
that case. If it's often hit, then the application would be buggy.
2) If you're going to add an io_free_ifd() helper, then at least use it
for the normal case too that still open-codes it.
--
Jens Axboe
next prev parent reply other threads:[~2025-01-23 13:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-23 10:50 [PATCH] io-uring: futex: cache io_futex_data than kfree Sidong Yang
2025-01-23 13:36 ` Jens Axboe [this message]
2025-01-24 1:15 ` Sidong Yang
2025-01-24 13:37 ` Jens Axboe
2025-01-24 15:08 ` Sidong Yang
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