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From: Matthew Wilcox <>
To: Rasmus Villemoes <>
Cc: Cyrill Gorcunov <>,
	Andrew Morton <>,,
Subject: Re: [PATCH] kcmp: add separate Kconfig symbol for kcmp syscall
Date: Fri, 10 Jul 2020 16:57:19 +0100	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Fri, Jul 10, 2020 at 09:56:31AM +0200, Rasmus Villemoes wrote:
> The ability to check open file descriptions for equality (without
> resorting to unreliable fstat() and fcntl(F_GETFL) comparisons) can be
> useful outside of the checkpoint/restore use case - for example,
> systemd uses kcmp() to deduplicate the per-service file descriptor
> store.
> Make it possible to have the kcmp() syscall without the full

If systemd is using it, is it even worth making it conditional any more?
Maybe for CONFIG_EXPERT builds, it could be de-selectable.

  parent reply	other threads:[~2020-07-10 15:57 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-10  7:56 Rasmus Villemoes
2020-07-10  8:30 ` Cyrill Gorcunov
2020-07-10  9:05   ` Rasmus Villemoes
2020-07-10  9:37     ` Cyrill Gorcunov
2020-07-10 15:51 ` Randy Dunlap
2020-07-10 15:57 ` Matthew Wilcox [this message]
2020-10-13 19:45   ` Rasmus Villemoes

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