From: Willy Tarreau <w@1wt.eu>
To: Daniel Palmer <daniel@thingy.jp>
Cc: linux@weissschuh.net, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/2] selftests/nolibc: Add a very basic test for fallocate()
Date: Sat, 2 May 2026 05:04:08 +0200 [thread overview]
Message-ID: <afVpqIlliDfpYTDA@1wt.eu> (raw)
In-Reply-To: <20260430164125.1106350-3-daniel@thingy.jp>
On Fri, May 01, 2026 at 01:41:25AM +0900, Daniel Palmer wrote:
> 1: Create a tmp file, fallocate() to make it a bit bigger, check the
> size is what was expected.
>
> 2: Try to fallocate() (1 << 20), this should work.
>
> 3: Try to fallocate() (1 << 52), this should cause ENOSPC or EFBIG.
Note that I've already seen one place with more than 4PB on a shared
FS, so I don't know how long such a test could hold true without
causing a havoc. I understand the reason behind the +32 though, and
I'm not worried for the short-to-mid term.
Willy
next prev parent reply other threads:[~2026-05-02 3:04 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-30 16:41 [PATCH v3 0/2] nolibc: Add fallocate() Daniel Palmer
2026-04-30 16:41 ` [PATCH v3 1/2] tools/nolibc: fcntl: " Daniel Palmer
2026-05-01 8:18 ` David Laight
2026-05-02 3:00 ` Willy Tarreau
2026-05-02 21:26 ` David Laight
2026-05-03 16:28 ` Thomas Weißschuh
2026-05-03 22:38 ` David Laight
2026-04-30 16:41 ` [PATCH v3 2/2] selftests/nolibc: Add a very basic test for fallocate() Daniel Palmer
2026-05-02 3:04 ` Willy Tarreau [this message]
2026-05-02 4:00 ` Daniel Palmer
2026-05-02 4:40 ` Willy Tarreau
2026-05-03 16:20 ` Thomas Weißschuh
2026-05-02 3:05 ` [PATCH v3 0/2] nolibc: Add fallocate() Willy Tarreau
2026-05-03 16:21 ` Thomas Weißschuh
2026-05-04 1:46 ` Daniel Palmer
2026-05-04 15:33 ` Thomas Weißschuh
2026-05-05 2:20 ` Daniel Palmer
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