From: Christoph Hellwig <hch@lst.de>
To: Florian Weimer <fweimer@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>,
libc-alpha@sourceware.org, linux-fsdevel@vger.kernel.org,
Trond Myklebust <trondmy@hammerspace.com>
Subject: Re: posix_fallocate behavior in glibc
Date: Tue, 30 Jul 2024 17:47:30 +0200 [thread overview]
Message-ID: <20240730154730.GA30157@lst.de> (raw)
In-Reply-To: <8734nsj93p.fsf@oldenburg.str.redhat.com>
On Mon, Jul 29, 2024 at 09:23:22PM +0200, Florian Weimer wrote:
> Anything that's not EOPNOTSUPP will do. EMEDIUMTYPE or ENOTBLK might do
> it. Any of the many STREAMS error codes could also be re-used quite
> safely because Linux doesn't do STREAMS.
Huh? EOPNOTSUP(P) is the standard error code in Posix for operation
not supported, and clearly documented as such in the Linux man page
(for musl). A totally random new error code doesn't really help us.
> If you remove the fallback code, applications need to be taught about
> EOPNOTSUPP, so that doesn't really make a difference.
Portable software can't assume that posix_fallocate actually does
anything.
next prev parent reply other threads:[~2024-07-30 15:47 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-29 16:09 posix_fallocate behavior in glibc Christoph Hellwig
2024-07-29 17:23 ` Paul Eggert
2024-07-29 17:43 ` Christoph Hellwig
2024-07-29 17:54 ` Adhemerval Zanella Netto
[not found] ` <CAPBLoAf11hM0PLhqPG5gUyivU9U1manpOOhDWCPugUmWc1VVUw@mail.gmail.com>
2024-07-29 18:45 ` Christoph Hellwig
2024-07-29 17:57 ` Florian Weimer
2024-07-29 18:44 ` Christoph Hellwig
2024-07-29 18:52 ` Florian Weimer
2024-07-29 19:01 ` Christoph Hellwig
2024-07-29 19:23 ` Florian Weimer
2024-07-30 15:47 ` Christoph Hellwig [this message]
2024-07-30 16:11 ` Paul Eggert
2024-07-30 16:20 ` Christoph Hellwig
2024-07-30 17:03 ` Florian Weimer
2024-07-30 17:08 ` Christoph Hellwig
2024-07-30 17:29 ` Florian Weimer
2024-07-30 17:52 ` Mark Wielaard
2024-07-31 2:32 ` Theodore Ts'o
2024-07-29 23:53 ` Dave Chinner
-- strict thread matches above, loose matches on Subject: below --
2024-06-26 6:01 Christoph Hellwig
2024-07-29 15:09 ` Christoph Hellwig
2024-07-29 15:11 ` Sam James
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