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From: "Sébastien Dugué" <sebastien.dugue@bull.net>
To: Laurent Vivier <Laurent.Vivier@bull.net>
Cc: Andrew Morton <akpm@osdl.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-aio <linux-aio@kvack.org>,
Bharata B Rao <bharata@in.ibm.com>,
Christoph Hellwig <hch@infradead.org>,
Suparna Bhattacharya <suparna@in.ibm.com>,
Ulrich Drepper <drepper@redhat.com>,
Zach Brown <zach.brown@oracle.com>,
Jean Pierre Dion <jean-pierre.dion@bull.net>,
Badari Pulavarty <pbadari@us.ibm.com>
Subject: Re: [PATCH -mm 5/5][AIO] - Add listio syscall support
Date: Wed, 24 Jan 2007 12:53:11 +0100 [thread overview]
Message-ID: <20070124125311.7fbe0393@frecb000686> (raw)
In-Reply-To: <45B72C7A.90803@bull.net>
On Wed, 24 Jan 2007 10:52:58 +0100 Laurent Vivier <Laurent.Vivier@bull.net> wrote:
> Andrew Morton wrote:
> > On Wed, 17 Jan 2007 10:55:54 +0100
> > Sébastien Dugué <sebastien.dugue@bull.net> wrote:
> >
> >> +struct lio_event *lio_create(struct sigevent __user *user_event,
> >> + int mode)
> >> +{
> >> + int ret = 0;
> >> + struct lio_event *lio = NULL;
> >> +
> >> + if (unlikely((mode == LIO_NOWAIT) && !user_event))
> >> + return lio;
> >> +
> >> + lio = kzalloc(sizeof(*lio), GFP_KERNEL);
> >> +
> >> + if (!lio)
> >> + return ERR_PTR(-EAGAIN);
> >> +
> >
> > Why EAGAIN and not ENOMEM?
>
> According to the POSIX AIO specifications:
>
> "ERRORS:
> ...
> [EAGAIN]
> The resources necessary to queue all the I/O requests were not available. "
>
> I think memory is "a resource necessary to queue all the I/O requests"...
>
> http://www.opengroup.org/onlinepubs/009695399/functions/lio_listio.html
>
> Regards,
> Laurent
Thanks Laurent,
just forgot the whys here.
Sébastien.
next prev parent reply other threads:[~2007-01-24 11:54 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070117104601.36b2ab18@frecb000686>
2007-01-17 9:48 ` [PATCH -mm 1/5][AIO] - Rework compat_sys_io_submit Sébastien Dugué
2007-01-17 9:48 ` [PATCH -mm 2/5][AIO] - fix aio.h includes Sébastien Dugué
2007-01-17 9:49 ` [PATCH -mm 3/5][AIO] - Make good_sigevent non-static Sébastien Dugué
2007-01-17 9:50 ` [PATCH -mm 4/5][AIO] - AIO completion signal notification Sébastien Dugué
2007-01-24 5:35 ` Andrew Morton
2007-01-24 11:11 ` Sébastien Dugué
2007-01-25 5:42 ` Christoph Hellwig
2007-01-25 8:46 ` Sébastien Dugué
2007-01-17 9:55 ` [PATCH -mm 5/5][AIO] - Add listio syscall support Sébastien Dugué
2007-01-24 5:50 ` Andrew Morton
2007-01-24 11:51 ` Sébastien Dugué
2007-01-24 5:53 ` Andrew Morton
2007-01-24 9:52 ` Laurent Vivier
2007-01-24 11:53 ` Sébastien Dugué [this message]
2007-01-24 6:04 ` Andrew Morton
2007-01-24 12:02 ` Sébastien Dugué
2007-01-24 18:16 ` Bharata B Rao
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