From: Marcel Holtmann <marcel@holtmann.org>
To: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-efi@vger.kernel.org,
Matthew Garrett <matthew.garrett@nebula.com>,
Jeremy Kerr <jk@ozlabs.org>,
Matt Fleming <matt.fleming@intel.com>,
Al Viro <viro@ZenIV.linux.org.uk>
Subject: Re: efivarfs and writev() support
Date: Wed, 11 Mar 2015 08:12:52 -0700 [thread overview]
Message-ID: <7F5112DD-6998-47D3-B6B9-5618E14E022A@holtmann.org> (raw)
In-Reply-To: <20150311134226.GB24174@codeblueprint.co.uk>
Hi Matt,
>> it seems that efivarfs only supports readv(), but when it comes to
>> writev(), I am getting an error. Is there any reason to not support
>> vectored write on this filesystem? Especially with the uint32 header
>> for each file, I think it would make perfect sense to support it.
>
> What error are you seeing? I thought that the vfs fell back to a looped
> write if the file system doesn't support .write_iter()?
that seems to work for readv(), but not for writev().
> But yes, we definitely should support writev().
I just get an EIO error and have not traced this down any further.
Regards
Marcel
next prev parent reply other threads:[~2015-03-11 15:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-08 22:24 efivarfs and writev() support Marcel Holtmann
2015-03-11 13:42 ` Matt Fleming
2015-03-11 15:12 ` Marcel Holtmann [this message]
2015-03-12 6:34 ` Al Viro
2015-03-12 14:58 ` Marcel Holtmann
2015-03-12 17:03 ` Al Viro
2015-03-14 16:33 ` Marcel Holtmann
2015-03-17 15:46 ` Matt Fleming
2015-03-17 16:03 ` Marcel Holtmann
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