linux-kernel - Re: [PATCH 22/29] staging: lustre: llite: add LL_IOC_FUTIMES

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Date:   Sun, 30 Oct 2016 10:59:59 -0400
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     James Simmons <jsimmons@...radead.org>
Cc:     devel@...verdev.osuosl.org,
        Andreas Dilger <andreas.dilger@...el.com>,
        Oleg Drokin <oleg.drokin@...el.com>,
        "John L. Hammond" <john.hammond@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>
Subject: Re: [PATCH 22/29] staging: lustre: llite: add LL_IOC_FUTIMES_3

On Thu, Oct 27, 2016 at 06:11:56PM -0400, James Simmons wrote:
> From: John L. Hammond <john.hammond@...el.com>
> 
> Add a new regular file ioctl LL_IOC_FUTIMES_3 similar to futimes() but
> which allows setting of all three inode timestamps. Use this ioctl
> during HSM restore to ensure that the volatile file has the same
> timestamps as the file to be restored. Strengthen sanity-hsm test_24a
> to check that archive, release, and restore do not change a file's
> ctime. Add sanity-hsm test_24e to check that tar will succeed when it
> encounters a HSM released file.

This sounds odd, why is this filesystem the only one that needs a
"special" futimes?  Don't make up new syscalls by making an ioctl
please, make a new syscall if that's what you really need!

thanks,

greg k-h