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From:   David Howells <dhowells@redhat.com>
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References: <20180922132106.wfa6xaxwbu276qka@brauner.io> <20180921155455.flkf5vdrm3vgn6do@brauner.io> <20180920151214.15484-6-mszeredi@redhat.com> <20180920151214.15484-1-mszeredi@redhat.com> <17157.1537542475@warthog.procyon.org.uk> <20311.1537548756@warthog.procyon.org.uk>
To:     Christian Brauner <christian@brauner.io>
Cc:     dhowells@redhat.com, Miklos Szeredi <mszeredi@redhat.com>,
        Al Viro <viro@ZenIV.linux.org.uk>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5/6] fsmount: do not use legacy MS_ flags
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Date:   Sat, 22 Sep 2018 16:48:32 +0100
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Christian Brauner <christian@brauner.io> wrote:

> mount_setattr(int dfd, const char *path, unsigned int atflags,
>               unsigned int attr_cmd,
> 	      unsigned int attr_values,
> 	      unsigned int attr_mask);

Whilst you can have up to six arguments on a syscall, I seem to remember that
6-arg syscalls require special handlers on some systems due to register count.

David