linux-kernel - Re: [PATCH] [RFC] Remove bdflush syscall stub

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Message-ID: <20190528104017.GA11969@rei>
Date:   Tue, 28 May 2019 12:40:18 +0200
From:   Cyril Hrubis <chrubis@...e.cz>
To:     Andreas Schwab <schwab@...ux-m68k.org>
Cc:     lkml <linux-kernel@...r.kernel.org>, linux-alpha@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-ia64@...r.kernel.org,
        linux-m68k@...ts.linux-m68k.org, Michal Simek <monstr@...str.eu>,
        linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-xtensa@...ux-xtensa.org, linux-fsdevel@...r.kernel.org,
        linux-api@...r.kernel.org
Subject: Re: [PATCH] [RFC] Remove bdflush syscall stub

Hi!
> > I've tested the patch on i386. Before the patch calling bdflush() with
> > attempt to tune a variable returned 0 and after the patch the syscall
> > fails with EINVAL.
> 
> Should be ENOSYS, doesn't it?

My bad, the LTP syscall wrapper handles ENOSYS and produces skipped
results based on that.

EINVAL is what you get for not yet implemented syscalls, i.e. new
syscall on old kernel.

-- 
Cyril Hrubis
chrubis@...e.cz