From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C5E61324705; Sun, 25 Jan 2026 16:28:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769358538; cv=none; b=S6rQZ4thj041JlbJv/gF3YRMRHEUzribHzlyKX7srGkbpX7skfIYhDuxLEcFhGP+xISrVyAebPelhSjeFr9OHHrKuraFKih6eDjqsHJkU7zMuh5afs3woQbLKZXp6jOaDShj2iIEMSJBmuGc3gxxs/MAud5FOCorFYruX2iBfbg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769358538; c=relaxed/simple; bh=uUf5K6sIJxtZKYBSNZl6uA7suaAZn2gSos819EsSZuU=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=hHtu+8M0oOK32WCzAUrwubG9v3/oC6GApeacWv2N1HAa25a++ZUk1YWcK0jo9vB2Cr3IJ4tGthlBktPM/FthOjoi5dbaTs6+VIb+0wQwaQ1oA4HQs5Qod62sesEY4HjregPPruUnMukWdiKT0z8c5thMrvXtTQBMSXJcWaxns6w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bqLnXgkS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="bqLnXgkS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 64CF9C4CEF1; Sun, 25 Jan 2026 16:28:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769358538; bh=uUf5K6sIJxtZKYBSNZl6uA7suaAZn2gSos819EsSZuU=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=bqLnXgkSiHL3Flulju+vFOny+1wmjsfIGYPr1qavjPnNLo0EGSFno1NdebqHFKvd9 M6D6JnhtQQ9n05BTxHD83Oo0FMpDKgLwkggDVk/u/t1/KmIimUpa7OVFrs1vJD5sjb CiGMKRYc7bI9ESjkGJOCHevGP9FlYPcagxO0f35rOvuBJa0+2kHuejay9XJpRlOmTE YRA9CqjzN52eBdF/xFSVRgjZ9kCxc/d8VuNugRrVyO5MWyhNOOSyyYUwjZqKtuzrk7 N9R1XkhrdlGuwN1gO6n5y0/k0ynzGD1kVptACngoF3r1qgR5cRhv4zkD0SBUMDjM7Q 2MD8oUvEuZqGQ== Message-ID: <20b25d6cc8a6ba04f77b2518d3d4f0154be58f13.camel@kernel.org> Subject: Re: [PATCH 1/2] open: new O_REGULAR flag support From: Jeff Layton To: Dorjoy Chowdhury , Arnd Bergmann Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Alexander Viro , Christian Brauner , Jan Kara , Chuck Lever , Alexander Aring Date: Sun, 25 Jan 2026 11:28:56 -0500 In-Reply-To: References: <20260125141518.59493-1-dorjoychy111@gmail.com> <20260125141518.59493-2-dorjoychy111@gmail.com> <57fe666f-f451-462f-8f16-8c0ba83f1eac@app.fastmail.com> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV 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Sun, 2026-01-25 at 21:41 +0600, Dorjoy Chowdhury wrote: > On Sun, Jan 25, 2026 at 8:40=E2=80=AFPM Arnd Bergmann wro= te: > >=20 > > On Sun, Jan 25, 2026, at 15:14, Dorjoy Chowdhury wrote: > >=20 > > > diff --git a/include/uapi/asm-generic/errno-base.h > > > b/include/uapi/asm-generic/errno-base.h > > > index 9653140bff92..ea9a96d30737 100644 > > > --- a/include/uapi/asm-generic/errno-base.h > > > +++ b/include/uapi/asm-generic/errno-base.h > > > @@ -36,5 +36,6 @@ > > > #define EPIPE 32 /* Broken pipe */ > > > #define EDOM 33 /* Math argument out of domain = of func */ > > > #define ERANGE 34 /* Math result not representabl= e */ > > > +#define ENOTREGULAR 35 /* Not a regular file */ > >=20 > > This clashes with EDEADLK on most architectures, or with > > EAGAIN on alpha and ENOMSG on mips/parisc. You probably > > need to pick the next free value in uapi/asm-generic/errno.h > > and arch/*/include/uapi/asm/errno.h and keep this sorted > > after EHWPOISON if you can't find an existing error code. > >=20 >=20 > Thanks for pointing this out. I will fix up in v2 along with other > comments (if any). I looked at the existing error codes in > uapi/asm-generic/errno.h and didn't notice anything that I could > reuse. So if I understand correctly, I will need this new error code > in both uapi/asm-generic/errno.h (not in errno-base.h) and in > arch/*/include/uapi/asm/errno.h (I see some parallel > tools/arch/*/include/uapi/asm/errno.h files too) just after EHWPOISON, > right? >=20 nit: Can we call this this ENOTREG instead of ENOTREGULAR? That seems like it would read better alongside ENOTDIR and I hate extra typing. > > > diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-gene= ric/fcntl.h > > > index 613475285643..11e5eadab868 100644 > > > --- a/include/uapi/asm-generic/fcntl.h > > > +++ b/include/uapi/asm-generic/fcntl.h > > > @@ -88,6 +88,10 @@ > > > #define __O_TMPFILE 020000000 > > > #endif > > >=20 > > > +#ifndef O_REGULAR > > > +#define O_REGULAR 040000000 > > > +#endif > >=20 > > This in turn clashes with O_PATH on alpha, __O_TMPFILE on > > parisc, and __O_SYNC on sparc. We can probably fill the holes > > in asm/fcntl.h to define this. > >=20 >=20 > And for this, I will need to just define O_REGULAR in alpha, parisc > and sparc too, right? > Good catch on the sparc file, some are octal, some are hexadecimal, > easy to miss. Thanks! >=20 >=20 --=20 Jeff Layton