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 3F7393FD156 for ; Fri, 27 Mar 2026 17:51:29 +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=1774633889; cv=none; b=fVFsHVfNFx+6vy3tubzFhEZMCBmZP77YTyCGqj9gJoGDth4O9D0SeKZSj1DjvzauainJXvUbvl03fySSD4PMtpH6UMx4f3S4WU8qA1XTD8GhSDzwJkQ2nxWv3xYQvjsQMNMto8Tc16A/rriPcmpyAd3UPQz0nr+Dad+VjOUR/Fk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774633889; c=relaxed/simple; bh=aRjLZ8pYf8np79SztJ05ocgdrIVaeCHubd3B6mA+Qkc=; h=Date:To:From:Subject:Message-Id; b=KprcVnarw3HbOgCQxeQ1PBPWwkM9j2sofFlz/NPpf9aT6MMeUs4gXHg8AR7HsDzxlzCwbwTopYGyg4NVgJ4ZTDTdBDviH8Y/BK2mRG+Z4saRjmOUpdRqEYDlolsFNmf2Lf5Vdyv/6TEdB40DlFDmP4dgOh3mJZEgeE4opHytsJE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=NQ3XKxUR; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="NQ3XKxUR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E17E4C19424; Fri, 27 Mar 2026 17:51:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1774633889; bh=aRjLZ8pYf8np79SztJ05ocgdrIVaeCHubd3B6mA+Qkc=; h=Date:To:From:Subject:From; b=NQ3XKxUR6/o/O5Wycnl9ydxf869Z9amoiXVwJm1L66CaiLJbNiG7FbBQ7EtX6queh PT5q8CFpHzxdGCdnmvPlqBqtOWOKlds9n194O4i2m3v2KbhM53NZdvh+Xr5dcjVwZD O4wVv7mY1gpd0Rb9NX1ryNv/cNUYQPbZvqk42Vc0= Date: Fri, 27 Mar 2026 10:51:28 -0700 To: mm-commits@vger.kernel.org,hch@lst.de,akpm@linux-foundation.org From: Andrew Morton Subject: + xor-add-a-better-public-api-2.patch added to mm-nonmm-unstable branch Message-Id: <20260327175128.E17E4C19424@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: xor: add a better public API has been added to the -mm mm-nonmm-unstable branch. Its filename is xor-add-a-better-public-api-2.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/xor-add-a-better-public-api-2.patch This patch will later appear in the mm-nonmm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Christoph Hellwig Subject: xor: add a better public API Date: Fri, 27 Mar 2026 07:16:55 +0100 xor_blocks is very annoying to use, because it is limited to 4 + 1 sources / destinations, has an odd argument order and is completely undocumented. Lift the code that loops around it from btrfs and async_tx/async_xor into common code under the name xor_gen and properly document it. Link: https://lkml.kernel.org/r/20260327061704.3707577-24-hch@lst.de Signed-off-by: Christoph Hellwig Cc: Albert Ou Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Andreas Larsson Cc: Anton Ivanov Cc: Ard Biesheuvel Cc: Arnd Bergmann Cc: "Borislav Petkov (AMD)" Cc: Catalin Marinas Cc: Chris Mason Cc: Christian Borntraeger Cc: Dan Williams Cc: David S. Miller Cc: David Sterba Cc: Heiko Carstens Cc: Herbert Xu Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Jason A. Donenfeld Cc: Johannes Berg Cc: Li Nan Cc: Madhavan Srinivasan Cc: Magnus Lindholm Cc: Matt Turner Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Richard Henderson Cc: Richard Weinberger Cc: Russell King Cc: Song Liu Cc: Sven Schnelle Cc: Ted Ts'o Cc: Vasily Gorbik Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton --- lib/raid/xor/xor-core.c | 2 ++ 1 file changed, 2 insertions(+) --- a/lib/raid/xor/xor-core.c~xor-add-a-better-public-api-2 +++ a/lib/raid/xor/xor-core.c @@ -65,6 +65,8 @@ void xor_gen(void *dest, void **srcs, un { unsigned int src_off = 0; + WARN_ON_ONCE(in_interrupt()); + WARN_ON_ONCE(bytes == 0); WARN_ON_ONCE(bytes & 511); while (src_cnt > 0) { _ Patches currently in -mm which might be from hch@lst.de are xor-assert-that-xor_blocks-is-not-call-from-interrupt-context.patch arm-xor-remove-in_interrupt-handling.patch arm64-xor-fix-conflicting-attributes-for-xor_block_template.patch um-xor-cleanup-xorh.patch xor-move-to-lib-raid.patch xor-small-cleanups.patch xor-cleanup-registration-and-probing.patch xor-split-xorh.patch xor-remove-macro-abuse-for-xor-implementation-registrations.patch xor-move-generic-implementations-out-of-asm-generic-xorh.patch alpha-move-the-xor-code-to-lib-raid.patch arm-move-the-xor-code-to-lib-raid.patch arm64-move-the-xor-code-to-lib-raid.patch loongarch-move-the-xor-code-to-lib-raid.patch powerpc-move-the-xor-code-to-lib-raid.patch riscv-move-the-xor-code-to-lib-raid.patch sparc-move-the-xor-code-to-lib-raid.patch s390-move-the-xor-code-to-lib-raid.patch x86-move-the-xor-code-to-lib-raid.patch xor-avoid-indirect-calls-for-arm64-optimized-ops.patch xor-make-xorko-self-contained-in-lib-raid.patch xor-add-a-better-public-api.patch xor-add-a-better-public-api-2.patch async_xor-use-xor_gen.patch btrfs-use-xor_gen.patch xor-pass-the-entire-operation-to-the-low-level-ops.patch xor-use-static_call-for-xor_gen.patch xor-add-a-kunit-test-case.patch