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 B2E4F3FF8BF for ; Fri, 27 Mar 2026 17:51:31 +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=1774633891; cv=none; b=n4GiKlFKRocJb56qq06tUSOgv3jUmaChnEY94GIK7uwyK8JwednnADGjUBq8aDgdQzpkfL/wL+HBJof3D0Sz3tZNyzAmL9ZLKfStrhQSJ9ZdNeHrWGDulTbxWCOkz+KgCA/Qc4/cDUlpeRWPcKqD7mOmoZzvcfXDTCgtxSn1VCs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774633891; c=relaxed/simple; bh=NNEcz1mIOFpjtLdNxb0HPzHk2WMf+DvZXAtdRlqPeYw=; h=Date:To:From:Subject:Message-Id; b=U5onKMoP3mVpYm5S/lQsMPXkZ3kyD209MLYvhM9o8XMoqfwhLaGTmDEdM2+6dKwdYklTJKSLavHGQKdFJCsbk30l0pik1zx2sPKNSanVAm9pPH27M/01YhyHWd3axSyvNvuMg58xmwW05KnBmgYv26KZRAdKOemAQiw+JzLEP6Y= 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=1XXpDv87; 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="1XXpDv87" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5138FC19423; Fri, 27 Mar 2026 17:51:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1774633891; bh=NNEcz1mIOFpjtLdNxb0HPzHk2WMf+DvZXAtdRlqPeYw=; h=Date:To:From:Subject:From; b=1XXpDv87hKRm05GwbbjYad97wdMCi03WNG//anPEczOTX8NdXrwglryf319z4ytoD VykMFu3T+Yc2X3qMIY/Pu/6GgaXbxhqpHzussXeCrX1WxL1M2IkVPilfqQKCEfByXa Z9y80W+sow88tXI8oiwMUgMbDQqBGUZLyeiRZkS0= Date: Fri, 27 Mar 2026 10:51:30 -0700 To: mm-commits@vger.kernel.org,hch@lst.de,akpm@linux-foundation.org From: Andrew Morton Subject: + async_xor-use-xor_gen.patch added to mm-nonmm-unstable branch Message-Id: <20260327175131.5138FC19423@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: async_xor: use xor_gen has been added to the -mm mm-nonmm-unstable branch. Its filename is async_xor-use-xor_gen.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/async_xor-use-xor_gen.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: async_xor: use xor_gen Date: Fri, 27 Mar 2026 07:16:56 +0100 Replace use of the loop around xor_blocks with the easier to use xor_gen API. Link: https://lkml.kernel.org/r/20260327061704.3707577-25-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 --- crypto/async_tx/async_xor.c | 34 ++++++++++------------------------ 1 file changed, 10 insertions(+), 24 deletions(-) --- a/crypto/async_tx/async_xor.c~async_xor-use-xor_gen +++ a/crypto/async_tx/async_xor.c @@ -103,7 +103,6 @@ do_sync_xor_offs(struct page *dest, unsi { int i; int xor_src_cnt = 0; - int src_off = 0; void *dest_buf; void **srcs; @@ -117,23 +116,12 @@ do_sync_xor_offs(struct page *dest, unsi if (src_list[i]) srcs[xor_src_cnt++] = page_address(src_list[i]) + (src_offs ? src_offs[i] : offset); - src_cnt = xor_src_cnt; + /* set destination address */ dest_buf = page_address(dest) + offset; - if (submit->flags & ASYNC_TX_XOR_ZERO_DST) memset(dest_buf, 0, len); - - while (src_cnt > 0) { - /* process up to 'MAX_XOR_BLOCKS' sources */ - xor_src_cnt = min(src_cnt, MAX_XOR_BLOCKS); - xor_blocks(xor_src_cnt, len, dest_buf, &srcs[src_off]); - - /* drop completed sources */ - src_cnt -= xor_src_cnt; - src_off += xor_src_cnt; - } - + xor_gen(dest_buf, srcs, xor_src_cnt, len); async_tx_sync_epilog(submit); } @@ -168,11 +156,10 @@ dma_xor_aligned_offsets(struct dma_devic * * honored flags: ASYNC_TX_ACK, ASYNC_TX_XOR_ZERO_DST, ASYNC_TX_XOR_DROP_DST * - * xor_blocks always uses the dest as a source so the - * ASYNC_TX_XOR_ZERO_DST flag must be set to not include dest data in - * the calculation. The assumption with dma engines is that they only - * use the destination buffer as a source when it is explicitly specified - * in the source list. + * xor_gen always uses the dest as a source so the ASYNC_TX_XOR_ZERO_DST flag + * must be set to not include dest data in the calculation. The assumption with + * dma engines is that they only use the destination buffer as a source when it + * is explicitly specified in the source list. * * src_list note: if the dest is also a source it must be at index zero. * The contents of this array will be overwritten if a scribble region @@ -259,11 +246,10 @@ EXPORT_SYMBOL_GPL(async_xor_offs); * * honored flags: ASYNC_TX_ACK, ASYNC_TX_XOR_ZERO_DST, ASYNC_TX_XOR_DROP_DST * - * xor_blocks always uses the dest as a source so the - * ASYNC_TX_XOR_ZERO_DST flag must be set to not include dest data in - * the calculation. The assumption with dma engines is that they only - * use the destination buffer as a source when it is explicitly specified - * in the source list. + * xor_gen always uses the dest as a source so the ASYNC_TX_XOR_ZERO_DST flag + * must be set to not include dest data in the calculation. The assumption with + * dma engines is that they only use the destination buffer as a source when it + * is explicitly specified in the source list. * * src_list note: if the dest is also a source it must be at index zero. * The contents of this array will be overwritten if a scribble region _ 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