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async_xor: use xor_gen

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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 <hch@lst.de>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Tested-by: Eric Biggers <ebiggers@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: David Sterba <dsterba@suse.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Li Nan <linan122@huawei.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Song Liu <song@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Christoph Hellwig
2026-03-27 07:16:56 +01:00
committed by Andrew Morton
parent e420f0a88b
commit 7c12c32b9f
1 changed files with 10 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
crypto/async_tx/async_xor.c
View File

@@ -103,7 +103,6 @@ do_sync_xor_offs(struct page *dest, unsigned int offset,
{
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, unsigned int offset,
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_device *device, unsigned int offset,
*
* 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