kernel/crypto/async_tx/async_xor.c, branch linux-rolling-lts

async_xor: Remove unused 'async_xor_val'

2025-03-15T07:08:53Z

async_xor_val has been unused since commit a7c224a820c3 ("md/raid5: convert to new xor compution interface") Remove it. Signed-off-by: Dr. David Alan Gilbert Signed-off-by: Herbert Xu

crypto: cleanup comments

2022-03-02T22:49:20Z

For spdx /* */ for *.h, // for *.c Space before spdx tag Replacements paramenters to parameters aymmetric to asymmetric sigature to signature boudary to boundary compliled to compiled eninges to engines explicity to explicitly Signed-off-by: Tom Rix Acked-by: Jarkko Sakkinen Signed-off-by: Herbert Xu

async_xor: check src_offs is not NULL before updating it

2021-06-11T02:40:14Z

When PAGE_SIZE is greater than 4kB, multiple stripes may share the same page. Thus, src_offs is added to async_xor_offs() with array of offsets. However, async_xor() passes NULL src_offs to async_xor_offs(). In such case, src_offs should not be updated. Add a check before the update. Fixes: ceaf2966ab08(async_xor: increase src_offs when dropping destination page) Cc: stable@vger.kernel.org # v5.10+ Reported-by: Oleksandr Shchirskyi Tested-by: Oleksandr Shchirskyi Signed-off-by: Xiao Ni Signed-off-by: Song Liu

async_xor: increase src_offs when dropping destination page

2021-04-26T17:06:12Z

Now we support sharing one page if PAGE_SIZE is not equal stripe size. To support this, it needs to support calculating xor value with different offsets for each r5dev. One offset array is used to record those offsets. In RMW mode, parity page is used as a source page. It sets ASYNC_TX_XOR_DROP_DST before calculating xor value in ops_run_prexor5. So it needs to add src_list and src_offs at the same time. Now it only needs src_list. So the xor value which is calculated is wrong. It can cause data corruption problem. I can reproduce this problem 100% on a POWER8 machine. The steps are: mdadm -CR /dev/md0 -l5 -n3 /dev/sdb1 /dev/sdc1 /dev/sdd1 --size=3G mkfs.xfs /dev/md0 mount /dev/md0 /mnt/test mount: /mnt/test: mount(2) system call failed: Structure needs cleaning. Fixes: 29bcff787a25 ("md/raid5: add new xor function to support different page offset") Cc: stable@vger.kernel.org # v5.10+ Signed-off-by: Xiao Ni Signed-off-by: Song Liu

md/raid5: add new xor function to support different page offset

2020-09-24T23:44:44Z

raid5 will call async_xor() and async_xor_val() to compute xor. For now, both of them require the common src/dst page offset. But, we want them to support different src/dst page offset for following shared page. Here, adding two new function async_xor_offs() and async_xor_val_offs() respectively for async_xor() and async_xor_val(). Signed-off-by: Yufen Yu Signed-off-by: Song Liu

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335

2019-06-05T15:37:06Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin st fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 111 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Alexios Zavras Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.567572064@linutronix.de Signed-off-by: Greg Kroah-Hartman

async_tx: use GFP_NOWAIT rather than GFP_IO

2016-01-07T05:36:18Z

These async_XX functions are called from md/raid5 in an atomic section, between get_cpu() and put_cpu(), so they must not sleep. So use GFP_NOWAIT rather than GFP_IO. Dan Williams writes: Longer term async_tx needs to be merged into md directly as we can allocate this unmap data statically per-stripe rather than per request. Fixed: 7476bd79fc01 ("async_pq: convert to dmaengine_unmap_data") Cc: stable@vger.kernel.org (v3.13+) Reported-and-tested-by: Stanislav Samsonov Acked-by: Dan Williams Signed-off-by: NeilBrown Signed-off-by: Vinod Koul

dmaengine: fix xor sources continuation

2014-08-21T17:20:52Z

the partial xor result must be kept until the next tx is generated. Cc: Signed-off-by: Xuelin Shi Signed-off-by: Dan Williams

dmaengine: remove DMA unmap flags

2013-11-14T19:04:38Z

Remove no longer needed DMA unmap flags: - DMA_COMPL_SKIP_SRC_UNMAP - DMA_COMPL_SKIP_DEST_UNMAP - DMA_COMPL_SRC_UNMAP_SINGLE - DMA_COMPL_DEST_UNMAP_SINGLE Cc: Vinod Koul Cc: Tomasz Figa Cc: Dave Jiang Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Kyungmin Park Acked-by: Jon Mason Acked-by: Mark Brown [djbw: clean up straggling skip unmap flags in ntb] Signed-off-by: Dan Williams

async_xor_val: convert to dmaengine_unmap_data

2013-11-14T19:01:30Z

Use the generic unmap object to unmap dma buffers. Cc: Vinod Koul Cc: Tomasz Figa Cc: Dave Jiang Reported-by: Bartlomiej Zolnierkiewicz [bzolnier: minor cleanups] Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Kyungmin Park Signed-off-by: Dan Williams