Xiao Ni ceaf2966ab async_xor: increase src_offs when dropping destination page ... 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: 29bcff787a ("md/raid5: add new xor function to support different page offset") Cc: stable@vger.kernel.org # v5.10+ Signed-off-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org>		2021-04-26 10:06:12 -07:00
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async_memcpy.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335	2019-06-05 17:37:06 +02:00
async_pq.c	md/raid6: let syndrome computor support different page offset	2020-09-24 16:44:44 -07:00
async_raid6_recov.c	md/raid6: let async recovery function support different page offset	2020-09-24 16:44:44 -07:00
async_tx.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335	2019-06-05 17:37:06 +02:00
async_xor.c	async_xor: increase src_offs when dropping destination page	2021-04-26 10:06:12 -07:00
Kconfig	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
raid6test.c	md/raid6: let async recovery function support different page offset	2020-09-24 16:44:44 -07:00