在 2023/3/23 7:12, Andrew Morton 写道:
On Wed, 22 Mar 2023 07:25:58 +0000 Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx> wrote:
In an dedupe corporation iter loop, the length of iomap_iter decreases
because it implies the remaining length after each iteration. The
compare function should use the min length of the current iters, not the
total length.
Please describe the user-visible runtime effects of this flaw, thanks.
This patch fixes fail of generic/561, with test config:
export TEST_DEV=/dev/pmem0
export TEST_DIR=/mnt/test
export SCRATCH_DEV=/dev/pmem1
export SCRATCH_MNT=/mnt/scratch
export MKFS_OPTIONS="-m reflink=1,rmapbt=1"
export MOUNT_OPTIONS="-o dax"
export XFS_MOUNT_OPTIONS="-o dax"
--
Thanks,
Ruan.
