On 5/12/22 06:48, Ming Lei wrote:
Commit f278eb3d8178 ("block: hold ->invalidate_lock in blkdev_fallocate")
adds ->invalidate_lock in blkdev_fallocate() for preventing stale data
from being read during fallocate().
However, the side effect is that blkdev_fallocate() becomes serialized
since blkdev_fallocate() always blocks.
Add one atomic fallocate counter for allowing blkdev_fallocate() to
be run concurrently so that discard/write_zero bios from different
fallocate() can be submitted in parallel.
Please consider adding a "Fixes:" tag since otherwise this patch won't
be integrated automatically into any of the stable kernel trees.
Thanks,
Bart.
