Re: [PATCH 00/10] fallocate: introduce FALLOC_FL_WRITE_ZEROES flag
From: Martin K. Petersen
Date: Mon Jun 09 2025 - 21:48:12 EST
Zhang,
> Changes since RFC v4:
> - Rebase codes on 6.16-rc1.
> - Add a new queue_limit flag, and change the write_zeroes_unmap sysfs
> interface to RW mode. User can disable the unmap write zeroes
> operation by writing '0' to it when the operation is slow.
> - Modify the documentation of write_zeroes_unmap sysfs interface as
> Martin suggested.
> - Remove the statx interface.
> - Make the bdev and ext4 don't allow to submit FALLOC_FL_WRITE_ZEROES
> if the block device does not enable the unmap write zeroes operation,
> it should return -EOPNOTSUPP.
This looks OK to me as long as the fs folks agree on the fallocate()
semantics.
Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
--
Martin K. Petersen