Call the BLKDISCARD ioctl to mark the whole disk as unused before creating
a new filesystem. This will allow SSDs, Arrays with thin provisioning support
and virtual machines to make smarter allocation decisions.
Add a new -K option to prevent mkfs from discarding blocks to aid
trouble-shooting or specialized requirements.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Andi Kleen <andi@firstfloor.org>
projects / thirdparty / xfsprogs-dev.git / commit
