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authorDavid Woodhouse <David.Woodhouse@intel.com>2008-08-11 15:58:42 +0100
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:02 +0200
commitd30a2605be9d5132d95944916e8f578fcfe4f976 (patch)
tree91a8161cb09536ab838ef47fceabb0da0bea9256 /block/blk-merge.c
parent2ebca85abcfcbaaf1c0b242e39fc88ad3da90090 (diff)
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Add BLKDISCARD ioctl to allow userspace to discard sectors
We may well want mkfs tools to use this to mark the whole device as unwanted before they format it, for example. The ioctl takes a pair of uint64_ts, which are start offset and length in _bytes_. Although at the moment it might make sense for them both to be in 512-byte sectors, I don't want to limit the ABI to that. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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