On Fri, Mar 4, 2016 at 4:55 PM, Darrick J. Wong <darrick.wong@xxxxxxxxxx> wrote:
>
> This is a redesign of the patch series that fixes various interface
> problems with the existing "zero out this part of a block device"
> code. BLKZEROOUT2 is gone.
I replied to two of the patches with small nits, but on the whole I
like it. The only nit that I think is serious is that you shouldn't be
requiring people to have to use FALLOC_FL_KEEP_SIZE.
If anything, you might just change that logic to say: If
FALLOC_FL_KEEP_SIZE is set, then we truncate the hole punching/zeroing
to the size of the device. So people could do something like
fallocate(fd,
FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE,
0, ~0);
to trim the whole device (and if FALLOC_FL_KEEP_SIZE isn't set, then
the above would be an error simply because the requested hole was
bigger than the device)
Linus
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