On 2018-05-02 16:03, Max Reitz wrote: > Add BDRV_REQ_WRITE_UNCHANGED to the list of flags honored during pwrite > and pwrite_zeroes, and also add a note on when you absolutely need to > support it. > > Signed-off-by: Max Reitz <mre...@redhat.com> > --- > I did not include a note on how this might be useful to protocol > drivers, because BDRV_REQ_WRITE_UNCHANGED requests will usually not end > up on the protocol level anyway. > (I suppose it would be possible in theory if a protocol driver reports a > certain range as unallocated and the user installs a copy-on-read > driver on top, but I think every protocol driver currently reports > everything as allocated.) > --- > include/block/block_int.h | 18 ++++++++++++++++-- > 1 file changed, 16 insertions(+), 2 deletions(-)
Thanks for the review, applied to my block branch. Max
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