[Drbd-dev] RFC: remove REQ_OP_WRITE_SAME

Christoph Hellwig hch at lst.de
Mon Apr 10 18:07:59 CEST 2017

Now that we are using REQ_OP_WRITE_ZEROES for all zeroing needs in the
kernel there is very little use left for REQ_OP_WRITE_SAME.  We only
have two callers left, and both just export optional protocol features
to remote systems: DRBD and the target code.

Do we have any major users of those?  If not removing it will clean up
a few warts in the block layer.

    git://git.infradead.org/users/hch/block.git delete-write-same



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