From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:56107) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gs8OI-00065l-Gi for qemu-devel@nongnu.org; Fri, 08 Feb 2019 10:48:35 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gs8OH-00037F-Fc for qemu-devel@nongnu.org; Fri, 08 Feb 2019 10:48:34 -0500 Date: Fri, 8 Feb 2019 10:48:29 -0500 (EST) From: Pankaj Gupta Message-ID: <1900994795.70706540.1549640909215.JavaMail.zimbra@redhat.com> In-Reply-To: <20190208134950.187665-1-sgarzare@redhat.com> References: <20190208134950.187665-1-sgarzare@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v4 0/6] virtio-blk: add DISCARD and WRITE_ZEROES features List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stefano Garzarella Cc: qemu-devel@nongnu.org, Laurent Vivier , Kevin Wolf , Thomas Huth , Eduardo Habkost , qemu-block@nongnu.org, "Michael S. Tsirkin" , Stefan Hajnoczi , "Dr . David Alan Gilbert" , Max Reitz , Paolo Bonzini > > This series adds the support of DISCARD and WRITE_ZEROES commands > and extends the virtio-blk-test to test WRITE_ZEROES command when > the feature is enabled. > > v4: > - fixed error with mingw compiler in patch 4 > gcc and clang want %lu, but mingw wants %llu for BDRV_REQUEST_MAX_SECTORS. > Since is less than INT_MAX, I casted it to integer and I used %d in the > format string of error_setg. (mingw now is happy) > > v3: > - rebased on master (I removed Based-on tag since the new virtio headers from > linux v5.0-rc1 are merged) > - added patch 2 to add host_features field (as in virtio-net) [Michael] > - fixed patch 3 (previously 2/5) using the new host_features field > - fixed patch 4 (previously 3/5) following the Stefan's comments: > - fixed name of functions and fields > - used vdev and s pointers > - removed "wz-may-unmap" property > - split "dwz-max-sectors" in two properties > > v2: > - added patch 1 to use virtio_blk_handle_rw_error() with discard operation > - added patch 2 to make those new features machine-type dependent (thanks > David) > - fixed patch 3 (previously patch 1/2) adding more checks, block_acct_start() > for WRITE_ZEROES requests, and configurable parameters to > initialize the limits (max_sectors, wzeroes_may_unmap). > (thanks Stefan) > I moved in a new function the code to handle a single > segment, > in order to simplify the support of multiple segments in the > future. > - added patch 4 to change the assert on data_size following the discussion > with > Thomas, Changpeng, Michael, and Stefan (thanks all) > - fixed patch 5 (previously patch 2/2) using local dwz_hdr variable instead > of > dynamic allocation (thanks Thomas) > > Thanks, > Stefano > > Stefano Garzarella (6): > virtio-blk: add acct_failed param to virtio_blk_handle_rw_error() > virtio-blk: add host_features field in VirtIOBlock > virtio-blk: add "discard" and "write-zeroes" properties > virtio-blk: add DISCARD and WRITE_ZEROES features > tests/virtio-blk: change assert on data_size in virtio_blk_request() > tests/virtio-blk: add test for WRITE_ZEROES command > > hw/block/virtio-blk.c | 214 +++++++++++++++++++++++++++++++-- > hw/core/machine.c | 2 + > include/hw/virtio/virtio-blk.h | 5 +- > tests/virtio-blk-test.c | 75 +++++++++++- > 4 files changed, 282 insertions(+), 14 deletions(-) > > -- > 2.20.1 Don't know all of the details of qemu block related stuff. But overall patch series look good to me. Acked-by: Pankaj Gupta > > >