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Fri, 08 Nov 2019 04:36:39 -0500 Received: from cmccmta2.chinamobile.com ([221.176.66.80]:26086) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iT0gx-0002Cv-Fu; Fri, 08 Nov 2019 04:36:32 -0500 Received: from spf.mail.chinamobile.com (unknown[172.16.121.3]) by rmmx-syy-dmz-app07-12007 (RichMail) with SMTP id 2ee75dc536d81fa-857d8; Fri, 08 Nov 2019 17:35:20 +0800 (CST) Received: from localhost.novalocal (unknown[112.25.65.41]) by rmsmtp-syy-appsvr02-12002 (RichMail) with SMTP id 2ee25dc536d2c26-16e4c; Fri, 08 Nov 2019 17:35:19 +0800 (CST) X-RM-TRANSID: 2ee75dc536d81fa-857d8 X-RM-TagInfo: emlType=0 X-RM-SPAM-FLAG: 00000000 X-RM-TRANSID: 2ee25dc536d2c26-16e4c From: Yaowei Bai To: pbonzini@redhat.com, fam@euphon.net, dillaman@redhat.com, kwolf@redhat.com, mreitz@redhat.com Subject: [PATCH 4/4 V2] scsi-disk: add FUA support for COMPARE_AND_WRITE Date: Fri, 8 Nov 2019 17:35:41 +0800 Message-Id: <1573205741-2094-5-git-send-email-baiyaowei@cmss.chinamobile.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1573205741-2094-1-git-send-email-baiyaowei@cmss.chinamobile.com> References: <1573205741-2094-1-git-send-email-baiyaowei@cmss.chinamobile.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 221.176.66.80 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: baiyaowei@cmss.chinamobile.com, yangjun@cmss.chinamobile.com, qemu-devel@nongnu.org, qemu-block@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" It is implemented in the blk_aio_pwritev's callback function in a way similar to its emulation in scsi_write_do_fua function Signed-off-by: Yaowei Bai --- hw/scsi/scsi-disk.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c index f9a0267..0731a3b 100644 --- a/hw/scsi/scsi-disk.c +++ b/hw/scsi/scsi-disk.c @@ -229,6 +229,7 @@ static bool scsi_is_cmd_fua(SCSICommand *cmd) case WRITE_10: case WRITE_12: case WRITE_16: + case COMPARE_AND_WRITE: return (cmd->buf[1] & 8) !=3D 0; =20 case VERIFY_10: @@ -1850,10 +1851,17 @@ static void scsi_compare_and_write_complete(void *o= paque, int ret) } =20 block_acct_done(blk_get_stats(s->qdev.conf.blk), &r->acct); + if (r->need_fua_emulation) { + block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0, + BLOCK_ACCT_FLUSH); + r->req.aiocb =3D blk_aio_flush(s->qdev.conf.blk, scsi_aio_complete= , r); + goto free; + } scsi_req_complete(&r->req, GOOD); =20 done: scsi_req_unref(&r->req); +free: qemu_vfree(data->iov.iov_base); g_free(data); aio_context_release(blk_get_aio_context(s->qdev.conf.blk)); @@ -1954,6 +1962,7 @@ static int32_t scsi_disk_emulate_command(SCSIRequest = *req, uint8_t *buf) { SCSIDiskReq *r =3D DO_UPCAST(SCSIDiskReq, req, req); SCSIDiskState *s =3D DO_UPCAST(SCSIDiskState, qdev, req->dev); + SCSIDiskClass *sdc =3D (SCSIDiskClass *) object_get_class(OBJECT(s)); uint64_t nb_sectors; uint8_t *outbuf; int buflen; @@ -2209,6 +2218,7 @@ static int32_t scsi_disk_emulate_command(SCSIRequest = *req, uint8_t *buf) return 0; } assert(!r->req.aiocb); + r->need_fua_emulation =3D sdc->need_fua_emulation(&r->req.cmd); r->iov.iov_len =3D MIN(r->buflen, req->cmd.xfer); if (r->iov.iov_len =3D=3D 0) { scsi_req_complete(&r->req, GOOD); --=20 1.8.3.1