From patchwork Tue Apr 30 15:42:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 10923929 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F422614B6 for ; Tue, 30 Apr 2019 16:12:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E48C828C7F for ; Tue, 30 Apr 2019 16:12:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D94A728C9B; Tue, 30 Apr 2019 16:12:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 73BA328BEB for ; Tue, 30 Apr 2019 16:12:08 +0000 (UTC) Received: from localhost ([127.0.0.1]:49260 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hLVMV-00074Y-Lc for patchwork-qemu-devel@patchwork.kernel.org; Tue, 30 Apr 2019 12:12:07 -0400 Received: from eggs.gnu.org ([209.51.188.92]:48958) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hLUuw-00088z-3e for qemu-devel@nongnu.org; Tue, 30 Apr 2019 11:43:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hLUuu-0002Ay-H8 for qemu-devel@nongnu.org; Tue, 30 Apr 2019 11:43:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49848) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hLUup-00025q-Pe; Tue, 30 Apr 2019 11:43:32 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D547A2D800; Tue, 30 Apr 2019 15:43:30 +0000 (UTC) Received: from linux.fritz.box.com (unknown [10.36.118.15]) by smtp.corp.redhat.com (Postfix) with ESMTP id E24F44D5; Tue, 30 Apr 2019 15:43:29 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Tue, 30 Apr 2019 17:42:36 +0200 Message-Id: <20190430154244.30083-20-kwolf@redhat.com> In-Reply-To: <20190430154244.30083-1-kwolf@redhat.com> References: <20190430154244.30083-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Tue, 30 Apr 2019 15:43:30 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 19/27] block/qed: use buffer-based io X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Vladimir Sementsov-Ogievskiy Move to _co_ versions of io functions qed_read_table() and qed_write_table(), as we use qemu_co_mutex_unlock() anyway. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Stefan Hajnoczi Reviewed-by: Stefano Garzarella Signed-off-by: Kevin Wolf --- block/qed-table.c | 12 +++++------- block/qed.c | 6 ++---- 2 files changed, 7 insertions(+), 11 deletions(-) diff --git a/block/qed-table.c b/block/qed-table.c index c497bd4aec..cf30edd977 100644 --- a/block/qed-table.c +++ b/block/qed-table.c @@ -21,22 +21,22 @@ /* Called with table_lock held. */ static int qed_read_table(BDRVQEDState *s, uint64_t offset, QEDTable *table) { - QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF( - qiov, table->offsets, s->header.cluster_size * s->header.table_size); + unsigned int bytes = s->header.cluster_size * s->header.table_size; + int noffsets; int i, ret; trace_qed_read_table(s, offset, table); qemu_co_mutex_unlock(&s->table_lock); - ret = bdrv_preadv(s->bs->file, offset, &qiov); + ret = bdrv_co_pread(s->bs->file, offset, bytes, table->offsets, 0); qemu_co_mutex_lock(&s->table_lock); if (ret < 0) { goto out; } /* Byteswap offsets */ - noffsets = qiov.size / sizeof(uint64_t); + noffsets = bytes / sizeof(uint64_t); for (i = 0; i < noffsets; i++) { table->offsets[i] = le64_to_cpu(table->offsets[i]); } @@ -66,7 +66,6 @@ static int qed_write_table(BDRVQEDState *s, uint64_t offset, QEDTable *table, unsigned int sector_mask = BDRV_SECTOR_SIZE / sizeof(uint64_t) - 1; unsigned int start, end, i; QEDTable *new_table; - QEMUIOVector qiov; size_t len_bytes; int ret; @@ -79,7 +78,6 @@ static int qed_write_table(BDRVQEDState *s, uint64_t offset, QEDTable *table, len_bytes = (end - start) * sizeof(uint64_t); new_table = qemu_blockalign(s->bs, len_bytes); - qemu_iovec_init_buf(&qiov, new_table->offsets, len_bytes); /* Byteswap table */ for (i = start; i < end; i++) { @@ -91,7 +89,7 @@ static int qed_write_table(BDRVQEDState *s, uint64_t offset, QEDTable *table, offset += start * sizeof(uint64_t); qemu_co_mutex_unlock(&s->table_lock); - ret = bdrv_pwritev(s->bs->file, offset, &qiov); + ret = bdrv_co_pwrite(s->bs->file, offset, len_bytes, new_table->offsets, 0); qemu_co_mutex_lock(&s->table_lock); trace_qed_write_table_cb(s, table, flush, ret); if (ret < 0) { diff --git a/block/qed.c b/block/qed.c index 89af05d524..912edaf56a 100644 --- a/block/qed.c +++ b/block/qed.c @@ -113,15 +113,13 @@ static int coroutine_fn qed_write_header(BDRVQEDState *s) int nsectors = DIV_ROUND_UP(sizeof(QEDHeader), BDRV_SECTOR_SIZE); size_t len = nsectors * BDRV_SECTOR_SIZE; uint8_t *buf; - QEMUIOVector qiov; int ret; assert(s->allocating_acb || s->allocating_write_reqs_plugged); buf = qemu_blockalign(s->bs, len); - qemu_iovec_init_buf(&qiov, buf, len); - ret = bdrv_co_preadv(s->bs->file, 0, qiov.size, &qiov, 0); + ret = bdrv_co_pread(s->bs->file, 0, len, buf, 0); if (ret < 0) { goto out; } @@ -129,7 +127,7 @@ static int coroutine_fn qed_write_header(BDRVQEDState *s) /* Update header */ qed_header_cpu_to_le(&s->header, (QEDHeader *) buf); - ret = bdrv_co_pwritev(s->bs->file, 0, qiov.size, &qiov, 0); + ret = bdrv_co_pwrite(s->bs->file, 0, len, buf, 0); if (ret < 0) { goto out; }