From patchwork Tue Feb 2 22:45:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Blake X-Patchwork-Id: 1435012 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=CIUGbCoq; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4DVgNd6djBz9tD4 for ; Wed, 3 Feb 2021 10:04:01 +1100 (AEDT) Received: from localhost ([::1]:35330 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l74iF-0003bU-NN for incoming@patchwork.ozlabs.org; Tue, 02 Feb 2021 18:03:59 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:40588) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l74Qz-0007l5-I3 for qemu-devel@nongnu.org; Tue, 02 Feb 2021 17:46:09 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:43059) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1l74Qh-0005yC-IJ for qemu-devel@nongnu.org; Tue, 02 Feb 2021 17:46:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1612305950; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=knzTmtfTAH/MVCyM2gVYqPTsxDBlrsUYAd4+X4phvZY=; b=CIUGbCoq39mpjUROl1h4pK5IW+Nh79GZeHx2wrzwuDhRKrW6Qcu6euWyJteJbDefJbEzi4 xAYuzc2YvJzwKVKnFxUMaf/7RmVPHyaEg5OchWJce8m6wA/VKx5BjbQThIw6ZmlzzdUTva 55ClltEkE3bP+cvumFG9MmRsJ0BEo4w= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-304-aZWMxTltPT2xrj8tFuNxDQ-1; Tue, 02 Feb 2021 17:45:48 -0500 X-MC-Unique: aZWMxTltPT2xrj8tFuNxDQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id AD85E107ACE3; Tue, 2 Feb 2021 22:45:47 +0000 (UTC) Received: from blue.redhat.com (ovpn-112-103.phx2.redhat.com [10.3.112.103]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1F36510016F9; Tue, 2 Feb 2021 22:45:47 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Subject: [PULL 16/20] block/io: support int64_t bytes in read/write wrappers Date: Tue, 2 Feb 2021 16:45:25 -0600 Message-Id: <20210202224529.642055-17-eblake@redhat.com> In-Reply-To: <20210202224529.642055-1-eblake@redhat.com> References: <20210202224529.642055-1-eblake@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eblake@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.386, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action 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: Kevin Wolf , Fam Zheng , Vladimir Sementsov-Ogievskiy , "open list:blkverify" , Max Reitz , Stefan Hajnoczi Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Vladimir Sementsov-Ogievskiy We are generally moving to int64_t for both offset and bytes parameters on all io paths. Main motivation is realization of 64-bit write_zeroes operation for fast zeroing large disk chunks, up to the whole disk. We chose signed type, to be consistent with off_t (which is signed) and with possibility for signed return type (where negative value means error). Now, since bdrv_co_preadv_part() and bdrv_co_pwritev_part() have been updated, update all their wrappers. For all of them type of 'bytes' is widening, so callers are safe. We have update request_fn in blkverify.c simultaneously. Still it's just a pointer to one of bdrv_co_pwritev() or bdrv_co_preadv(), and type is widening for callers of the request_fn anyway. Signed-off-by: Vladimir Sementsov-Ogievskiy Message-Id: <20201211183934.169161-16-vsementsov@virtuozzo.com> Reviewed-by: Eric Blake [eblake: grammar tweak] Signed-off-by: Eric Blake --- include/block/block.h | 11 ++++++----- include/block/block_int.h | 4 ++-- block/io.c | 15 ++++++++------- block/blkverify.c | 2 +- block/trace-events | 2 +- 5 files changed, 18 insertions(+), 16 deletions(-) diff --git a/include/block/block.h b/include/block/block.h index 81fcaad5acca..5f28d0d33f5c 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -392,12 +392,13 @@ int bdrv_reopen_prepare(BDRVReopenState *reopen_state, void bdrv_reopen_commit(BDRVReopenState *reopen_state); void bdrv_reopen_abort(BDRVReopenState *reopen_state); int bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset, - int bytes, BdrvRequestFlags flags); + int64_t bytes, BdrvRequestFlags flags); int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags); -int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int bytes); -int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf, int bytes); +int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes); +int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf, + int64_t bytes); int bdrv_pwrite_sync(BdrvChild *child, int64_t offset, - const void *buf, int count); + const void *buf, int64_t bytes); /* * Efficiently zero a region of the disk image. Note that this is a regular * I/O request like read or write and should have a reasonable size. This @@ -405,7 +406,7 @@ int bdrv_pwrite_sync(BdrvChild *child, int64_t offset, * because it may allocate memory for the entire region. */ int coroutine_fn bdrv_co_pwrite_zeroes(BdrvChild *child, int64_t offset, - int bytes, BdrvRequestFlags flags); + int64_t bytes, BdrvRequestFlags flags); BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs, const char *backing_file); void bdrv_refresh_filename(BlockDriverState *bs); diff --git a/include/block/block_int.h b/include/block/block_int.h index f2ad8aa771c3..749d1fb9d049 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -1032,13 +1032,13 @@ extern BlockDriver bdrv_raw; extern BlockDriver bdrv_qcow2; int coroutine_fn bdrv_co_preadv(BdrvChild *child, - int64_t offset, unsigned int bytes, QEMUIOVector *qiov, + int64_t offset, int64_t bytes, QEMUIOVector *qiov, BdrvRequestFlags flags); int coroutine_fn bdrv_co_preadv_part(BdrvChild *child, int64_t offset, int64_t bytes, QEMUIOVector *qiov, size_t qiov_offset, BdrvRequestFlags flags); int coroutine_fn bdrv_co_pwritev(BdrvChild *child, - int64_t offset, unsigned int bytes, QEMUIOVector *qiov, + int64_t offset, int64_t bytes, QEMUIOVector *qiov, BdrvRequestFlags flags); int coroutine_fn bdrv_co_pwritev_part(BdrvChild *child, int64_t offset, int64_t bytes, diff --git a/block/io.c b/block/io.c index 7b6b0027bc4c..8817c8496663 100644 --- a/block/io.c +++ b/block/io.c @@ -1005,7 +1005,7 @@ static int bdrv_check_request32(int64_t offset, int64_t bytes, } int bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset, - int bytes, BdrvRequestFlags flags) + int64_t bytes, BdrvRequestFlags flags) { return bdrv_pwritev(child, offset, bytes, NULL, BDRV_REQ_ZERO_WRITE | flags); @@ -1053,7 +1053,7 @@ int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags) } /* See bdrv_pwrite() for the return codes */ -int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int bytes) +int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes) { int ret; QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes); @@ -1073,7 +1073,8 @@ int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int bytes) -EINVAL Invalid offset or number of bytes -EACCES Trying to write a read-only device */ -int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf, int bytes) +int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf, + int64_t bytes) { int ret; QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes); @@ -1094,7 +1095,7 @@ int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf, int bytes) * Returns 0 on success, -errno in error cases. */ int bdrv_pwrite_sync(BdrvChild *child, int64_t offset, - const void *buf, int count) + const void *buf, int64_t count) { int ret; @@ -1759,7 +1760,7 @@ static int bdrv_pad_request(BlockDriverState *bs, } int coroutine_fn bdrv_co_preadv(BdrvChild *child, - int64_t offset, unsigned int bytes, QEMUIOVector *qiov, + int64_t offset, int64_t bytes, QEMUIOVector *qiov, BdrvRequestFlags flags) { return bdrv_co_preadv_part(child, offset, bytes, qiov, 0, flags); @@ -2186,7 +2187,7 @@ out: * Handle a write request in coroutine context */ int coroutine_fn bdrv_co_pwritev(BdrvChild *child, - int64_t offset, unsigned int bytes, QEMUIOVector *qiov, + int64_t offset, int64_t bytes, QEMUIOVector *qiov, BdrvRequestFlags flags) { return bdrv_co_pwritev_part(child, offset, bytes, qiov, 0, flags); @@ -2279,7 +2280,7 @@ out: } int coroutine_fn bdrv_co_pwrite_zeroes(BdrvChild *child, int64_t offset, - int bytes, BdrvRequestFlags flags) + int64_t bytes, BdrvRequestFlags flags) { trace_bdrv_co_pwrite_zeroes(child->bs, offset, bytes, flags); diff --git a/block/blkverify.c b/block/blkverify.c index 4aed53ab5982..943e62be9cf1 100644 --- a/block/blkverify.c +++ b/block/blkverify.c @@ -31,7 +31,7 @@ typedef struct BlkverifyRequest { uint64_t bytes; int flags; - int (*request_fn)(BdrvChild *, int64_t, unsigned int, QEMUIOVector *, + int (*request_fn)(BdrvChild *, int64_t, int64_t, QEMUIOVector *, BdrvRequestFlags); int ret; /* test image result */ diff --git a/block/trace-events b/block/trace-events index b252457d8e1a..a8d3fe94e66d 100644 --- a/block/trace-events +++ b/block/trace-events @@ -13,7 +13,7 @@ blk_root_detach(void *child, void *blk, void *bs) "child %p blk %p bs %p" # io.c bdrv_co_preadv_part(void *bs, int64_t offset, int64_t bytes, unsigned int flags) "bs %p offset %" PRId64 " bytes %" PRId64 " flags 0x%x" bdrv_co_pwritev_part(void *bs, int64_t offset, int64_t bytes, unsigned int flags) "bs %p offset %" PRId64 " bytes %" PRId64 " flags 0x%x" -bdrv_co_pwrite_zeroes(void *bs, int64_t offset, int count, int flags) "bs %p offset %"PRId64" count %d flags 0x%x" +bdrv_co_pwrite_zeroes(void *bs, int64_t offset, int64_t bytes, int flags) "bs %p offset %" PRId64 " bytes %" PRId64 " flags 0x%x" bdrv_co_do_copy_on_readv(void *bs, int64_t offset, int64_t bytes, int64_t cluster_offset, int64_t cluster_bytes) "bs %p offset %" PRId64 " bytes %" PRId64 " cluster_offset %" PRId64 " cluster_bytes %" PRId64 bdrv_co_copy_range_from(void *src, uint64_t src_offset, void *dst, uint64_t dst_offset, uint64_t bytes, int read_flags, int write_flags) "src %p offset %"PRIu64" dst %p offset %"PRIu64" bytes %"PRIu64" rw flags 0x%x 0x%x" bdrv_co_copy_range_to(void *src, uint64_t src_offset, void *dst, uint64_t dst_offset, uint64_t bytes, int read_flags, int write_flags) "src %p offset %"PRIu64" dst %p offset %"PRIu64" bytes %"PRIu64" rw flags 0x%x 0x%x"