From nobody Fri Nov 14 00:48:48 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=virtuozzo.com ARC-Seal: i=1; a=rsa-sha256; t=1583480489; cv=none; d=zohomail.com; s=zohoarc; b=O69/lPu+ochF8BJGB/J/7PYOkPXPV03HN+/Ga576OufApfxGXkTa7T9A8o6d3X5o3KOYV6KHekBoTsck9Uu0ooUnCC98DRZOP2yfwrlavOcAqQDymQEzY2ce1fyEkNXIeM3ldzai8fI/nOxJ56k8/t6B3wW3buMAJ18f/XMjtms= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1583480489; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=V3LaAkfreknd+0DmH4M/V2PywdTvDx7cR+JCxosO2NM=; b=bZIjGb0vzO7RhdMjkAGrlv0cMZeIBA3XtG2TER6lKz+3P3voe+6vWT/a2MlnWf/1gxcw1GwsaHOHtKyh7hX+1hJQiXBTAfx+9rmrGIEtRCUwumUfWF7nbZx+wdVjiQN4CUw6ila26NDleB1dVMRlc7ZMf5pHRz7xvOZg9ZTH5xg= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1583480489331175.08667662220353; Thu, 5 Mar 2020 23:41:29 -0800 (PST) Received: from localhost ([::1]:60514 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jA7bs-00026G-65 for importer@patchew.org; Fri, 06 Mar 2020 02:41:28 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:46319) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jA7ZI-00055h-9I for qemu-devel@nongnu.org; Fri, 06 Mar 2020 02:38:50 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jA7ZG-0008LC-96 for qemu-devel@nongnu.org; Fri, 06 Mar 2020 02:38:48 -0500 Received: from relay.sw.ru ([185.231.240.75]:37966) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jA7ZC-0007wt-He; Fri, 06 Mar 2020 02:38:42 -0500 Received: from vovaso.qa.sw.ru ([10.94.3.0] helo=kvm.qa.sw.ru) by relay.sw.ru with esmtp (Exim 4.92.3) (envelope-from ) id 1jA7Z8-0002Qu-M7; Fri, 06 Mar 2020 10:38:38 +0300 From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Subject: [PATCH v3 7/9] block/block-copy: rename start to offset in interfaces Date: Fri, 6 Mar 2020 10:38:29 +0300 Message-Id: <20200306073831.7737-8-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200306073831.7737-1-vsementsov@virtuozzo.com> References: <20200306073831.7737-1-vsementsov@virtuozzo.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 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: kwolf@redhat.com, vsementsov@virtuozzo.com, qemu-devel@nongnu.org, mreitz@redhat.com, andrey.shinkevich@virtuozzo.com, jsnow@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" offset/bytes pair is more usual naming in block layer, let's use it. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Andrey Shinkevich Reviewed-by: Max Reitz --- include/block/block-copy.h | 4 +- block/block-copy.c | 84 +++++++++++++++++++------------------- 2 files changed, 44 insertions(+), 44 deletions(-) diff --git a/include/block/block-copy.h b/include/block/block-copy.h index 039cf7c908..c46b382cc6 100644 --- a/include/block/block-copy.h +++ b/include/block/block-copy.h @@ -19,7 +19,7 @@ #include "qemu/co-shared-resource.h" =20 typedef struct BlockCopyInFlightReq { - int64_t start; + int64_t offset; int64_t bytes; QLIST_ENTRY(BlockCopyInFlightReq) list; CoQueue wait_queue; /* coroutines blocked on this request */ @@ -86,7 +86,7 @@ void block_copy_state_free(BlockCopyState *s); int64_t block_copy_reset_unallocated(BlockCopyState *s, int64_t offset, int64_t *count); =20 -int coroutine_fn block_copy(BlockCopyState *s, int64_t start, int64_t byte= s, +int coroutine_fn block_copy(BlockCopyState *s, int64_t offset, int64_t byt= es, bool *error_is_read); =20 #endif /* BLOCK_COPY_H */ diff --git a/block/block-copy.c b/block/block-copy.c index 4c947e548b..2b29131653 100644 --- a/block/block-copy.c +++ b/block/block-copy.c @@ -25,13 +25,13 @@ #define BLOCK_COPY_MAX_MEM (128 * MiB) =20 static BlockCopyInFlightReq *find_conflicting_inflight_req(BlockCopyState = *s, - int64_t start, - int64_t bytes) + int64_t offset, + int64_t bytes) { BlockCopyInFlightReq *req; =20 QLIST_FOREACH(req, &s->inflight_reqs, list) { - if (start + bytes > req->start && start < req->start + req->bytes)= { + if (offset + bytes > req->offset && offset < req->offset + req->by= tes) { return req; } } @@ -40,21 +40,21 @@ static BlockCopyInFlightReq *find_conflicting_inflight_= req(BlockCopyState *s, } =20 static void coroutine_fn block_copy_wait_inflight_reqs(BlockCopyState *s, - int64_t start, + int64_t offset, int64_t bytes) { BlockCopyInFlightReq *req; =20 - while ((req =3D find_conflicting_inflight_req(s, start, bytes))) { + while ((req =3D find_conflicting_inflight_req(s, offset, bytes))) { qemu_co_queue_wait(&req->wait_queue, NULL); } } =20 static void block_copy_inflight_req_begin(BlockCopyState *s, BlockCopyInFlightReq *req, - int64_t start, int64_t bytes) + int64_t offset, int64_t bytes) { - req->start =3D start; + req->offset =3D offset; req->bytes =3D bytes; qemu_co_queue_init(&req->wait_queue); QLIST_INSERT_HEAD(&s->inflight_reqs, req, list); @@ -161,26 +161,26 @@ void block_copy_set_progress_meter(BlockCopyState *s,= ProgressMeter *pm) * Returns 0 on success. */ static int coroutine_fn block_copy_do_copy(BlockCopyState *s, - int64_t start, int64_t bytes, + int64_t offset, int64_t bytes, bool zeroes, bool *error_is_rea= d) { int ret; - int64_t nbytes =3D MIN(start + bytes, s->len) - start; + int64_t nbytes =3D MIN(offset + bytes, s->len) - offset; void *bounce_buffer =3D NULL; =20 - assert(start >=3D 0 && bytes > 0 && INT64_MAX - start >=3D bytes); - assert(QEMU_IS_ALIGNED(start, s->cluster_size)); + assert(offset >=3D 0 && bytes > 0 && INT64_MAX - offset >=3D bytes); + assert(QEMU_IS_ALIGNED(offset, s->cluster_size)); assert(QEMU_IS_ALIGNED(bytes, s->cluster_size)); - assert(start < s->len); - assert(start + bytes <=3D s->len || - start + bytes =3D=3D QEMU_ALIGN_UP(s->len, s->cluster_size)); + assert(offset < s->len); + assert(offset + bytes <=3D s->len || + offset + bytes =3D=3D QEMU_ALIGN_UP(s->len, s->cluster_size)); assert(nbytes < INT_MAX); =20 if (zeroes) { - ret =3D bdrv_co_pwrite_zeroes(s->target, start, nbytes, s->write_f= lags & + ret =3D bdrv_co_pwrite_zeroes(s->target, offset, nbytes, s->write_= flags & ~BDRV_REQ_WRITE_COMPRESSED); if (ret < 0) { - trace_block_copy_write_zeroes_fail(s, start, ret); + trace_block_copy_write_zeroes_fail(s, offset, ret); if (error_is_read) { *error_is_read =3D false; } @@ -189,10 +189,10 @@ static int coroutine_fn block_copy_do_copy(BlockCopyS= tate *s, } =20 if (s->use_copy_range) { - ret =3D bdrv_co_copy_range(s->source, start, s->target, start, nby= tes, + ret =3D bdrv_co_copy_range(s->source, offset, s->target, offset, n= bytes, 0, s->write_flags); if (ret < 0) { - trace_block_copy_copy_range_fail(s, start, ret); + trace_block_copy_copy_range_fail(s, offset, ret); s->use_copy_range =3D false; s->copy_size =3D MAX(s->cluster_size, BLOCK_COPY_MAX_BUFFER); /* Fallback to read+write with allocated buffer */ @@ -228,19 +228,19 @@ static int coroutine_fn block_copy_do_copy(BlockCopyS= tate *s, =20 bounce_buffer =3D qemu_blockalign(s->source->bs, nbytes); =20 - ret =3D bdrv_co_pread(s->source, start, nbytes, bounce_buffer, 0); + ret =3D bdrv_co_pread(s->source, offset, nbytes, bounce_buffer, 0); if (ret < 0) { - trace_block_copy_read_fail(s, start, ret); + trace_block_copy_read_fail(s, offset, ret); if (error_is_read) { *error_is_read =3D true; } goto out; } =20 - ret =3D bdrv_co_pwrite(s->target, start, nbytes, bounce_buffer, + ret =3D bdrv_co_pwrite(s->target, offset, nbytes, bounce_buffer, s->write_flags); if (ret < 0) { - trace_block_copy_write_fail(s, start, ret); + trace_block_copy_write_fail(s, offset, ret); if (error_is_read) { *error_is_read =3D false; } @@ -358,7 +358,7 @@ int64_t block_copy_reset_unallocated(BlockCopyState *s, } =20 int coroutine_fn block_copy(BlockCopyState *s, - int64_t start, int64_t bytes, + int64_t offset, int64_t bytes, bool *error_is_read) { int ret =3D 0; @@ -371,64 +371,64 @@ int coroutine_fn block_copy(BlockCopyState *s, assert(bdrv_get_aio_context(s->source->bs) =3D=3D bdrv_get_aio_context(s->target->bs)); =20 - assert(QEMU_IS_ALIGNED(start, s->cluster_size)); + assert(QEMU_IS_ALIGNED(offset, s->cluster_size)); assert(QEMU_IS_ALIGNED(bytes, s->cluster_size)); =20 - block_copy_wait_inflight_reqs(s, start, bytes); - block_copy_inflight_req_begin(s, &req, start, bytes); + block_copy_wait_inflight_reqs(s, offset, bytes); + block_copy_inflight_req_begin(s, &req, offset, bytes); =20 while (bytes) { int64_t next_zero, cur_bytes, status_bytes; =20 - if (!bdrv_dirty_bitmap_get(s->copy_bitmap, start)) { - trace_block_copy_skip(s, start); - start +=3D s->cluster_size; + if (!bdrv_dirty_bitmap_get(s->copy_bitmap, offset)) { + trace_block_copy_skip(s, offset); + offset +=3D s->cluster_size; bytes -=3D s->cluster_size; continue; /* already copied */ } =20 cur_bytes =3D MIN(bytes, s->copy_size); =20 - next_zero =3D bdrv_dirty_bitmap_next_zero(s->copy_bitmap, start, + next_zero =3D bdrv_dirty_bitmap_next_zero(s->copy_bitmap, offset, cur_bytes); if (next_zero >=3D 0) { - assert(next_zero > start); /* start is dirty */ - assert(next_zero < start + cur_bytes); /* no need to do MIN() = */ - cur_bytes =3D next_zero - start; + assert(next_zero > offset); /* offset is dirty */ + assert(next_zero < offset + cur_bytes); /* no need to do MIN()= */ + cur_bytes =3D next_zero - offset; } =20 - ret =3D block_copy_block_status(s, start, cur_bytes, &status_bytes= ); + ret =3D block_copy_block_status(s, offset, cur_bytes, &status_byte= s); if (s->skip_unallocated && !(ret & BDRV_BLOCK_ALLOCATED)) { - bdrv_reset_dirty_bitmap(s->copy_bitmap, start, status_bytes); + bdrv_reset_dirty_bitmap(s->copy_bitmap, offset, status_bytes); progress_set_remaining(s->progress, bdrv_get_dirty_count(s->copy_bitmap) + s->in_flight_bytes); - trace_block_copy_skip_range(s, start, status_bytes); - start +=3D status_bytes; + trace_block_copy_skip_range(s, offset, status_bytes); + offset +=3D status_bytes; bytes -=3D status_bytes; continue; } =20 cur_bytes =3D MIN(cur_bytes, status_bytes); =20 - trace_block_copy_process(s, start); + trace_block_copy_process(s, offset); =20 - bdrv_reset_dirty_bitmap(s->copy_bitmap, start, cur_bytes); + bdrv_reset_dirty_bitmap(s->copy_bitmap, offset, cur_bytes); s->in_flight_bytes +=3D cur_bytes; =20 co_get_from_shres(s->mem, cur_bytes); - ret =3D block_copy_do_copy(s, start, cur_bytes, ret & BDRV_BLOCK_Z= ERO, + ret =3D block_copy_do_copy(s, offset, cur_bytes, ret & BDRV_BLOCK_= ZERO, error_is_read); co_put_to_shres(s->mem, cur_bytes); s->in_flight_bytes -=3D cur_bytes; if (ret < 0) { - bdrv_set_dirty_bitmap(s->copy_bitmap, start, cur_bytes); + bdrv_set_dirty_bitmap(s->copy_bitmap, offset, cur_bytes); break; } =20 progress_work_done(s->progress, cur_bytes); s->progress_bytes_callback(cur_bytes, s->progress_opaque); - start +=3D cur_bytes; + offset +=3D cur_bytes; bytes -=3D cur_bytes; } =20 --=20 2.21.0