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bh=sg1N5S4PNg55NdUlNHYy3XqpdMcoRaxJqd13BuPeyKw=; b=Dhk/1tFQH2qVHEoGeU7crvaoSj39drXUBZcoo37UY1pXhlTCgr0EEpHG6wo99+AOaPe9lc rUG1SWIp57967f2dMBA1MmYsbEpBWpOJLU6/oLFrQAcTsdv+rTLFHaMxIfU7pX9lyCdZgw eBwgGCkSOMu+SBLzurz6R3ResrCxF2A= X-MC-Unique: eVT6l9PQOC64PhhFd8piQQ-1 From: Kevin Wolf To: qemu-block@nongnu.org Cc: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org Subject: [PULL 22/51] nbd/server.c: add coroutine_fn annotations Date: Wed, 14 Dec 2022 14:44:24 +0100 Message-Id: <20221214134453.31665-23-kwolf@redhat.com> In-Reply-To: <20221214134453.31665-1-kwolf@redhat.com> References: <20221214134453.31665-1-kwolf@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 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; Received-SPF: pass client-ip=170.10.133.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1671025632146100001 Content-Type: text/plain; charset="utf-8" From: Emanuele Giuseppe Esposito These functions end up calling bdrv_*() implemented as generated_co_wrapper functions. In addition, they also happen to be always called in coroutine context, meaning all callers are coroutine_fn. This means that the g_c_w function will enter the qemu_in_coroutine() case and eventually suspend (or in other words call qemu_coroutine_yield()). Therefore we can mark such functions coroutine_fn too. Signed-off-by: Emanuele Giuseppe Esposito Reviewed-by: Kevin Wolf Reviewed-by: Paolo Bonzini Reviewed-by: Vladimir Sementsov-Ogievskiy Message-Id: <20221128142337.657646-4-eesposit@redhat.com> Signed-off-by: Kevin Wolf --- nbd/server.c | 29 ++++++++++++++++------------- 1 file changed, 16 insertions(+), 13 deletions(-) diff --git a/nbd/server.c b/nbd/server.c index ada16089f3..4af5c793a7 100644 --- a/nbd/server.c +++ b/nbd/server.c @@ -2141,14 +2141,15 @@ static int nbd_extent_array_add(NBDExtentArray *ea, return 0; } =20 -static int blockstatus_to_extents(BlockDriverState *bs, uint64_t offset, - uint64_t bytes, NBDExtentArray *ea) +static int coroutine_fn blockstatus_to_extents(BlockDriverState *bs, + uint64_t offset, uint64_t b= ytes, + NBDExtentArray *ea) { while (bytes) { uint32_t flags; int64_t num; - int ret =3D bdrv_block_status_above(bs, NULL, offset, bytes, &num, - NULL, NULL); + int ret =3D bdrv_co_block_status_above(bs, NULL, offset, bytes, &n= um, + NULL, NULL); =20 if (ret < 0) { return ret; @@ -2168,13 +2169,14 @@ static int blockstatus_to_extents(BlockDriverState = *bs, uint64_t offset, return 0; } =20 -static int blockalloc_to_extents(BlockDriverState *bs, uint64_t offset, - uint64_t bytes, NBDExtentArray *ea) +static int coroutine_fn blockalloc_to_extents(BlockDriverState *bs, + uint64_t offset, uint64_t by= tes, + NBDExtentArray *ea) { while (bytes) { int64_t num; - int ret =3D bdrv_is_allocated_above(bs, NULL, false, offset, bytes, - &num); + int ret =3D bdrv_co_is_allocated_above(bs, NULL, false, offset, by= tes, + &num); =20 if (ret < 0) { return ret; @@ -2220,11 +2222,12 @@ static int nbd_co_send_extents(NBDClient *client, u= int64_t handle, } =20 /* Get block status from the exported device and send it to the client */ -static int nbd_co_send_block_status(NBDClient *client, uint64_t handle, - BlockDriverState *bs, uint64_t offset, - uint32_t length, bool dont_fragment, - bool last, uint32_t context_id, - Error **errp) +static int +coroutine_fn nbd_co_send_block_status(NBDClient *client, uint64_t handle, + BlockDriverState *bs, uint64_t offse= t, + uint32_t length, bool dont_fragment, + bool last, uint32_t context_id, + Error **errp) { int ret; unsigned int nb_extents =3D dont_fragment ? 1 : NBD_MAX_BLOCK_STATUS_E= XTENTS; --=20 2.38.1