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GET /api/1.2/patches/2225817/?format=api
{ "id": 2225817, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2225817/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260421161132.99878-4-kwolf@redhat.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.2/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260421161132.99878-4-kwolf@redhat.com>", "list_archive_url": null, "date": "2026-04-21T16:11:28", "name": "[3/7] block: Add flags parameter to blk_*_pdiscard()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "1c2f2c981ebb321e894a46b592973b2575aa3deb", "submitter": { "id": 2714, "url": "http://patchwork.ozlabs.org/api/1.2/people/2714/?format=api", "name": "Kevin Wolf", "email": "kwolf@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260421161132.99878-4-kwolf@redhat.com/mbox/", "series": [ { "id": 500847, "url": "http://patchwork.ozlabs.org/api/1.2/series/500847/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=500847", "date": "2026-04-21T16:11:27", "name": "ide: Fix deadlock between TRIM and drain", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500847/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225817/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225817/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com 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"xx__dSBGOTqP3JBQmVcE7Q_1776787928", "From": "Kevin Wolf <kwolf@redhat.com>", "To": "qemu-block@nongnu.org", "Cc": "kwolf@redhat.com, hreitz@redhat.com, jsnow@redhat.com,\n qemu-devel@nongnu.org, qemu-stable@nongnu.org", "Subject": "[PATCH 3/7] block: Add flags parameter to blk_*_pdiscard()", "Date": "Tue, 21 Apr 2026 18:11:28 +0200", "Message-ID": "<20260421161132.99878-4-kwolf@redhat.com>", "In-Reply-To": "<20260421161132.99878-1-kwolf@redhat.com>", "References": "<20260421161132.99878-1-kwolf@redhat.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Scanned-By": "MIMEDefang 3.4.1 on 10.30.177.111", "Received-SPF": "pass client-ip=170.10.129.124; envelope-from=kwolf@redhat.com;\n 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,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n SPF_HELO_PASS=-0.001,\n SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "All existing callers pass 0, but we need a way to pass BDRV_REQ_NO_QUEUE\nfor discard requests.\n\nSigned-off-by: Kevin Wolf <kwolf@redhat.com>\n---\n include/system/block-backend-io.h | 4 ++--\n block/block-backend.c | 11 ++++++-----\n block/export/virtio-blk-handler.c | 2 +-\n block/mirror.c | 4 ++--\n nbd/server.c | 2 +-\n qemu-io-cmds.c | 2 +-\n tests/unit/test-block-iothread.c | 4 ++--\n 7 files changed, 15 insertions(+), 14 deletions(-)", "diff": "diff --git a/include/system/block-backend-io.h b/include/system/block-backend-io.h\nindex 0248c1c36e2..fd84723d9d0 100644\n--- a/include/system/block-backend-io.h\n+++ b/include/system/block-backend-io.h\n@@ -218,9 +218,9 @@ int co_wrapper_mixed blk_zone_append(BlockBackend *blk, int64_t *offset,\n BdrvRequestFlags flags);\n \n int co_wrapper_mixed blk_pdiscard(BlockBackend *blk, int64_t offset,\n- int64_t bytes);\n+ int64_t bytes, BdrvRequestFlags flags);\n int coroutine_fn blk_co_pdiscard(BlockBackend *blk, int64_t offset,\n- int64_t bytes);\n+ int64_t bytes, BdrvRequestFlags flags);\n \n int co_wrapper_mixed blk_flush(BlockBackend *blk);\n int coroutine_fn blk_co_flush(BlockBackend *blk);\ndiff --git a/block/block-backend.c b/block/block-backend.c\nindex ee00440e28d..37ba7e9fc40 100644\n--- a/block/block-backend.c\n+++ b/block/block-backend.c\n@@ -1803,12 +1803,13 @@ BlockAIOCB *blk_aio_ioctl(BlockBackend *blk, unsigned long int req, void *buf,\n \n /* To be called between exactly one pair of blk_inc/dec_in_flight() */\n static int coroutine_fn\n-blk_co_do_pdiscard(BlockBackend *blk, int64_t offset, int64_t bytes)\n+blk_co_do_pdiscard(BlockBackend *blk, int64_t offset, int64_t bytes,\n+ BdrvRequestFlags flags)\n {\n int ret;\n IO_CODE();\n \n- blk_wait_while_drained(blk, 0);\n+ blk_wait_while_drained(blk, flags);\n GRAPH_RDLOCK_GUARD();\n \n ret = blk_check_byte_request(blk, offset, bytes);\n@@ -1824,7 +1825,7 @@ static void coroutine_fn blk_aio_pdiscard_entry(void *opaque)\n BlkAioEmAIOCB *acb = opaque;\n BlkRwCo *rwco = &acb->rwco;\n \n- rwco->ret = blk_co_do_pdiscard(rwco->blk, rwco->offset, acb->bytes);\n+ rwco->ret = blk_co_do_pdiscard(rwco->blk, rwco->offset, acb->bytes, 0);\n blk_aio_complete(acb);\n }\n \n@@ -1838,13 +1839,13 @@ BlockAIOCB *blk_aio_pdiscard(BlockBackend *blk,\n }\n \n int coroutine_fn blk_co_pdiscard(BlockBackend *blk, int64_t offset,\n- int64_t bytes)\n+ int64_t bytes, BdrvRequestFlags flags)\n {\n int ret;\n IO_OR_GS_CODE();\n \n blk_inc_in_flight(blk);\n- ret = blk_co_do_pdiscard(blk, offset, bytes);\n+ ret = blk_co_do_pdiscard(blk, offset, bytes, flags);\n blk_dec_in_flight(blk);\n \n return ret;\ndiff --git a/block/export/virtio-blk-handler.c b/block/export/virtio-blk-handler.c\nindex 3dd6c43af1a..eaa6fc19067 100644\n--- a/block/export/virtio-blk-handler.c\n+++ b/block/export/virtio-blk-handler.c\n@@ -122,7 +122,7 @@ virtio_blk_discard_write_zeroes(VirtioBlkHandler *handler, struct iovec *iov,\n }\n \n if (blk_co_pdiscard(blk, sector << VIRTIO_BLK_SECTOR_BITS,\n- bytes) == 0) {\n+ bytes, 0) == 0) {\n return VIRTIO_BLK_S_OK;\n }\n }\ndiff --git a/block/mirror.c b/block/mirror.c\nindex 2fcded9e93d..089856f4a84 100644\n--- a/block/mirror.c\n+++ b/block/mirror.c\n@@ -454,7 +454,7 @@ static void coroutine_fn mirror_co_discard(void *opaque)\n *op->bytes_handled = op->bytes;\n op->is_in_flight = true;\n \n- ret = blk_co_pdiscard(op->s->target, op->offset, op->bytes);\n+ ret = blk_co_pdiscard(op->s->target, op->offset, op->bytes, 0);\n mirror_write_complete(op, ret);\n }\n \n@@ -1532,7 +1532,7 @@ do_sync_target_write(MirrorBlockJob *job, MirrorMethod method,\n zero_bitmap_end - zero_bitmap_offset);\n }\n assert(!qiov);\n- ret = blk_co_pdiscard(job->target, offset, bytes);\n+ ret = blk_co_pdiscard(job->target, offset, bytes, 0);\n break;\n \n default:\ndiff --git a/nbd/server.c b/nbd/server.c\nindex 620097c58ca..78ec9844097 100644\n--- a/nbd/server.c\n+++ b/nbd/server.c\n@@ -2990,7 +2990,7 @@ static coroutine_fn int nbd_handle_request(NBDClient *client,\n \"flush failed\", errp);\n \n case NBD_CMD_TRIM:\n- ret = blk_co_pdiscard(exp->common.blk, request->from, request->len);\n+ ret = blk_co_pdiscard(exp->common.blk, request->from, request->len, 0);\n if (ret >= 0 && request->flags & NBD_CMD_FLAG_FUA) {\n ret = blk_co_flush(exp->common.blk);\n }\ndiff --git a/qemu-io-cmds.c b/qemu-io-cmds.c\nindex 13e03301624..f6d077908f2 100644\n--- a/qemu-io-cmds.c\n+++ b/qemu-io-cmds.c\n@@ -2201,7 +2201,7 @@ static int discard_f(BlockBackend *blk, int argc, char **argv)\n }\n \n clock_gettime(CLOCK_MONOTONIC, &t1);\n- ret = blk_pdiscard(blk, offset, bytes);\n+ ret = blk_pdiscard(blk, offset, bytes, 0);\n clock_gettime(CLOCK_MONOTONIC, &t2);\n \n if (ret < 0) {\ndiff --git a/tests/unit/test-block-iothread.c b/tests/unit/test-block-iothread.c\nindex e26b3be5939..5273ff235a2 100644\n--- a/tests/unit/test-block-iothread.c\n+++ b/tests/unit/test-block-iothread.c\n@@ -270,11 +270,11 @@ static void test_sync_op_blk_pdiscard(BlockBackend *blk)\n int ret;\n \n /* Early success: UNMAP not supported */\n- ret = blk_pdiscard(blk, 0, 512);\n+ ret = blk_pdiscard(blk, 0, 512, 0);\n g_assert_cmpint(ret, ==, 0);\n \n /* Early error: Negative offset */\n- ret = blk_pdiscard(blk, -2, 512);\n+ ret = blk_pdiscard(blk, -2, 512, 0);\n g_assert_cmpint(ret, ==, -EIO);\n }\n \n", "prefixes": [ "3/7" ] }