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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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1592389688165173.79605101407162; Wed, 17 Jun 2020 03:28:08 -0700 (PDT) Received: from localhost ([::1]:58458 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jlVIc-0006BO-SD for importer@patchew.org; Wed, 17 Jun 2020 06:28:06 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54434) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jlVGr-0004Hz-Ah; Wed, 17 Jun 2020 06:26:17 -0400 Received: from [114.255.249.163] (port=49820 helo=localhost) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jlVGo-0007Oh-G5; Wed, 17 Jun 2020 06:26:17 -0400 Received: by localhost (Postfix, from userid 0) id 1939F1415E5; Wed, 17 Jun 2020 18:20:24 +0800 (CST) From: Lin Ma To: qemu-block@nongnu.org Subject: [PATCH v2 2/3] block: Add GET LBA STATUS support Date: Wed, 17 Jun 2020 18:20:18 +0800 Message-Id: <20200617102019.29652-3-lma@suse.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200617102019.29652-1-lma@suse.com> References: <20200617102019.29652-1-lma@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 114.255.249.163 (failed) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" Signed-off-by: Lin Ma --- block/block-backend.c | 38 ++++++++++++++++++++++++++++++++++ include/sysemu/block-backend.h | 2 ++ 2 files changed, 40 insertions(+) diff --git a/block/block-backend.c b/block/block-backend.c index 6936b25c83..6d08dd5e0d 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -1650,6 +1650,44 @@ int blk_pdiscard(BlockBackend *blk, int64_t offset, = int bytes) return blk_prw(blk, offset, NULL, bytes, blk_pdiscard_entry, 0); } =20 +static int coroutine_fn +blk_do_get_lba_status(BlockBackend *blk, int64_t offset, int bytes, + uint32_t *num_blocks, uint32_t *is_deallocated) +{ + int ret; + + blk_wait_while_drained(blk); + + ret =3D blk_check_byte_request(blk, offset, bytes); + if (ret < 0) { + return ret; + } + + return bdrv_co_get_lba_status(blk->root, offset, bytes, num_blocks, + is_deallocated); +} + +static void blk_aio_get_lba_status_entry(void *opaque) +{ + BlkAioEmAIOCB *acb =3D opaque; + BlkRwCo *rwco =3D &acb->rwco; + + void *data =3D acb->common.opaque; + uint32_t *num_blocks =3D (uint32_t *)data; + uint32_t *is_deallocated =3D (uint32_t *)(data + sizeof(uint32_t)); + + rwco->ret =3D blk_do_get_lba_status(rwco->blk, rwco->offset, acb->byte= s, + num_blocks, is_deallocated); + blk_aio_complete(acb); +} + +BlockAIOCB *blk_aio_get_lba_status(BlockBackend *blk, int64_t offset, int = bytes, + BlockCompletionFunc *cb, void *opaque) +{ + return blk_aio_prwv(blk, offset, bytes, NULL, blk_aio_get_lba_status_e= ntry, + 0, cb, opaque); +} + /* To be called between exactly one pair of blk_inc/dec_in_flight() */ static int coroutine_fn blk_do_flush(BlockBackend *blk) { diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 8203d7f6f9..cd527ec0c9 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -171,6 +171,8 @@ BlockAIOCB *blk_aio_flush(BlockBackend *blk, BlockCompletionFunc *cb, void *opaque); BlockAIOCB *blk_aio_pdiscard(BlockBackend *blk, int64_t offset, int bytes, BlockCompletionFunc *cb, void *opaque); +BlockAIOCB *blk_aio_get_lba_status(BlockBackend *blk, int64_t offset, int = bytes, + BlockCompletionFunc *cb, void *opaque); void blk_aio_cancel(BlockAIOCB *acb); void blk_aio_cancel_async(BlockAIOCB *acb); int blk_ioctl(BlockBackend *blk, unsigned long int req, void *buf); --=20 2.26.0