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From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, armbru@redhat.com, jsnow@redhat.com,
	vsementsov@virtuozzo.com, eblake@redhat.com, hreitz@redhat.com,
	kwolf@redhat.com, den@openvz.org, ktkhai@virtuozzo.com,
	igor@virtuozzo.com
Subject: [PATCH 04/14] block: add bdrv_try_set_aio_context_tran transaction action
Date: Mon,  7 Feb 2022 17:37:18 +0100	[thread overview]
Message-ID: <20220207163728.30362-5-vsementsov@virtuozzo.com> (raw)
In-Reply-To: <20220207163728.30362-1-vsementsov@virtuozzo.com>

To be used in further commit.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 block.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/block.c b/block.c
index 7b65c7c5c0..82fbf81a3c 100644
--- a/block.c
+++ b/block.c
@@ -2791,6 +2791,54 @@ static void bdrv_child_free(BdrvChild *child)
     g_free(child);
 }
 
+typedef struct BdrvTrySetAioContextState {
+    BlockDriverState *bs;
+    AioContext *old_ctx;
+} BdrvTrySetAioContextState;
+
+static void bdrv_try_set_aio_context_abort(void *opaque)
+{
+    BdrvTrySetAioContextState *s = opaque;
+
+    if (bdrv_get_aio_context(s->bs) != s->old_ctx) {
+        bdrv_try_set_aio_context(s->bs, s->old_ctx, &error_abort);
+    }
+}
+
+static TransactionActionDrv bdrv_try_set_aio_context_drv = {
+    .abort = bdrv_try_set_aio_context_abort,
+    .clean = g_free,
+};
+
+__attribute__((unused))
+static int bdrv_try_set_aio_context_tran(BlockDriverState *bs,
+                                         AioContext *new_ctx,
+                                         Transaction *tran,
+                                         Error **errp)
+{
+    AioContext *old_ctx = bdrv_get_aio_context(bs);
+    BdrvTrySetAioContextState *s;
+    int ret;
+
+    if (old_ctx == new_ctx) {
+        return 0;
+    }
+
+    ret = bdrv_try_set_aio_context(bs, new_ctx, errp);
+    if (ret < 0) {
+        return ret;
+    }
+
+    s = g_new(BdrvTrySetAioContextState, 1);
+    *s = (BdrvTrySetAioContextState) {
+        .bs = bs,
+        .old_ctx = old_ctx,
+    };
+    tran_add(tran, &bdrv_try_set_aio_context_drv, s);
+
+    return 0;
+}
+
 typedef struct BdrvAttachChildCommonState {
     BdrvChild *child;
     AioContext *old_parent_ctx;
-- 
2.31.1



  parent reply	other threads:[~2022-02-07 17:31 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-07 16:37 [PATCH 00/14] block: blockdev-del force=false Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 01/14] block: refactor bdrv_remove_file_or_backing_child to bdrv_remove_child Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 02/14] block: drop bdrv_detach_child() Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 03/14] block: bdrv_refresh_perms(): allow external tran Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` Vladimir Sementsov-Ogievskiy [this message]
2022-02-07 16:37 ` [PATCH 05/14] block: merge bdrv_delete and bdrv_close Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 06/14] block: bdrv_delete(): drop unnecessary zeroing Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 07/14] block: implemet bdrv_try_unref() Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 08/14] qapi/block-core: add 'force' argument to blockdev-del Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 09/14] qcow2: qcow2_inactivate(): use qcow2_flush_caches() Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 10/14] qcow2: qcow2_inactivate(): don't call qcow2_mark_clean() when RO Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 11/14] qcow2: refactor qcow2_inactivate Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 12/14] qcow2: implement .bdrv_close_safe Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 13/14] block/file-posix: " Vladimir Sementsov-Ogievskiy
2022-02-07 16:37 ` [PATCH 14/14] iotests: add test for blockdev-del(force=false) Vladimir Sementsov-Ogievskiy

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