From: Alexander Ivanov <alexander.ivanov@virtuozzo.com>
To: qemu-devel@nongnu.org
Cc: qemu-block@nongnu.org, den@virtuozzo.com, stefanha@redhat.com,
vsementsov@yandex-team.ru, kwolf@redhat.com, hreitz@redhat.com
Subject: [PATCH v4 09/21] parallels: Add a note about used bitmap in parallels_check_duplicate()
Date: Thu, 28 Dec 2023 11:12:20 +0100 [thread overview]
Message-ID: <20231228101232.372142-10-alexander.ivanov@virtuozzo.com> (raw)
In-Reply-To: <20231228101232.372142-1-alexander.ivanov@virtuozzo.com>
In parallels_check_duplicate() We use a bitmap for duplication detection.
This bitmap is not related to used_bmap field in BDRVParallelsState. Add
a comment about it to avoid confusion.
Signed-off-by: Alexander Ivanov <alexander.ivanov@virtuozzo.com>
---
block/parallels.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/block/parallels.c b/block/parallels.c
index 04c114f696..0ae06ec0b1 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -837,7 +837,10 @@ parallels_check_duplicate(BlockDriverState *bs, BdrvCheckResult *res,
bool fixed = false;
/*
- * Create a bitmap of used clusters.
+ * Create a bitmap of used clusters. Please note that this bitmap is not
+ * related to used_bmap field in BDRVParallelsState and is created only for
+ * local usage.
+ *
* If a bit is set, there is a BAT entry pointing to this cluster.
* Loop through the BAT entries, check bits relevant to an entry offset.
* If bit is set, this entry is duplicated. Otherwise set the bit.
--
2.40.1
next prev parent reply other threads:[~2023-12-28 10:15 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-28 10:12 [PATCH v4 00/21] parallels: Add full dirty bitmap support Alexander Ivanov
2023-12-28 10:12 ` [PATCH v4 01/21] parallels: Set s->used_bmap to NULL in parallels_free_used_bitmap() Alexander Ivanov
2023-12-28 10:12 ` [PATCH v4 02/21] parallels: Move inactivation code to a separate function Alexander Ivanov
2023-12-28 10:12 ` [PATCH v4 03/21] parallels: Make mark_used() a global function Alexander Ivanov
2023-12-28 10:12 ` [PATCH v4 04/21] parallels: Limit search in parallels_mark_used to the last marked claster Alexander Ivanov
2024-01-16 13:52 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 05/21] parallels: Add parallels_mark_unused() helper Alexander Ivanov
2024-01-16 13:54 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 06/21] parallels: Move host clusters allocation to a separate function Alexander Ivanov
2024-01-16 14:19 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 07/21] parallels: Set data_end value in parallels_check_leak() Alexander Ivanov
2024-01-16 14:21 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 08/21] parallels: Recreate used bitmap " Alexander Ivanov
2024-01-16 14:24 ` Denis V. Lunev
2023-12-28 10:12 ` Alexander Ivanov [this message]
2024-01-16 14:30 ` [PATCH v4 09/21] parallels: Add a note about used bitmap in parallels_check_duplicate() Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 10/21] parallels: Create used bitmap even if checks needed Alexander Ivanov
2024-01-16 14:37 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 11/21] parallels: Add dirty bitmaps saving Alexander Ivanov
2024-01-18 13:27 ` Denis V. Lunev
2024-02-07 12:42 ` Alexander Ivanov
2023-12-28 10:12 ` [PATCH v4 12/21] parallels: Let image extensions work in RW mode Alexander Ivanov
2024-01-16 14:45 ` Denis V. Lunev
2024-01-18 13:31 ` Denis V. Lunev
2024-02-28 10:25 ` Alexander Ivanov
2024-02-28 12:11 ` Denis V. Lunev
2024-01-18 13:35 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 13/21] parallels: Handle L1 entries equal to one Alexander Ivanov
2024-01-18 13:37 ` Denis V. Lunev
2024-02-29 11:57 ` Alexander Ivanov
2023-12-28 10:12 ` [PATCH v4 14/21] parallels: Make a loaded dirty bitmap persistent Alexander Ivanov
2024-01-18 13:59 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 15/21] parallels: Reverse a conditional in parallels_check_leak() to reduce indents Alexander Ivanov
2024-01-18 14:49 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 16/21] parallels: Truncate images on the last used cluster Alexander Ivanov
2024-01-18 14:52 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 17/21] parallels: Check unused clusters in parallels_check_leak() Alexander Ivanov
2024-01-18 14:55 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 18/21] parallels: Remove unnecessary data_end field Alexander Ivanov
2024-01-18 15:00 ` Denis V. Lunev
2023-12-28 10:12 ` [PATCH v4 19/21] tests: Add parallels images support to test 165 Alexander Ivanov
2023-12-28 10:12 ` [PATCH v4 20/21] tests: Turned on 256, 299, 304 and block-status-cache for parallels format Alexander Ivanov
2023-12-28 10:12 ` [PATCH v4 21/21] tests: Add parallels format support to image-fleecing Alexander Ivanov
2023-12-29 15:59 ` Vladimir Sementsov-Ogievskiy
2024-01-18 15:01 ` [PATCH v4 00/21] parallels: Add full dirty bitmap support Denis V. Lunev
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