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[Qemu-devel] [PATCH v2 1/7] block/dirty-bitmap: add lock to bdrv_enable/
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-devel] [PATCH v2 1/7] block/dirty-bitmap: add lock to bdrv_enable/disable_dirty_bitmap |
Date: |
Mon, 16 Apr 2018 14:44:08 +0300 |
Functions write to BdrvDirtyBitmap field, so the should take the lock.
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
block/dirty-bitmap.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index 967159479d..6c00288fd7 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -445,15 +445,19 @@ void bdrv_remove_persistent_dirty_bitmap(BlockDriverState
*bs,
/* Called with BQL taken. */
void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap)
{
+ bdrv_dirty_bitmap_lock(bitmap);
assert(!bdrv_dirty_bitmap_frozen(bitmap));
bitmap->disabled = true;
+ bdrv_dirty_bitmap_unlock(bitmap);
}
/* Called with BQL taken. */
void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap)
{
+ bdrv_dirty_bitmap_lock(bitmap);
assert(!bdrv_dirty_bitmap_frozen(bitmap));
bitmap->disabled = false;
+ bdrv_dirty_bitmap_unlock(bitmap);
}
BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs)
--
2.11.1