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From b5c5693d22cda0db33d01c6350d790b59a98c92c Mon Sep 17 00:00:00 2001
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From: John Snow <jsnow@redhat.com>
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Date: Wed, 18 Jul 2018 22:54:42 +0200
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Subject: [PATCH 57/89] block/dirty-bitmap: add bdrv_enable_dirty_bitmap_locked
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RH-Author: John Snow <jsnow@redhat.com>
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Message-id: <20180718225511.14878-7-jsnow@redhat.com>
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Patchwork-id: 81405
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O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 06/35] block/dirty-bitmap: add bdrv_enable_dirty_bitmap_locked
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Bugzilla: 1207657
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RH-Acked-by: Eric Blake <eblake@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
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Add _locked version of bdrv_enable_dirty_bitmap, to fix dirty bitmap
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migration in the following patch.
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Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
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Message-id: 20180625165745.25259-2-vsementsov@virtuozzo.com
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Signed-off-by: John Snow <jsnow@redhat.com>
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(cherry picked from commit 92bcea40d3aac62853e60426bd109b748d4d1cd2)
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Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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block/dirty-bitmap.c | 9 +++++++--
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include/block/dirty-bitmap.h | 1 +
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2 files changed, 8 insertions(+), 2 deletions(-)
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diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
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index 4159d39..4d6ae8b 100644
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--- a/block/dirty-bitmap.c
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+++ b/block/dirty-bitmap.c
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@@ -250,6 +250,12 @@ int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs,
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return 0;
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}
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+void bdrv_enable_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap)
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+{
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+ assert(!bdrv_dirty_bitmap_frozen(bitmap));
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+ bitmap->disabled = false;
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+}
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+
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/* Called with BQL taken. */
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void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap)
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{
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@@ -453,8 +459,7 @@ void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap)
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void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap)
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{
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bdrv_dirty_bitmap_lock(bitmap);
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- assert(!bdrv_dirty_bitmap_frozen(bitmap));
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- bitmap->disabled = false;
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+ bdrv_enable_dirty_bitmap_locked(bitmap);
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bdrv_dirty_bitmap_unlock(bitmap);
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}
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diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h
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index 1e14743..af9ba3c 100644
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--- a/include/block/dirty-bitmap.h
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+++ b/include/block/dirty-bitmap.h
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@@ -33,6 +33,7 @@ void bdrv_remove_persistent_dirty_bitmap(BlockDriverState *bs,
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Error **errp);
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void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
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void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
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+void bdrv_enable_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap);
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BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs);
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uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs);
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uint32_t bdrv_dirty_bitmap_granularity(const BdrvDirtyBitmap *bitmap);
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--
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1.8.3.1
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