diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/dirty-bitmap.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index ce00ff3..9671594 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -40,6 +40,8 @@ struct BdrvDirtyBitmap { QemuMutex *mutex; HBitmap *bitmap; /* Dirty bitmap implementation */ HBitmap *meta; /* Meta dirty bitmap */ + bool qmp_locked; /* Bitmap is locked, it can't be modified + through QMP */ BdrvDirtyBitmap *successor; /* Anonymous child; implies frozen status */ char *name; /* Optional non-empty unique ID */ int64_t size; /* Size of the bitmap, in bytes */ @@ -183,6 +185,18 @@ bool bdrv_dirty_bitmap_frozen(BdrvDirtyBitmap *bitmap) return bitmap->successor; } +void bdrv_dirty_bitmap_set_qmp_locked(BdrvDirtyBitmap *bitmap, bool qmp_locked) +{ + qemu_mutex_lock(bitmap->mutex); + bitmap->qmp_locked = qmp_locked; + qemu_mutex_unlock(bitmap->mutex); +} + +bool bdrv_dirty_bitmap_qmp_locked(BdrvDirtyBitmap *bitmap) +{ + return bitmap->qmp_locked; +} + /* Called with BQL taken. */ bool bdrv_dirty_bitmap_enabled(BdrvDirtyBitmap *bitmap) { @@ -194,6 +208,8 @@ DirtyBitmapStatus bdrv_dirty_bitmap_status(BdrvDirtyBitmap *bitmap) { if (bdrv_dirty_bitmap_frozen(bitmap)) { return DIRTY_BITMAP_STATUS_FROZEN; + } else if (bdrv_dirty_bitmap_qmp_locked(bitmap)) { + return DIRTY_BITMAP_STATUS_LOCKED; } else if (!bdrv_dirty_bitmap_enabled(bitmap)) { return DIRTY_BITMAP_STATUS_DISABLED; } else { |