diff options
| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2018-07-04 02:12:49 -0400 |
|---|---|---|
| committer | John Snow <jsnow@redhat.com> | 2018-07-04 02:12:49 -0400 |
| commit | 58f72b965e9e1820d246329461216c4d13140122 (patch) | |
| tree | c07b126cfe42a6f885d5f1412d9b745c92555fcd /migration/block-dirty-bitmap.c | |
| parent | 92bcea40d3aac62853e60426bd109b748d4d1cd2 (diff) | |
dirty-bitmap: fix double lock on bitmap enabling
Bitmap lock/unlock were added to bdrv_enable_dirty_bitmap in
8b1402ce80d, but some places were not updated correspondingly, which
leads to trying to take this lock twice, which is dead-lock. Fix this.
Actually, iotest 199 (about dirty bitmap postcopy migration) is broken
now, and this fixes it.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20180625165745.25259-3-vsementsov@virtuozzo.com
Signed-off-by: John Snow <jsnow@redhat.com>
Diffstat (limited to 'migration/block-dirty-bitmap.c')
| -rw-r--r-- | migration/block-dirty-bitmap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c index 3bafbbdc4c..477826330c 100644 --- a/migration/block-dirty-bitmap.c +++ b/migration/block-dirty-bitmap.c @@ -511,7 +511,7 @@ void dirty_bitmap_mig_before_vm_start(void) DirtyBitmapLoadBitmapState *b = item->data; if (b->migrated) { - bdrv_enable_dirty_bitmap(b->bitmap); + bdrv_enable_dirty_bitmap_locked(b->bitmap); } else { bdrv_dirty_bitmap_enable_successor(b->bitmap); } @@ -547,7 +547,7 @@ static void dirty_bitmap_load_complete(QEMUFile *f, DirtyBitmapLoadState *s) if (enabled_bitmaps == NULL) { /* in postcopy */ bdrv_reclaim_dirty_bitmap_locked(s->bs, s->bitmap, &error_abort); - bdrv_enable_dirty_bitmap(s->bitmap); + bdrv_enable_dirty_bitmap_locked(s->bitmap); } else { /* target not started, successor must be empty */ int64_t count = bdrv_get_dirty_count(s->bitmap); |