qcow2: Take locks for accessing bs->file

[mirror_qemu.git] / block / filter-compress.c

diff --git a/block/filter-compress.c b/block/filter-compress.c
index 083aaef53c4b2d1319ddfc827b4f8e7d657db400..e3fc82f3221c7e21dff6b9344e9fc8d8e26cda36 100644 (file)
--- a/block/filter-compress.c
+++ b/block/filter-compress.c
@@ -55,38 +55,36 @@ static int compress_open(BlockDriverState *bs, QDict *options, int flags,
 }
 
 
-static int64_t coroutine_fn compress_co_getlength(BlockDriverState *bs)
+static int64_t coroutine_fn GRAPH_RDLOCK
+compress_co_getlength(BlockDriverState *bs)
 {
     return bdrv_co_getlength(bs->file->bs);
 }
 
 
-static int coroutine_fn compress_co_preadv_part(BlockDriverState *bs,
-                                                int64_t offset, int64_t bytes,
-                                                QEMUIOVector *qiov,
-                                                size_t qiov_offset,
-                                                BdrvRequestFlags flags)
+static int coroutine_fn GRAPH_RDLOCK
+compress_co_preadv_part(BlockDriverState *bs, int64_t offset, int64_t bytes,
+                        QEMUIOVector *qiov, size_t qiov_offset,
+                        BdrvRequestFlags flags)
 {
     return bdrv_co_preadv_part(bs->file, offset, bytes, qiov, qiov_offset,
                                flags);
 }
 
 
-static int coroutine_fn compress_co_pwritev_part(BlockDriverState *bs,
-                                                 int64_t offset,
-                                                 int64_t bytes,
-                                                 QEMUIOVector *qiov,
-                                                 size_t qiov_offset,
-                                                 BdrvRequestFlags flags)
+static int coroutine_fn GRAPH_RDLOCK
+compress_co_pwritev_part(BlockDriverState *bs, int64_t offset, int64_t bytes,
+                         QEMUIOVector *qiov, size_t qiov_offset,
+                         BdrvRequestFlags flags)
 {
     return bdrv_co_pwritev_part(bs->file, offset, bytes, qiov, qiov_offset,
                                 flags | BDRV_REQ_WRITE_COMPRESSED);
 }
 
 
-static int coroutine_fn compress_co_pwrite_zeroes(BlockDriverState *bs,
-                                                  int64_t offset, int64_t bytes,
-                                                  BdrvRequestFlags flags)
+static int coroutine_fn GRAPH_RDLOCK
+compress_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int64_t bytes,
+                          BdrvRequestFlags flags)
 {
     return bdrv_co_pwrite_zeroes(bs->file, offset, bytes, flags);
 }
@@ -99,7 +97,8 @@ compress_co_pdiscard(BlockDriverState *bs, int64_t offset, int64_t bytes)
 }
 
 
-static void compress_refresh_limits(BlockDriverState *bs, Error **errp)
+static void GRAPH_RDLOCK
+compress_refresh_limits(BlockDriverState *bs, Error **errp)
 {
     BlockDriverInfo bdi;
     int ret;
@@ -117,14 +116,14 @@ static void compress_refresh_limits(BlockDriverState *bs, Error **errp)
 }
 
 
-static void coroutine_fn
+static void coroutine_fn GRAPH_RDLOCK
 compress_co_eject(BlockDriverState *bs, bool eject_flag)
 {
     bdrv_co_eject(bs->file->bs, eject_flag);
 }
 
 
-static void coroutine_fn
+static void coroutine_fn GRAPH_RDLOCK
 compress_co_lock_medium(BlockDriverState *bs, bool locked)
 {
     bdrv_co_lock_medium(bs->file->bs, locked);
@@ -148,7 +147,6 @@ static BlockDriver bdrv_compress = {
     .bdrv_co_eject                      = compress_co_eject,
     .bdrv_co_lock_medium                = compress_co_lock_medium,
 
-    .has_variable_length                = true,
     .is_filter                          = true,
 };