block: Move some bdrv_*_all() functions to BB

Move bdrv_commit_all() and bdrv_flush_all() to the BlockBackend level.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

block.c

@@ -2521,26 +2521,6 @@ ro_cleanup:
     return ret;
 }
 
-int bdrv_commit_all(void)
-{
-    BlockDriverState *bs;
-
-    QTAILQ_FOREACH(bs, &bdrv_states, device_list) {
-        AioContext *aio_context = bdrv_get_aio_context(bs);
-
-        aio_context_acquire(aio_context);
-        if (bs->drv && bs->backing) {
-            int ret = bdrv_commit(bs);
-            if (ret < 0) {
-                aio_context_release(aio_context);
-                return ret;
-            }
-        }
-        aio_context_release(aio_context);
-    }
-    return 0;
-}
-
 /*
  * Return values:
  * 0        - success

block/block-backend.c

@@ -904,11 +904,6 @@ int blk_flush(BlockBackend *blk)
     return bdrv_flush(blk->bs);
 }
 
-int blk_flush_all(void)
-{
-    return bdrv_flush_all();
-}
-
 void blk_drain(BlockBackend *blk)
 {
     if (blk->bs) {
@@ -1357,5 +1352,42 @@ BlockBackendRootState *blk_get_root_state(BlockBackend *blk)
 
 int blk_commit_all(void)
 {
-    return bdrv_commit_all();
+    BlockBackend *blk = NULL;
+
+    while ((blk = blk_all_next(blk)) != NULL) {
+        AioContext *aio_context = blk_get_aio_context(blk);
+
+        aio_context_acquire(aio_context);
+        if (blk_is_inserted(blk) && blk->bs->backing) {
+            int ret = bdrv_commit(blk->bs);
+            if (ret < 0) {
+                aio_context_release(aio_context);
+                return ret;
+            }
+        }
+        aio_context_release(aio_context);
+    }
+    return 0;
+}
+
+int blk_flush_all(void)
+{
+    BlockBackend *blk = NULL;
+    int result = 0;
+
+    while ((blk = blk_all_next(blk)) != NULL) {
+        AioContext *aio_context = blk_get_aio_context(blk);
+        int ret;
+
+        aio_context_acquire(aio_context);
+        if (blk_is_inserted(blk)) {
+            ret = blk_flush(blk);
+            if (ret < 0 && !result) {
+                result = ret;
+            }
+        }
+        aio_context_release(aio_context);
+    }
+
+    return result;
 }

block/io.c

@@ -1445,26 +1445,6 @@ int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs,
                              BDRV_REQ_ZERO_WRITE | flags);
 }
 
-int bdrv_flush_all(void)
-{
-    BlockDriverState *bs = NULL;
-    int result = 0;
-
-    while ((bs = bdrv_next(bs))) {
-        AioContext *aio_context = bdrv_get_aio_context(bs);
-        int ret;
-
-        aio_context_acquire(aio_context);
-        ret = bdrv_flush(bs);
-        if (ret < 0 && !result) {
-            result = ret;
-        }
-        aio_context_release(aio_context);
-    }
-
-    return result;
-}
-
 typedef struct BdrvCoGetBlockStatusData {
     BlockDriverState *bs;
     BlockDriverState *base;

include/block/block.h

@@ -274,7 +274,6 @@ int64_t bdrv_get_allocated_file_size(BlockDriverState *bs);
 void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr);
 void bdrv_refresh_limits(BlockDriverState *bs, Error **errp);
 int bdrv_commit(BlockDriverState *bs);
-int bdrv_commit_all(void);
 int bdrv_change_backing_file(BlockDriverState *bs,
     const char *backing_file, const char *backing_fmt);
 void bdrv_register(BlockDriver *bdrv);
@@ -373,7 +372,6 @@ int bdrv_inactivate_all(void);
 /* Ensure contents are flushed to disk.  */
 int bdrv_flush(BlockDriverState *bs);
 int coroutine_fn bdrv_co_flush(BlockDriverState *bs);
-int bdrv_flush_all(void);
 void bdrv_close_all(void);
 void bdrv_drain(BlockDriverState *bs);
 void bdrv_drain_all(void);

stubs/Makefile.objs

@@ -1,5 +1,5 @@
 stub-obj-y += arch-query-cpu-def.o
-stub-obj-y += bdrv-commit-all.o
+stub-obj-y += blk-commit-all.o
 stub-obj-y += blockdev-close-all-bdrv-states.o
 stub-obj-y += clock-warp.o
 stub-obj-y += cpu-get-clock.o

stubs/blk-commit-all.c

@@ -1,8 +1,8 @@
 #include "qemu/osdep.h"
 #include "qemu-common.h"
-#include "block/block.h"
+#include "sysemu/block-backend.h"
 
-int bdrv_commit_all(void)
+int blk_commit_all(void)
 {
     return 0;
 }