block: Make bdrv_filter_default_perms() static

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-31-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 11 insertions, 6 deletions

diff --git a/block.c b/block.c
index fb94adcca4..54bc1c3b2d 100644
--- a/block.c
+++ b/block.c
@@ -2382,12 +2382,17 @@ int bdrv_child_refresh_perms(BlockDriverState *bs, BdrvChild *c, Error **errp)
     return bdrv_child_try_set_perm(c, perms, shared, errp);
 }
 
-void bdrv_filter_default_perms(BlockDriverState *bs, BdrvChild *c,
-                               const BdrvChildClass *child_class,
-                               BdrvChildRole role,
-                               BlockReopenQueue *reopen_queue,
-                               uint64_t perm, uint64_t shared,
-                               uint64_t *nperm, uint64_t *nshared)
+/*
+ * Default implementation for .bdrv_child_perm() for block filters:
+ * Forward CONSISTENT_READ, WRITE, WRITE_UNCHANGED, and RESIZE to the
+ * filtered child.
+ */
+static void bdrv_filter_default_perms(BlockDriverState *bs, BdrvChild *c,
+                                      const BdrvChildClass *child_class,
+                                      BdrvChildRole role,
+                                      BlockReopenQueue *reopen_queue,
+                                      uint64_t perm, uint64_t shared,
+                                      uint64_t *nperm, uint64_t *nshared)
 {
     *nperm = perm & DEFAULT_PERM_PASSTHROUGH;
     *nshared = (shared & DEFAULT_PERM_PASSTHROUGH) | DEFAULT_PERM_UNCHANGED;