block: Drop raw_refresh_limits()

The raw block driver was blindly copying all limits from bs->file,
even though: 1. the main bdrv_refresh_limits() already does this
for many of the limits, and 2. blindly copying from the children
can weaken any stricter limits that were already inherited from
the backing chain during the main bdrv_refresh_limits().  Also,
a future patch is about to move .request_alignment into
BlockLimits, and that is a limit that should NOT be copied from
other layers in the BDS chain.

Thus, we can completely drop raw_refresh_limits(), and rely on
the block layer setting up the proper limits.

Signed-off-by: Eric Blake <[email protected]>
Reviewed-by: Fam Zheng <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

diff --git a/block/raw_bsd.c b/block/raw_bsd.c
index 7f637914b7787a2dcfeb79b2717eae01201727aa..5855e84a680febd05b1e86cc07a4a2cdc757e54e 100644 (file)
--- a/block/raw_bsd.c
+++ b/block/raw_bsd.c
@@ -1,6 +1,6 @@
 /* BlockDriver implementation for "raw"
  *
- * Copyright (C) 2010, 2013, Red Hat, Inc.
+ * Copyright (C) 2010-2016 Red Hat, Inc.
  * Copyright (C) 2010, Blue Swirl <[email protected]>
  * Copyright (C) 2009, Anthony Liguori <[email protected]>
  *
@@ -150,11 +150,6 @@ static int raw_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
     return bdrv_get_info(bs->file->bs, bdi);
 }
 
-static void raw_refresh_limits(BlockDriverState *bs, Error **errp)
-{
-    bs->bl = bs->file->bs->bl;
-}
-
 static int raw_truncate(BlockDriverState *bs, int64_t offset)
 {
     return bdrv_truncate(bs->file->bs, offset);
@@ -252,7 +247,6 @@ BlockDriver bdrv_raw = {
     .bdrv_getlength       = &raw_getlength,
     .has_variable_length  = true,
     .bdrv_get_info        = &raw_get_info,
-    .bdrv_refresh_limits  = &raw_refresh_limits,
     .bdrv_probe_blocksizes = &raw_probe_blocksizes,
     .bdrv_probe_geometry  = &raw_probe_geometry,
     .bdrv_media_changed   = &raw_media_changed,