[Qemu-block] [PATCH] block: change some function return type to bool

[Li Qiang]

Signed-off-by: Li Qiang <liq...@163.com>
---
 block/block-backend.c          | 8 ++++----
 include/sysemu/block-backend.h | 6 +++---
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/block/block-backend.c b/block/block-backend.c
index dc0cd57724..2a8f3b55f8 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -1708,7 +1708,7 @@ void blk_error_action(BlockBackend *blk, BlockErrorAction 
action,
     }
 }
 
-int blk_is_read_only(BlockBackend *blk)
+bool blk_is_read_only(BlockBackend *blk)
 {
     BlockDriverState *bs = blk_bs(blk);
 
@@ -1719,18 +1719,18 @@ int blk_is_read_only(BlockBackend *blk)
     }
 }
 
-int blk_is_sg(BlockBackend *blk)
+bool blk_is_sg(BlockBackend *blk)
 {
     BlockDriverState *bs = blk_bs(blk);
 
     if (!bs) {
-        return 0;
+        return false;
     }
 
     return bdrv_is_sg(bs);
 }
 
-int blk_enable_write_cache(BlockBackend *blk)
+bool blk_enable_write_cache(BlockBackend *blk)
 {
     return blk->enable_write_cache;
 }
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 830d873f24..c96bcdee14 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -166,9 +166,9 @@ BlockErrorAction blk_get_error_action(BlockBackend *blk, 
bool is_read,
                                       int error);
 void blk_error_action(BlockBackend *blk, BlockErrorAction action,
                       bool is_read, int error);
-int blk_is_read_only(BlockBackend *blk);
-int blk_is_sg(BlockBackend *blk);
-int blk_enable_write_cache(BlockBackend *blk);
+bool blk_is_read_only(BlockBackend *blk);
+bool blk_is_sg(BlockBackend *blk);
+bool blk_enable_write_cache(BlockBackend *blk);
 void blk_set_enable_write_cache(BlockBackend *blk, bool wce);
 void blk_invalidate_cache(BlockBackend *blk, Error **errp);
 bool blk_is_inserted(BlockBackend *blk);
-- 
2.17.1