[xen staging] libxenguest: use bitmap_alloc

[patchbot@xxxxxxx]

commit 3cccdae45242dab27198b8e150be0c85acd5d3c9
Author:     Olaf Hering <olaf@xxxxxxxxx>
AuthorDate: Wed Sep 9 11:06:37 2020 +0000
Commit:     Wei Liu <wl@xxxxxxx>
CommitDate: Wed Sep 9 11:07:31 2020 +0000

    libxenguest: use bitmap_alloc
    
    Use existing helper to allocate a bitmap.
    
    Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    [ wei: rebase to staging ]
    Signed-off-by: Wei Liu <wl@xxxxxxx>
---
 tools/libs/guest/xg_sr_save.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/libs/guest/xg_sr_save.c b/tools/libs/guest/xg_sr_save.c
index d74c72cba6..2ba7c3200c 100644
--- a/tools/libs/guest/xg_sr_save.c
+++ b/tools/libs/guest/xg_sr_save.c
@@ -809,7 +809,7 @@ static int setup(struct xc_sr_context *ctx)
         xch, dirty_bitmap, NRPAGES(bitmap_size(ctx->save.p2m_size)));
     ctx->save.batch_pfns = malloc(MAX_BATCH_SIZE *
                                   sizeof(*ctx->save.batch_pfns));
-    ctx->save.deferred_pages = calloc(1, bitmap_size(ctx->save.p2m_size));
+    ctx->save.deferred_pages = bitmap_alloc(ctx->save.p2m_size);
 
     if ( !ctx->save.batch_pfns || !dirty_bitmap || !ctx->save.deferred_pages )
     {
--
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