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authorVitaly Kuznetsov <vkuznets@redhat.com>2020-12-02 17:12:44 +0100
committerWei Liu <wei.liu@kernel.org>2020-12-13 15:06:05 +0000
commit7f3f227b41e81f8669e906c49a240c1678c65cfe (patch)
tree1e51c3a036622f52542214a91d7fbd997ce6959f /drivers/hv
parent5c641fee4ccfd27520b7863bf4a66491faea6d2a (diff)
hv_balloon: simplify math in alloc_balloon_pages()
'alloc_unit' in alloc_balloon_pages() is either '512' for 2M allocations or '1' for 4k allocations. So 1 << get_order(alloc_unit << PAGE_SHIFT) equals to 'alloc_unit' and the for loop basically sets all them offline. Simplify the math to improve the readability. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/20201202161245.2406143-2-vkuznets@redhat.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/hv_balloon.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index eb56e09ae15f..da3b6bd2367c 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -1238,7 +1238,7 @@ static unsigned int alloc_balloon_pages(struct hv_dynmem_device *dm,
split_page(pg, get_order(alloc_unit << PAGE_SHIFT));
/* mark all pages offline */
- for (j = 0; j < (1 << get_order(alloc_unit << PAGE_SHIFT)); j++)
+ for (j = 0; j < alloc_unit; j++)
__SetPageOffline(pg + j);
bl_resp->range_count++;