diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2020-12-02 17:12:44 +0100 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2020-12-13 15:06:05 +0000 |
| commit | 7f3f227b41e81f8669e906c49a240c1678c65cfe (patch) | |
| tree | 1e51c3a036622f52542214a91d7fbd997ce6959f /drivers/hv/hv_balloon.c | |
| parent | 5c641fee4ccfd27520b7863bf4a66491faea6d2a (diff) | |
| download | lwn-7f3f227b41e81f8669e906c49a240c1678c65cfe.tar.gz lwn-7f3f227b41e81f8669e906c49a240c1678c65cfe.zip | |
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/hv_balloon.c')
| -rw-r--r-- | drivers/hv/hv_balloon.c | 2 |
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++; |