mm/zswap.c: get swapper address_space by using macro

There is a proper macro to get the corresponding swapper address space
from a swap entry.  Instead of directly accessing "swapper_spaces" array,
use the "swap_address_space" macro.

Signed-off-by: Sunghan Suh <sunghan.suh@samsung.com>
Reviewed-by: Bob Liu <bob.liu@oracle.com>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Acked-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/zswap.c b/mm/zswap.c
index deda2b6..efed4c8 100644 (file)
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -409,7 +409,7 @@ static int zswap_get_swap_cache_page(swp_entry_t entry,
                                struct page **retpage)
 {
        struct page *found_page, *new_page = NULL;
-       struct address_space *swapper_space = &swapper_spaces[swp_type(entry)];
+       struct address_space *swapper_space = swap_address_space(entry);
        int err;
 
        *retpage = NULL;