zsmalloc: drop unused member 'mapping_area->huge'

When unmapping a huge class page in zs_unmap_object, the page will be
unmapped by kmap_atomic.  the "!area->huge" branch in __zs_unmap_object
is alway true, and no code set "area->huge" now, so we can drop it.

Signed-off-by: YiPing Xu <xuyiping@huawei.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 6 deletions

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 2d7c4c11fc63..43e4cbcce5af 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -281,7 +281,6 @@ struct mapping_area {
 #endif
         char *vm_addr; /* address of kmap_atomic()'ed pages */
         enum zs_mapmode vm_mm; /* mapping mode */
-        bool huge;
 };
 
 static int create_handle_cache(struct zs_pool *pool)
@@ -1127,11 +1126,9 @@ static void __zs_unmap_object(struct mapping_area *area,
                 goto out;
 
         buf = area->vm_buf;
-        if (!area->huge) {
-                buf = buf + ZS_HANDLE_SIZE;
-                size -= ZS_HANDLE_SIZE;
-                off += ZS_HANDLE_SIZE;
-        }
+        buf = buf + ZS_HANDLE_SIZE;
+        size -= ZS_HANDLE_SIZE;
+        off += ZS_HANDLE_SIZE;
 
         sizes[0] = PAGE_SIZE - off;
         sizes[1] = size - sizes[0];