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mm/zsmalloc: use BUG_ON instead of if condition followed by BUG.
author
zhouchuangao
<zhouchuangao@vivo.com>
Wed, 5 May 2021 01:40:00 +0000
(18:40 -0700)
committer
Linus Torvalds
<torvalds@linux-foundation.org>
Wed, 5 May 2021 18:27:27 +0000
(11:27 -0700)
It can be optimized at compile time.
Link:
https://lkml.kernel.org/r/1616727798-9110-1-git-send-email-zhouchuangao@vivo.com
Signed-off-by: zhouchuangao <zhouchuangao@vivo.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/zsmalloc.c
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diff --git
a/mm/zsmalloc.c
b/mm/zsmalloc.c
index 30c358b72025102d3dc9d725555bca50105e76cc..58697f7a43f8eacb405e9d1522ae7b423c9281a3 100644
(file)
--- a/
mm/zsmalloc.c
+++ b/
mm/zsmalloc.c
@@
-1987,8
+1987,7
@@
static int zs_page_migrate(struct address_space *mapping, struct page *newpage,
head = obj_to_head(page, addr);
if (head & OBJ_ALLOCATED_TAG) {
handle = head & ~OBJ_ALLOCATED_TAG;
- if (!testpin_tag(handle))
- BUG();
+ BUG_ON(!testpin_tag(handle));
old_obj = handle_to_obj(handle);
obj_to_location(old_obj, &dummy, &obj_idx);
@@
-2035,8
+2034,7
@@
unpin_objects:
head = obj_to_head(page, addr);
if (head & OBJ_ALLOCATED_TAG) {
handle = head & ~OBJ_ALLOCATED_TAG;
- if (!testpin_tag(handle))
- BUG();
+ BUG_ON(!testpin_tag(handle));
unpin_tag(handle);
}
}