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Subject[PATCH -next] mm/z3fold.c: remove set but not used variable 'newpage'
Date
Fixes gcc '-Wunused-but-set-variable' warning:

mm/z3fold.c: In function 'compact_single_buddy':
mm/z3fold.c:693:16: warning:
variable 'newpage' set but not used [-Wunused-but-set-variable]

mm/z3fold.c:664:13: warning:
variable 'bud' set but not used [-Wunused-but-set-variable]

It is never used, so can be removed.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
mm/z3fold.c | 6 ------
1 file changed, 6 deletions(-)

diff --git a/mm/z3fold.c b/mm/z3fold.c
index 25713a4a7186..d48d0ec3bcdd 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -661,7 +661,6 @@ static struct z3fold_header *compact_single_buddy(struct z3fold_header *zhdr)
struct z3fold_pool *pool = zhdr_to_pool(zhdr);
void *p = zhdr;
unsigned long old_handle = 0;
- enum buddy bud;
size_t sz = 0;
struct z3fold_header *new_zhdr = NULL;
int first_idx = __idx(zhdr, FIRST);
@@ -673,24 +672,20 @@ static struct z3fold_header *compact_single_buddy(struct z3fold_header *zhdr)
* the page lock is already taken
*/
if (zhdr->first_chunks && zhdr->slots->slot[first_idx]) {
- bud = FIRST;
p += ZHDR_SIZE_ALIGNED;
sz = zhdr->first_chunks << CHUNK_SHIFT;
old_handle = (unsigned long)&zhdr->slots->slot[first_idx];
} else if (zhdr->middle_chunks && zhdr->slots->slot[middle_idx]) {
- bud = MIDDLE;
p += zhdr->start_middle << CHUNK_SHIFT;
sz = zhdr->middle_chunks << CHUNK_SHIFT;
old_handle = (unsigned long)&zhdr->slots->slot[middle_idx];
} else if (zhdr->last_chunks && zhdr->slots->slot[last_idx]) {
- bud = LAST;
p += PAGE_SIZE - (zhdr->last_chunks << CHUNK_SHIFT);
sz = zhdr->last_chunks << CHUNK_SHIFT;
old_handle = (unsigned long)&zhdr->slots->slot[last_idx];
}

if (sz > 0) {
- struct page *newpage;
enum buddy new_bud = HEADLESS;
short chunks = size_to_chunks(sz);
void *q;
@@ -699,7 +694,6 @@ static struct z3fold_header *compact_single_buddy(struct z3fold_header *zhdr)
if (!new_zhdr)
return NULL;

- newpage = virt_to_page(new_zhdr);
if (WARN_ON(new_zhdr == zhdr))
goto out_fail;


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