The patch titled
Subject: z3fold: simplify the zhdr initialization code in init_z3fold_page()
has been added to the -mm tree. Its filename is
z3fold-simplify-the-zhdr-initialization-code-in-init_z3fold_page.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/z3fold-simplify-the-zhdr-initialization-code-in-init_z3fold_page.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/z3fold-simplify-the-zhdr-initialization-code-in-init_z3fold_page.patch
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------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: z3fold: simplify the zhdr initialization code in init_z3fold_page()
We can simplify the zhdr initialization by memset() the zhdr first instead
of set struct member to zero one by one. This would also make code more
compact and clear.
Link: https://lkml.kernel.org/r/20210120085851.16159-1-linmiaohe@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Vitaly Wool <vitaly.wool@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/z3fold.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
--- a/mm/z3fold.c~z3fold-simplify-the-zhdr-initialization-code-in-init_z3fold_page
+++ a/mm/z3fold.c
@@ -413,16 +413,10 @@ static struct z3fold_header *init_z3fold
if (!slots)
return NULL;
+ memset(zhdr, 0, sizeof(*zhdr));
spin_lock_init(&zhdr->page_lock);
kref_init(&zhdr->refcount);
- zhdr->first_chunks = 0;
- zhdr->middle_chunks = 0;
- zhdr->last_chunks = 0;
- zhdr->first_num = 0;
- zhdr->start_middle = 0;
zhdr->cpu = -1;
- zhdr->foreign_handles = 0;
- zhdr->mapped_count = 0;
zhdr->slots = slots;
zhdr->pool = pool;
INIT_LIST_HEAD(&zhdr->buddy);
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
mm-hugetlb-fix-potential-double-free-in-hugetlb_register_node-error-path.patch
mm-hugetlb-avoid-unnecessary-hugetlb_acct_memory-call.patch
mm-hugetlb-use-helper-huge_page_order-and-pages_per_huge_page.patch
z3fold-remove-unused-attribute-for-release_z3fold_page.patch
z3fold-simplify-the-zhdr-initialization-code-in-init_z3fold_page.patch
mm-compaction-remove-duplicated-vm_bug_on_page-pagelocked.patch
hugetlbfs-remove-useless-bug_oninode-in-hugetlbfs_setattr.patch
hugetlbfs-use-helper-macro-default_hstate-in-init_hugetlbfs_fs.patch
hugetlbfs-correct-obsolete-function-name-in-hugetlbfs_read_iter.patch
hugetlbfs-remove-meaningless-variable-avoid_reserve.patch
mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch
