[PATCH] z3fold: remove the unnecessary limit in z3fold_compact_page

From	zhongjiang <zhongjiang@huawei.com>
Newsgroups	linux.kernel
Subject	[PATCH] z3fold: remove the unnecessary limit in z3fold_compact_page
Date	2016-10-14 15:40 +0200
Message-ID	<ssaSm-1Q1-17@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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From: zhong jiang <zhongjiang@huawei.com>

z3fold compact page has nothing with the last_chunks. even if
last_chunks is not free, compact page will proceed.

The patch just remove the limit without functional change.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
---
 mm/z3fold.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/z3fold.c b/mm/z3fold.c
index e8fc216..4668e1c 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -258,8 +258,7 @@ static int z3fold_compact_page(struct z3fold_header *zhdr)
 
 
 	if (!test_bit(MIDDLE_CHUNK_MAPPED, &page->private) &&
-	    zhdr->middle_chunks != 0 &&
-	    zhdr->first_chunks == 0 && zhdr->last_chunks == 0) {
+	    zhdr->middle_chunks != 0 && zhdr->first_chunks == 0) {
 		memmove(beg + ZHDR_SIZE_ALIGNED,
 			beg + (zhdr->start_middle << CHUNK_SHIFT),
 			zhdr->middle_chunks << CHUNK_SHIFT);
-- 
1.8.3.1

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[PATCH] z3fold: remove the unnecessary limit in z3fold_compact_page zhongjiang <zhongjiang@huawei.com> - 2016-10-14 15:40 +0200
  Re: [PATCH] z3fold: remove the unnecessary limit in z3fold_compact_page Vitaly Wool <vitalywool@gmail.com> - 2016-10-14 21:30 +0200
    Re: [PATCH] z3fold: remove the unnecessary limit in z3fold_compact_page zhong jiang <zhongjiang@huawei.com> - 2016-10-17 04:00 +0200

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