From: Peng Hao <penghao122@sina.com.cn>
To: linux-mm@kvack.org
Cc: akpm@linux-foundation.org, pasha.tatashin@oracle.com,
osalvador@suse.de, linux-kernel@vger.kernel.org,
Peng Hao <peng.hao2@zte.com.cn>
Subject: [PATCH] mm/sparse: remove a check that compare if unsigned variable is negative
Date: Sat, 13 Oct 2018 12:15:19 -0400 [thread overview]
Message-ID: <1539447319-5383-1-git-send-email-penghao122@sina.com.cn> (raw)
From: Peng Hao <peng.hao2@zte.com.cn>
In all use locations for for_each_present_section_nr, variable
section_nr is unsigned. It is unnecessary to test if it is negative.
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
---
mm/sparse.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/sparse.c b/mm/sparse.c
index 10b07ee..a6f9f22 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -196,8 +196,7 @@ static inline int next_present_section_nr(int section_nr)
}
#define for_each_present_section_nr(start, section_nr) \
for (section_nr = next_present_section_nr(start-1); \
- ((section_nr >= 0) && \
- (section_nr <= __highest_present_section_nr)); \
+ section_nr <= __highest_present_section_nr; \
section_nr = next_present_section_nr(section_nr))
static inline unsigned long first_present_section_nr(void)
--
1.8.3.1
next reply other threads:[~2018-10-13 16:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-13 16:15 Peng Hao [this message]
2018-10-13 17:04 ` Pavel Tatashin
2018-10-15 1:08 ` [PATCH] mm/sparse: remove a check that compare if unsignedvariable " peng.hao2
2018-10-19 8:28 ` [PATCH] mm/sparse: remove a check that compare if unsigned variable " Wei Yang
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