From: WANG Cong <amwang@redhat.com>
Date: Tue, 1 Dec 2009 14:28:10 +0000 (+0900)
Subject: percpu: refactor the code in pcpu_[de]populate_chunk()
X-Git-Tag: v2.6.34-rc1~223^2~12
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=22b737f4c75197372d64afc6ed1bccd58c00e549;p=linux.git

percpu: refactor the code in pcpu_[de]populate_chunk()

Using break statement at the end of a for loop is confusing,
refactor it by replacing the for loop.

Signed-off-by: WANG Cong <amwang@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---

diff --git a/mm/percpu.c b/mm/percpu.c
index e2e80fc78601..77c6f7994a46 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -886,11 +886,10 @@ static void pcpu_depopulate_chunk(struct pcpu_chunk *chunk, int off, int size)
 	int rs, re;
 
 	/* quick path, check whether it's empty already */
-	pcpu_for_each_unpop_region(chunk, rs, re, page_start, page_end) {
-		if (rs == page_start && re == page_end)
-			return;
-		break;
-	}
+	rs = page_start;
+	pcpu_next_unpop(chunk, &rs, &re, page_end);
+	if (rs == page_start && re == page_end)
+		return;
 
 	/* immutable chunks can't be depopulated */
 	WARN_ON(chunk->immutable);
@@ -941,11 +940,10 @@ static int pcpu_populate_chunk(struct pcpu_chunk *chunk, int off, int size)
 	int rs, re, rc;
 
 	/* quick path, check whether all pages are already there */
-	pcpu_for_each_pop_region(chunk, rs, re, page_start, page_end) {
-		if (rs == page_start && re == page_end)
-			goto clear;
-		break;
-	}
+	rs = page_start;
+	pcpu_next_pop(chunk, &rs, &re, page_end);
+	if (rs == page_start && re == page_end)
+		goto clear;
 
 	/* need to allocate and map pages, this chunk can't be immutable */
 	WARN_ON(chunk->immutable);