From: Bo Liu <bo-liu@hotmail.com>
To: akpm@linux-foundation.org
Cc: hugh.dickins@tiscali.co.uk, linux-mm@kvack.org
Subject: [PATCH] try_to_unuse : remove redundant swap_count()
Date: Tue, 20 Oct 2009 15:09:20 +0800 [thread overview]
Message-ID: <COL115-W535064AC2F576372C1BB1B9FC00@phx.gbl> (raw)
While comparing with swcount,it's no need to
call swap_count(). Just as int set_start_mm =
(*swap_map>= swcount) is ok.
Signed-off-by: Bo Liu <bo-liu@hotmail.com>
---
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 63ce10f..2456fc6 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1152,7 +1152,7 @@ static int try_to_unuse(unsigned int type)
retval = unuse_mm(mm, entry, page);
if (set_start_mm &&
- swap_count(*swap_map) < swcount) {
+ ((*swap_map) < swcount)) {
mmput(new_start_mm);
atomic_inc(&mm->mm_users);
new_start_mm = mm;
--
1.6.0.6
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next reply other threads:[~2009-10-20 7:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-20 7:09 Bo Liu [this message]
2009-10-20 12:06 ` KAMEZAWA Hiroyuki
2009-10-21 1:12 ` Bo Liu
2009-10-21 1:25 ` Bob Liu
2009-10-28 20:31 ` Hugh Dickins
2009-10-28 20:34 ` [PATCH] mm: remove incorrect swap_count() from try_to_unuse() Hugh Dickins
2009-10-28 23:38 ` KAMEZAWA Hiroyuki
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