linux-kernel - [PATCHv2 05/24] sys_swapon: simplify error return from swap

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Message-Id: <1299343345-3984-6-git-send-email-cesarb@cesarb.net>
Date:	Sat,  5 Mar 2011 13:42:06 -0300
From:	Cesar Eduardo Barros <cesarb@...arb.net>
To:	linux-mm@...ck.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Minchan Kim <minchan.kim@...il.com>,
	Jens Axboe <jaxboe@...ionio.com>, linux-kernel@...r.kernel.org,
	Eric B Munson <emunson@...bm.net>,
	Cesar Eduardo Barros <cesarb@...arb.net>
Subject: [PATCHv2 05/24] sys_swapon: simplify error return from swap_info allocation

At this point in sys_swapon, there is nothing to free. Return directly
instead of jumping to the cleanup block at the end of the function.

Signed-off-by: Cesar Eduardo Barros <cesarb@...arb.net>
Tested-by: Eric B Munson <emunson@...bm.net>
Acked-by: Eric B Munson <emunson@...bm.net>
---
 mm/swapfile.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/mm/swapfile.c b/mm/swapfile.c
index 91ca0f0..8969b37 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1918,10 +1918,8 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
 		return -EPERM;
 
 	p = alloc_swap_info();
-	if (IS_ERR(p)) {
-		error = PTR_ERR(p);
-		goto out;
-	}
+	if (IS_ERR(p))
+		return PTR_ERR(p);
 
 	name = getname(specialfile);
 	error = PTR_ERR(name);
-- 
1.7.4

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