From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with ESMTP id E23308D004A for ; Sat, 12 Feb 2011 13:49:48 -0500 (EST) Received: from unknown (HELO localhost.localdomain) (zcncxNmDysja2tXBptWToZWJlF6Wp6IuYnI=@[200.157.204.20]) (envelope-sender ) by smtp-01.mandic.com.br (qmail-ldap-1.03) with AES256-SHA encrypted SMTP for ; 12 Feb 2011 18:49:45 -0000 From: Cesar Eduardo Barros Subject: [PATCH 17/24] sys_swapon: simplify error flow in read_swap_header Date: Sat, 12 Feb 2011 16:49:18 -0200 Message-Id: <1297536565-8059-17-git-send-email-cesarb@cesarb.net> In-Reply-To: <4D56D5F9.8000609@cesarb.net> References: <4D56D5F9.8000609@cesarb.net> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: Cesar Eduardo Barros Since there is no cleanup to do, there is no reason to jump to a label. Return directly instead. Signed-off-by: Cesar Eduardo Barros --- mm/swapfile.c | 15 ++++++--------- 1 files changed, 6 insertions(+), 9 deletions(-) diff --git a/mm/swapfile.c b/mm/swapfile.c index 314fb21..33c939d 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -1928,7 +1928,7 @@ static unsigned long read_swap_header(struct swap_info_struct *p, if (memcmp("SWAPSPACE2", swap_header->magic.magic, 10)) { printk(KERN_ERR "Unable to find swap-space signature\n"); - goto bad_swap; + return 0; } /* swap partition endianess hack... */ @@ -1944,7 +1944,7 @@ static unsigned long read_swap_header(struct swap_info_struct *p, printk(KERN_WARNING "Unable to handle swap header version %d\n", swap_header->info.version); - goto bad_swap; + return 0; } p->lowest_bit = 1; @@ -1976,22 +1976,19 @@ static unsigned long read_swap_header(struct swap_info_struct *p, p->highest_bit = maxpages - 1; if (!maxpages) - goto bad_swap; + return 0; swapfilepages = i_size_read(inode) >> PAGE_SHIFT; if (swapfilepages && maxpages > swapfilepages) { printk(KERN_WARNING "Swap area shorter than signature indicates\n"); - goto bad_swap; + return 0; } if (swap_header->info.nr_badpages && S_ISREG(inode->i_mode)) - goto bad_swap; + return 0; if (swap_header->info.nr_badpages > MAX_SWAP_BADPAGES) - goto bad_swap; + return 0; return maxpages; - -bad_swap: - return 0; } SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) -- 1.7.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org