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| author | Cesar Eduardo Barros <cesarb@cesarb.net> | 2011-03-22 16:33:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-22 17:44:08 -0700 |
| commit | 38719025384cf7121331bd6d41c062d3c5f7bb91 (patch) | |
| tree | 8848283db6cd61b426491f17de38d9bc15697514 /mm | |
| parent | ca8bd38bf6f05481c4155fc444178151884f65d0 (diff) | |
| download | linux-38719025384cf7121331bd6d41c062d3c5f7bb91.tar.bz2 | |
sys_swapon: simplify error flow in read_swap_header()
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 <cesarb@cesarb.net>
Tested-by: Eric B Munson <emunson@mgebm.net>
Acked-by: Eric B Munson <emunson@mgebm.net>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/swapfile.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index 5e13bff1764c..058a9dfefefd 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) |