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authorCesar Eduardo Barros <cesarb@cesarb.net>2011-03-22 16:33:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-22 17:44:06 -0700
commit730c0581c82dbc5be2f41a2d85bde6bad11bc8a4 (patch)
treede06f9f0e12ec8fe963a0bca3835ef0a72dd9191
parent2542e5134d2c19a9e6a4e641ef78cac6bccebd9b (diff)
downloadop-kernel-dev-730c0581c82dbc5be2f41a2d85bde6bad11bc8a4.zip
op-kernel-dev-730c0581c82dbc5be2f41a2d85bde6bad11bc8a4.tar.gz
sys_swapon: simplify error flow in alloc_swap_info()
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: Pekka Enberg <penberg@kernel.org> 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>
-rw-r--r--mm/swapfile.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 4d457d69..4d89c4c 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1848,7 +1848,6 @@ static struct swap_info_struct *alloc_swap_info(void)
{
struct swap_info_struct *p;
unsigned int type;
- int error;
p = kzalloc(sizeof(*p), GFP_KERNEL);
if (!p)
@@ -1859,11 +1858,10 @@ static struct swap_info_struct *alloc_swap_info(void)
if (!(swap_info[type]->flags & SWP_USED))
break;
}
- error = -EPERM;
if (type >= MAX_SWAPFILES) {
spin_unlock(&swap_lock);
kfree(p);
- goto out;
+ return ERR_PTR(-EPERM);
}
if (type >= nr_swapfiles) {
p->type = type;
@@ -1889,9 +1887,6 @@ static struct swap_info_struct *alloc_swap_info(void)
spin_unlock(&swap_lock);
return p;
-
-out:
- return ERR_PTR(error);
}
SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
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