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authorCesar Eduardo Barros <cesarb@cesarb.net>2011-03-22 16:33:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-22 17:44:07 -0700
commit87ade72a799a9a895b4a60918c32b43d3dfc3324 (patch)
tree3110f7526fc3581962232b39567fee2fb95c44aa /mm/swapfile.c
parent4d0e1e10752ca487d83d1ab2a1d4ae6d664e1cc0 (diff)
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sys_swapon: simplify error flow in claim_swapfile()
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/swapfile.c')
-rw-r--r--mm/swapfile.c20
1 files changed, 6 insertions, 14 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c
index fc687b2..61a604c 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1900,30 +1900,22 @@ static int claim_swapfile(struct swap_info_struct *p, struct inode *inode)
sys_swapon);
if (error < 0) {
p->bdev = NULL;
- error = -EINVAL;
- goto bad_swap;
+ return -EINVAL;
}
p->old_block_size = block_size(p->bdev);
error = set_blocksize(p->bdev, PAGE_SIZE);
if (error < 0)
- goto bad_swap;
+ return error;
p->flags |= SWP_BLKDEV;
} else if (S_ISREG(inode->i_mode)) {
p->bdev = inode->i_sb->s_bdev;
mutex_lock(&inode->i_mutex);
- if (IS_SWAPFILE(inode)) {
- error = -EBUSY;
- goto bad_swap;
- }
- } else {
- error = -EINVAL;
- goto bad_swap;
- }
+ if (IS_SWAPFILE(inode))
+ return -EBUSY;
+ } else
+ return -EINVAL;
return 0;
-
-bad_swap:
- return error;
}
SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)