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Diffstat (limited to 'mm/swapfile.c')
-rw-r--r--mm/swapfile.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 4d11f9d8466..39aa9d12961 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -428,14 +428,16 @@ int swap_type_of(dev_t device)
{
int i;
- if (!device)
- return -EINVAL;
spin_lock(&swap_lock);
for (i = 0; i < nr_swapfiles; i++) {
struct inode *inode;
if (!(swap_info[i].flags & SWP_WRITEOK))
continue;
+ if (!device) {
+ spin_unlock(&swap_lock);
+ return i;
+ }
inode = swap_info->swap_file->f_dentry->d_inode;
if (S_ISBLK(inode->i_mode) &&
device == MKDEV(imajor(inode), iminor(inode))) {