diff options
| -rw-r--r-- | mm/swapfile.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index 6f25ece88c4..b261e55e0b8 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -1907,7 +1907,6 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) unsigned char *swap_map = NULL; struct page *page = NULL; struct inode *inode = NULL; - int did_down = 0; if (!capable(CAP_SYS_ADMIN)) return -EPERM; @@ -1962,7 +1961,6 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) } else if (S_ISREG(inode->i_mode)) { p->bdev = inode->i_sb->s_bdev; mutex_lock(&inode->i_mutex); - did_down = 1; if (IS_SWAPFILE(inode)) { error = -EBUSY; goto bad_swap; @@ -2154,10 +2152,8 @@ bad_swap_2: spin_unlock(&swap_lock); vfree(swap_map); if (swap_file) { - if (did_down) { + if (inode && S_ISREG(inode->i_mode)) mutex_unlock(&inode->i_mutex); - did_down = 0; - } filp_close(swap_file, NULL); } out: @@ -2167,7 +2163,7 @@ out: } if (name) putname(name); - if (did_down) { + if (inode && S_ISREG(inode->i_mode)) { if (!error) inode->i_flags |= S_SWAPFILE; mutex_unlock(&inode->i_mutex); |