JFS: Check for invalid inodes in jfs_delete_inode

Some error paths may iput an invalid inode with i_nlink=0.  jfs should
not try to actually delete such an inode.

Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index 2137138c59b0..767c7ecb429e 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -128,6 +128,10 @@ void jfs_delete_inode(struct inode *inode)
 {
         jfs_info("In jfs_delete_inode, inode = 0x%p", inode);
 
+        if (is_bad_inode(inode) ||
+            (JFS_IP(inode)->fileset != cpu_to_le32(FILESYSTEM_I)))
+                        return;
+
         if (test_cflag(COMMIT_Freewmap, inode))
                 jfs_free_zero_link(inode);