JFS: kernel BUG at fs/jfs/jfs_txnmgr.c:859

add_missing_indices() must set tlck->type to tlckBTROOT when modifying
a root btree root to avoid a trap in txRelease()

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

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c
index ac41f72d6d50..8676aee3ae48 100644
--- a/fs/jfs/jfs_dtree.c
+++ b/fs/jfs/jfs_dtree.c
@@ -2931,6 +2931,9 @@ static void add_missing_indices(struct inode *inode, s64 bn)
         ASSERT(p->header.flag & BT_LEAF);
 
         tlck = txLock(tid, inode, mp, tlckDTREE | tlckENTRY);
+        if (BT_IS_ROOT(mp))
+                tlck->type |= tlckBTROOT;
+
         dtlck = (struct dt_lock *) &tlck->lock;
 
         stbl = DT_GETSTBL(p);