Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

[firefly-linux-kernel-4.4.55.git] / fs / xfs / xfs_btree.c

diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c
index 8804b8a3c310a6866b5e37de3b7b555ebd96568d..0903960410a255c171a7b663ffb3ba4af9137074 100644 (file)
--- a/fs/xfs/xfs_btree.c
+++ b/fs/xfs/xfs_btree.c
@@ -2544,7 +2544,17 @@ xfs_btree_new_iroot(
        if (error)
                goto error0;
 
+       /*
+        * we can't just memcpy() the root in for CRC enabled btree blocks.
+        * In that case have to also ensure the blkno remains correct
+        */
        memcpy(cblock, block, xfs_btree_block_len(cur));
+       if (cur->bc_flags & XFS_BTREE_CRC_BLOCKS) {
+               if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
+                       cblock->bb_u.l.bb_blkno = cpu_to_be64(cbp->b_bn);
+               else
+                       cblock->bb_u.s.bb_blkno = cpu_to_be64(cbp->b_bn);
+       }
 
        be16_add_cpu(&block->bb_level, 1);
        xfs_btree_set_numrecs(block, 1);