tree fd579007adad2959affe07da1770c588b204f548
parent b42db0860e13067fcc7cbfba3966c9e652668bbc
author Eric Sandeen <sandeen@redhat.com> 1523945247 -0700
committer Darrick J. Wong <darrick.wong@oracle.com> 1524010217 -0700

xfs: set format back to extents if xfs_bmap_extents_to_btree

If xfs_bmap_extents_to_btree fails in a mode where we call
xfs_iroot_realloc(-1) to de-allocate the root, set the
format back to extents.

Otherwise we can assume we can dereference ifp->if_broot
based on the XFS_DINODE_FMT_BTREE format, and crash.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199423
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>