[Jfs-patches] [PATCH 2/3] jfs: Update agstart when resizing volume

[Dave K. <dav...@or...>]

A comment indicates that the IAG's agstart does not need to be updated
since it will always point to a block in the same aggregate group, but
jfs_fsck isn't so forgiving and reports it as an error.

I'm fixing this in jfsutils as well, so either a new kernel or new
utilities will be sufficient to fix the problem.

Signed-off-by: Dave Kleikamp <dav...@or...>
---
 fs/jfs/jfs_imap.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c
index ed53a47..0533e8f 100644
--- a/fs/jfs/jfs_imap.c
+++ b/fs/jfs/jfs_imap.c
@@ -2921,10 +2921,9 @@ int diExtendFS(struct inode *ipimap, struct inode *ipbmap)
 			continue;
 		}
 
-		/* agstart that computes to the same ag is treated as same; */
 		agstart = le64_to_cpu(iagp->agstart);
-		/* iagp->agstart = agstart & ~(mp->db_agsize - 1); */
 		n = agstart >> mp->db_agl2size;
+		iagp->agstart = cpu_to_le64((s64)n << mp->db_agl2size);
 
 		/* compute backed inodes */
 		numinos = (EXTSPERIAG - le32_to_cpu(iagp->nfreeexts))
-- 
1.7.5.2