jfs: fix diAllocExt error in resizing filesystem

Resizing the filesystem would result in an diAllocExt error in some
instances because changes in bmp->db_agsize would not get noticed if
goto extendBmap was called.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: jfs-discussion@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org

diff --git a/fs/jfs/resize.c b/fs/jfs/resize.c
index 7f24a0bb08ca0a25d31352e9611273de87d2ee1b..1aba0039f1c995ab0909664cc325a917ee5d8c0b 100644 (file)
--- a/fs/jfs/resize.c
+++ b/fs/jfs/resize.c
@@ -81,6 +81,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
        struct inode *iplist[1];
        struct jfs_superblock *j_sb, *j_sb2;
        uint old_agsize;
+       int agsizechanged = 0;
        struct buffer_head *bh, *bh2;
 
        /* If the volume hasn't grown, get out now */
@@ -333,6 +334,9 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
         */
        if ((rc = dbExtendFS(ipbmap, XAddress, nblocks)))
                goto error_out;
+
+       agsizechanged |= (bmp->db_agsize != old_agsize);
+
        /*
         * the map now has extended to cover additional nblocks:
         * dn_mapsize = oldMapsize + nblocks;
@@ -432,7 +436,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
         * will correctly identify the new ag);
         */
        /* if new AG size the same as old AG size, done! */
-       if (bmp->db_agsize != old_agsize) {
+       if (agsizechanged) {
                if ((rc = diExtendFS(ipimap, ipbmap)))
                        goto error_out;