+ ocfs2-solve-a-problem-of-crossing-the-boundary-in-updating-backups.patch added to -mm tree

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The patch titled
     Subject: ocfs2: solve a problem of crossing the boundary in updating backups
has been added to the -mm tree.  Its filename is
     ocfs2-solve-a-problem-of-crossing-the-boundary-in-updating-backups.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/ocfs2-solve-a-problem-of-crossing-the-boundary-in-updating-backups.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/ocfs2-solve-a-problem-of-crossing-the-boundary-in-updating-backups.patch

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------------------------------------------------------
From: jiangyiwen <jiangyiwen@xxxxxxxxxx>
Subject: ocfs2: solve a problem of crossing the boundary in updating backups

In update_backups() there exists a problem of crossing the boundary
as follows:

we assume that lun will be resized to 1TB(cluster_size is 32kb),
it will include 0~33554431 cluster, in update_backups func,
it will backup super block in location of 1TB which is the 33554432th
cluster, so the phenomenon of crossing the boundary happens.

Signed-off-by: Yiwen Jiang <jiangyiwen@xxxxxxxxxx>
Cc: Joseph Qi <joseph.qi@xxxxxxxxxx>
Cc: Xue jiufei <xuejiufei@xxxxxxxxxx>
Cc: Mark Fasheh <mfasheh@xxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 fs/ocfs2/resize.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN fs/ocfs2/resize.c~ocfs2-solve-a-problem-of-crossing-the-boundary-in-updating-backups fs/ocfs2/resize.c
--- a/fs/ocfs2/resize.c~ocfs2-solve-a-problem-of-crossing-the-boundary-in-updating-backups
+++ a/fs/ocfs2/resize.c
@@ -187,7 +187,7 @@ static int update_backups(struct inode *
 	for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
 		blkno = ocfs2_backup_super_blkno(inode->i_sb, i);
 		cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
-		if (cluster > clusters)
+		if (cluster >= clusters)
 			break;
 
 		ret = ocfs2_read_blocks_sync(osb, blkno, 1, &backup);
_

Patches currently in -mm which might be from jiangyiwen@xxxxxxxxxx are

ocfs2-fill-in-the-unused-portion-of-the-block-with-zeros-by-dio_zero_block.patch
ocfs2-avoid-occurring-deadlock-by-changing-ocfs2_wq-from-global-to-local.patch
ocfs2-solve-a-problem-of-crossing-the-boundary-in-updating-backups.patch

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