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ocfs2: Fix system inodes cache overflow.

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When we store system inodes cache in ocfs2_super,
we use a array for global system inodes. But unfortunately,
the range is calculated wrongly which makes it overflow and
pollute ocfs2_super->local_system_inodes.
This patch fix it by setting the range properly.

The corresponding bug is ossbug1303.
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1303

Cc: stable@kernel.org
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Tao Ma 2010-12-22 17:50:30 +08:00 committed by Joel Becker
parent 8ac33dc86d
commit 7d8f98769e
1 changed files with 1 additions and 1 deletions
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2
fs/ocfs2/ocfs2_fs.h
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@ -350,7 +350,7 @@ enum {
#define OCFS2_LAST_LOCAL_SYSTEM_INODE LOCAL_GROUP_QUOTA_SYSTEM_INODE
NUM_SYSTEM_INODES
};
#define NUM_GLOBAL_SYSTEM_INODES OCFS2_LAST_GLOBAL_SYSTEM_INODE
#define NUM_GLOBAL_SYSTEM_INODES OCFS2_FIRST_LOCAL_SYSTEM_INODE
#define NUM_LOCAL_SYSTEM_INODES \
(NUM_SYSTEM_INODES - OCFS2_FIRST_LOCAL_SYSTEM_INODE)