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Bugzilla 215088 Fix deadlock in gfs2_change_nlink() while installing RHEL5 into GFS2 partition. The gfs2_rename() apparently needs block allocation for the new name (into the directory) where it requires rg locks. At the same time, while updating the nlink count for the replaced file, gfs2_change_nlink() tries to return the inode meta-data back to resource group where it needs rg locks too. Our logic doesn't allow process to acquire these locks recursively by the same process (RHEL installer) that results a BUG call. This only happens within rename code path and only if the destination file exists before the rename operation. Signed-off-by: S. Wendy Cheng <wcheng@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>