d_backing_dentry — Get upper or lower dentry we should be using


struct dentry * d_backing_dentry (struct dentry * upper);


struct dentry * upper

The upper layer


This is the helper that should be used to get the dentry of the inode that will be used if this dentry were opened as a file. It may be the upper dentry or it may be a lower dentry pinned by the upper.

Normal filesystems should not use this to access their own dentries.