d_backing_dentry(9) Get upper or lower dentry we should be using

SYNOPSIS

struct dentry * d_backing_dentry(struct dentry * upper);

ARGUMENTS

upper

The upper layer

DESCRIPTION

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.

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