On Tue, Oct 28, 2014 at 09:13:13PM +0000, Al Viro wrote: > Documentation is wildly over-optimistic. You are trying to use something > with non-trivial ->d_hash and ->d_compare as lower layer. > > What should happen if you ask to mount an image with joliet extensions and > ask to create foo.txt.... when foo.txt is there? From the isofs POV those > are the same; for overlayfs they are not (it's using default ->d_hash > and ->d_compare). > > We probably ought to split the normal (case-sensitive, no joliet shite) case > out and leave it with NULL ->s_d_op, but that'll need to be done carefully, > or isofs_cmp() will blow up on us.
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