Miklos Szeredi wrote:
I think it's wrong to unhash dentries while they are possibly still
being used. You can do the shrink_dcache_parent() here, but should
leave the unhashing to be done by prune_one_dentry(), after it's been
checked that there are no other users of the dentry.
d_invalidate() calls shrink_dcache_parent() as needed and will fail if
there are other users of the dentry.
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