[PATCH] dcache changes for preparing for "export_operations" interface for nfsd to use.
Prepare for new export_operations interface (for filehandle lookup): - define d_splice_alias and d_alloc_anon. - define shrink_dcache_anon for removing anonymous dentries - modify d_move to work with anonymous dentries (IS_ROOT dentries) - modify d_find_alias to avoid anonymous dentries where possible as d_splice_alias and d_alloc_anon use this - put in place infrastructure for s_anon allocation and cleaning - replace a piece of code that is in nfsfh, reiserfs and fat with a call to d_alloc_anon - Rename DCACHE_NFSD_DISCONNECTED to DCACHE_DISCONNECTED - Add documentation at Documentation/filesystems/Exporting
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