forked from luck/tmp_suning_uos_patched
fs: dcache documentation cleanup
Remove redundant (and incorrect, since dcache RCU lookup) dentry locking documentation and point to the canonical document. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
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@ -141,22 +141,16 @@ struct dentry_operations {
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char *(*d_dname)(struct dentry *, char *, int);
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};
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/* the dentry parameter passed to d_hash and d_compare is the parent
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/*
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* Locking rules for dentry_operations callbacks are to be found in
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* Documentation/filesystems/Locking. Keep it updated!
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*
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* the dentry parameter passed to d_hash and d_compare is the parent
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* directory of the entries to be compared. It is used in case these
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* functions need any directory specific information for determining
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* equivalency classes. Using the dentry itself might not work, as it
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* might be a negative dentry which has no information associated with
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* it */
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/*
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locking rules:
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big lock dcache_lock d_lock may block
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d_revalidate: no no no yes
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d_hash no no no yes
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d_compare: no yes yes no
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d_delete: no yes no no
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d_release: no no no yes
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d_iput: no no no yes
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* it.
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*/
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/* d_flags entries */
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