From 5eef7fa905c814826f518aca2d414ca77508ce30 Mon Sep 17 00:00:00 2001
From: Nick Piggin <npiggin@kernel.dk>
Date: Fri, 7 Jan 2011 17:49:22 +1100
Subject: [PATCH] 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>
---
include/linux/dcache.h | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 6a4aea30aa09..fff975576b5b 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -141,22 +141,16 @@ struct dentry_operations {
char *(*d_dname)(struct dentry *, char *, int);
};
-/* the dentry parameter passed to d_hash and d_compare is the parent
+/*
+ * Locking rules for dentry_operations callbacks are to be found in
+ * Documentation/filesystems/Locking. Keep it updated!
+ *
+ * the dentry parameter passed to d_hash and d_compare is the parent
* directory of the entries to be compared. It is used in case these
* functions need any directory specific information for determining
* equivalency classes. Using the dentry itself might not work, as it
* might be a negative dentry which has no information associated with
- * it */
-
-/*
-locking rules:
- big lock dcache_lock d_lock may block
-d_revalidate: no no no yes
-d_hash no no no yes
-d_compare: no yes yes no
-d_delete: no yes no no
-d_release: no no no yes
-d_iput: no no no yes
+ * it.
*/
/* d_flags entries */
--
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