linux-kernel - [PATCH 2/6] rhashtable: remove outdated comments about grow

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Message-ID: <152210718423.11435.12622499872176836575.stgit@noble>
Date:   Tue, 27 Mar 2018 10:33:04 +1100
From:   NeilBrown <neilb@...e.com>
To:     Thomas Graf <tgraf@...g.ch>,
        Herbert Xu <herbert@...dor.apana.org.au>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/6] rhashtable: remove outdated comments about
 grow_decision etc

grow_decision and shink_decision no longer exist, so remove
the remaining references to them.

Signed-off-by: NeilBrown <neilb@...e.com>
---
 include/linux/rhashtable.h |   33 ++++++++++++++-------------------
 1 file changed, 14 insertions(+), 19 deletions(-)

diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h
index c9df2527e0cd..3bd19d29f46b 100644
--- a/include/linux/rhashtable.h
+++ b/include/linux/rhashtable.h
@@ -834,9 +834,8 @@ static inline void *__rhashtable_insert_fast(
  *
  * It is safe to call this function from atomic context.
  *
- * Will trigger an automatic deferred table resizing if the size grows
- * beyond the watermark indicated by grow_decision() which can be passed
- * to rhashtable_init().
+ * Will trigger an automatic deferred table resizing if residency in the
+ * table grows beyond 70%.
  */
 static inline int rhashtable_insert_fast(
 	struct rhashtable *ht, struct rhash_head *obj,
@@ -864,9 +863,8 @@ static inline int rhashtable_insert_fast(
  *
  * It is safe to call this function from atomic context.
  *
- * Will trigger an automatic deferred table resizing if the size grows
- * beyond the watermark indicated by grow_decision() which can be passed
- * to rhashtable_init().
+ * Will trigger an automatic deferred table resizing if residency in the
+ * table grows beyond 70%.
  */
 static inline int rhltable_insert_key(
 	struct rhltable *hlt, const void *key, struct rhlist_head *list,
@@ -888,9 +886,8 @@ static inline int rhltable_insert_key(
  *
  * It is safe to call this function from atomic context.
  *
- * Will trigger an automatic deferred table resizing if the size grows
- * beyond the watermark indicated by grow_decision() which can be passed
- * to rhashtable_init().
+ * Will trigger an automatic deferred table resizing if residency in the
+ * table grows beyond 70%.
  */
 static inline int rhltable_insert(
 	struct rhltable *hlt, struct rhlist_head *list,
@@ -920,9 +917,8 @@ static inline int rhltable_insert(
  *
  * It is safe to call this function from atomic context.
  *
- * Will trigger an automatic deferred table resizing if the size grows
- * beyond the watermark indicated by grow_decision() which can be passed
- * to rhashtable_init().
+ * Will trigger an automatic deferred table resizing if residency in the
+ * table grows beyond 70%.
  */
 static inline int rhashtable_lookup_insert_fast(
 	struct rhashtable *ht, struct rhash_head *obj,
@@ -979,9 +975,8 @@ static inline void *rhashtable_lookup_get_insert_fast(
  *
  * Lookups may occur in parallel with hashtable mutations and resizing.
  *
- * Will trigger an automatic deferred table resizing if the size grows
- * beyond the watermark indicated by grow_decision() which can be passed
- * to rhashtable_init().
+ * Will trigger an automatic deferred table resizing if residency in the
+ * table grows beyond 70%.
  *
  * Returns zero on success.
  */
@@ -1132,8 +1127,8 @@ static inline int __rhashtable_remove_fast(
  * walk the bucket chain upon removal. The removal operation is thus
  * considerable slow if the hash table is not correctly sized.
  *
- * Will automatically shrink the table via rhashtable_expand() if the
- * shrink_decision function specified at rhashtable_init() returns true.
+ * Will automatically shrink the table if permitted when residency drops
+ * below 30%.
  *
  * Returns zero on success, -ENOENT if the entry could not be found.
  */
@@ -1154,8 +1149,8 @@ static inline int rhashtable_remove_fast(
  * walk the bucket chain upon removal. The removal operation is thus
  * considerable slow if the hash table is not correctly sized.
  *
- * Will automatically shrink the table via rhashtable_expand() if the
- * shrink_decision function specified at rhashtable_init() returns true.
+ * Will automatically shrink the table if permitted when residency drops
+ * below 30%
  *
  * Returns zero on success, -ENOENT if the entry could not be found.
  */