list: change list_for_each_entry*() to use list_*_entry()

Now that we have list_{next,prev}_entry() we can change
list_for_each_entry*() and list_safe_reset_next() to use the new helpers
to improve the readability.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/list.h b/include/linux/list.h
index 2ece638..c88a591 100644 (file)
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -433,8 +433,8 @@ static inline void list_splice_tail_init(struct list_head *list,
  */
 #define list_for_each_entry(pos, head, member)                         \
        for (pos = list_entry((head)->next, typeof(*pos), member);      \
-            &pos->member != (head);    \
-            pos = list_entry(pos->member.next, typeof(*pos), member))
+            &pos->member != (head);                                    \
+            pos = list_next_entry(pos, member))
 
 /**
  * list_for_each_entry_reverse - iterate backwards over list of given type.
@@ -444,8 +444,8 @@ static inline void list_splice_tail_init(struct list_head *list,
  */
 #define list_for_each_entry_reverse(pos, head, member)                 \
        for (pos = list_entry((head)->prev, typeof(*pos), member);      \
-            &pos->member != (head);    \
-            pos = list_entry(pos->member.prev, typeof(*pos), member))
+            &pos->member != (head);                                    \
+            pos = list_prev_entry(pos, member))
 
 /**
  * list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue()
@@ -468,9 +468,9 @@ static inline void list_splice_tail_init(struct list_head *list,
  * the current position.
  */
 #define list_for_each_entry_continue(pos, head, member)                \
-       for (pos = list_entry(pos->member.next, typeof(*pos), member);  \
-            &pos->member != (head);    \
-            pos = list_entry(pos->member.next, typeof(*pos), member))
+       for (pos = list_next_entry(pos, member);                        \
+            &pos->member != (head);                                    \
+            pos = list_next_entry(pos, member))
 
 /**
  * list_for_each_entry_continue_reverse - iterate backwards from the given point
@@ -482,9 +482,9 @@ static inline void list_splice_tail_init(struct list_head *list,
  * the current position.
  */
 #define list_for_each_entry_continue_reverse(pos, head, member)                \
-       for (pos = list_entry(pos->member.prev, typeof(*pos), member);  \
-            &pos->member != (head);    \
-            pos = list_entry(pos->member.prev, typeof(*pos), member))
+       for (pos = list_prev_entry(pos, member);                        \
+            &pos->member != (head);                                    \
+            pos = list_prev_entry(pos, member))
 
 /**
  * list_for_each_entry_from - iterate over list of given type from the current point
@@ -495,8 +495,8 @@ static inline void list_splice_tail_init(struct list_head *list,
  * Iterate over list of given type, continuing from current position.
  */
 #define list_for_each_entry_from(pos, head, member)                    \
-       for (; &pos->member != (head);  \
-            pos = list_entry(pos->member.next, typeof(*pos), member))
+       for (; &pos->member != (head);                                  \
+            pos = list_next_entry(pos, member))
 
 /**
  * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
@@ -507,9 +507,9 @@ static inline void list_splice_tail_init(struct list_head *list,
  */
 #define list_for_each_entry_safe(pos, n, head, member)                 \
        for (pos = list_entry((head)->next, typeof(*pos), member),      \
-               n = list_entry(pos->member.next, typeof(*pos), member); \
+               n = list_next_entry(pos, member);                       \
             &pos->member != (head);                                    \
-            pos = n, n = list_entry(n->member.next, typeof(*n), member))
+            pos = n, n = list_next_entry(n, member))
 
 /**
  * list_for_each_entry_safe_continue - continue list iteration safe against removal
@@ -522,10 +522,10 @@ static inline void list_splice_tail_init(struct list_head *list,
  * safe against removal of list entry.
  */
 #define list_for_each_entry_safe_continue(pos, n, head, member)                \
-       for (pos = list_entry(pos->member.next, typeof(*pos), member),          \
-               n = list_entry(pos->member.next, typeof(*pos), member);         \
+       for (pos = list_next_entry(pos, member),                                \
+               n = list_next_entry(pos, member);                               \
             &pos->member != (head);                                            \
-            pos = n, n = list_entry(n->member.next, typeof(*n), member))
+            pos = n, n = list_next_entry(n, member))
 
 /**
  * list_for_each_entry_safe_from - iterate over list from current point safe against removal
@@ -538,9 +538,9 @@ static inline void list_splice_tail_init(struct list_head *list,
  * removal of list entry.
  */
 #define list_for_each_entry_safe_from(pos, n, head, member)                    \
-       for (n = list_entry(pos->member.next, typeof(*pos), member);            \
+       for (n = list_next_entry(pos, member);                                  \
             &pos->member != (head);                                            \
-            pos = n, n = list_entry(n->member.next, typeof(*n), member))
+            pos = n, n = list_next_entry(n, member))
 
 /**
  * list_for_each_entry_safe_reverse - iterate backwards over list safe against removal
@@ -554,9 +554,9 @@ static inline void list_splice_tail_init(struct list_head *list,
  */
 #define list_for_each_entry_safe_reverse(pos, n, head, member)         \
        for (pos = list_entry((head)->prev, typeof(*pos), member),      \
-               n = list_entry(pos->member.prev, typeof(*pos), member); \
+               n = list_prev_entry(pos, member);                       \
             &pos->member != (head);                                    \
-            pos = n, n = list_entry(n->member.prev, typeof(*n), member))
+            pos = n, n = list_prev_entry(n, member))
 
 /**
  * list_safe_reset_next - reset a stale list_for_each_entry_safe loop
@@ -571,7 +571,7 @@ static inline void list_splice_tail_init(struct list_head *list,
  * completing the current iteration of the loop body.
  */
 #define list_safe_reset_next(pos, n, member)                           \
-       n = list_entry(pos->member.next, typeof(*pos), member)
+       n = list_next_entry(pos, member)
 
 /*
  * Double linked lists with a single pointer list head.