diff options
| author | Christoph Hellwig <hch@infradead.org> | 2013-11-14 14:32:11 -0800 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-09-11 11:34:27 +0200 |
| commit | cb0f38652f775a21e09939cac3031ffe7417c563 (patch) | |
| tree | 5fb990c84140c198a5fda09a92839c284bba00f1 /lib/llist.c | |
| parent | cb2d35c2eb49fc70dd31c6c75184043c943f0e4d (diff) | |
llists: move llist_reverse_order from raid5 to llist.c
Make this useful helper available for other users.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Conflicts:
drivers/md/raid5.c
Change-Id: Ibfc31e7289ffe9bda511c88543bc2deb70a4691b
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
Diffstat (limited to 'lib/llist.c')
| -rw-r--r-- | lib/llist.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/llist.c b/lib/llist.c index 4a15115e9..36d657c0c 100644 --- a/lib/llist.c +++ b/lib/llist.c @@ -86,3 +86,25 @@ struct llist_node *llist_del_first(struct llist_head *head) return entry; } EXPORT_SYMBOL_GPL(llist_del_first); + +/** + * llist_reverse_order - reverse order of a llist chain + * @head: first item of the list to be reversed + * + * Reverse the oder of a chain of llist entries and return the + * new first entry. + */ +struct llist_node *llist_reverse_order(struct llist_node *head) +{ + struct llist_node *new_head = NULL; + + while (head) { + struct llist_node *tmp = head; + head = head->next; + tmp->next = new_head; + new_head = tmp; + } + + return new_head; +} +EXPORT_SYMBOL_GPL(llist_reverse_order); |