From 765ff496c781a982ed0a882a7784c93ce10d1155 Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Mon, 4 Oct 2021 20:02:50 +0100 Subject: io_uring: optimise INIT_WQ_LIST The invariant of io_wq_work_list is that it's empty IFF ->first is NULL, so no need to initially set ->last. With now having more users of the list it may play a role, i.e. used in each tw iteration and on every completion flushing. Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/c464ab5cab6e46a858c6d39c107e92b3b5291f13.1633373302.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- fs/io-wq.h | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/io-wq.h b/fs/io-wq.h index 87ba6a733630..41bf37674a49 100644 --- a/fs/io-wq.h +++ b/fs/io-wq.h @@ -38,7 +38,6 @@ struct io_wq_work_list { #define wq_list_empty(list) (READ_ONCE((list)->first) == NULL) #define INIT_WQ_LIST(list) do { \ (list)->first = NULL; \ - (list)->last = NULL; \ } while (0) static inline void wq_list_add_after(struct io_wq_work_node *node, -- cgit