Commit 765ff496 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
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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: default avatarPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/c464ab5cab6e46a858c6d39c107e92b3b5291f13.1633373302.git.asml.silence@gmail.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent a33ae9ce

fs/io-wq.h

+0 −1
Original line number Diff line number Diff line
@@ -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,