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authorPavel Begunkov <asml.silence@gmail.com>2021-10-04 20:02:50 +0100
committerJens Axboe <axboe@kernel.dk>2021-10-19 05:49:54 -0600
commit765ff496c781a982ed0a882a7784c93ce10d1155 (patch)
tree45aaee67b14fceecd955f2957252909dcf31dbc0 /fs/io-wq.h
parenta33ae9ce16a8ca62c5dffbe8909d185c6c5b4d77 (diff)
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 <asml.silence@gmail.com> Link: https://lore.kernel.org/r/c464ab5cab6e46a858c6d39c107e92b3b5291f13.1633373302.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io-wq.h')
-rw-r--r--fs/io-wq.h1
1 files changed, 0 insertions, 1 deletions
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,