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| author | Pavel Begunkov <asml.silence@gmail.com> | 2021-02-10 00:03:12 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-02-10 07:28:43 -0700 |
| commit | 5087275dba02943179720bd95d1d6c7047007550 (patch) | |
| tree | cf6b621d5c8eb5af58994e96edc89b1a8016b52a /fs/io_uring.c | |
| parent | ba88ff112bdfde8103a8143f867bcdc46bc0e50f (diff) | |
| download | linux-stable-5087275dba02943179720bd95d1d6c7047007550.tar.gz linux-stable-5087275dba02943179720bd95d1d6c7047007550.tar.bz2 linux-stable-5087275dba02943179720bd95d1d6c7047007550.zip | |
io_uring: don't reinit submit state every time
As now submit_state is retained across syscalls, we can save ourself
from initialising it from ground up for each io_submit_sqes(). Set some
fields during ctx allocation, and just keep them always consistent.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
[axboe: remove unnecessary zeroing of ctx members]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 6e800f9df292..6bce9094280c 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1345,6 +1345,7 @@ static struct io_ring_ctx *io_ring_ctx_alloc(struct io_uring_params *p) INIT_LIST_HEAD(&ctx->rsrc_ref_list); INIT_DELAYED_WORK(&ctx->rsrc_put_work, io_rsrc_put_work); init_llist_head(&ctx->rsrc_put_llist); + INIT_LIST_HEAD(&submit_state->comp.list); return ctx; err: if (ctx->fallback_req) @@ -6661,8 +6662,10 @@ static void io_submit_state_end(struct io_submit_state *state, if (state->plug_started) blk_finish_plug(&state->plug); io_state_file_put(state); - if (state->free_reqs) + if (state->free_reqs) { kmem_cache_free_bulk(req_cachep, state->free_reqs, state->reqs); + state->free_reqs = 0; + } } /* @@ -6672,10 +6675,6 @@ static void io_submit_state_start(struct io_submit_state *state, unsigned int max_ios) { state->plug_started = false; - state->comp.nr = 0; - INIT_LIST_HEAD(&state->comp.list); - state->free_reqs = 0; - state->file_refs = 0; state->ios_left = max_ios; } |