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| author | Pavel Begunkov <asml.silence@gmail.com> | 2023-04-04 15:39:47 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-04-04 18:30:39 +0300 |
| commit | 2ad4c6d08018e4eec130c29992028dc356ab2181 (patch) | |
| tree | 18a7b8f7784ca8928d2f1189c34e6a36907822ca /io_uring | |
| parent | 8e15c0e71b8ae64fb7163532860f8d608165281f (diff) | |
| download | linux-2ad4c6d08018e4eec130c29992028dc356ab2181.tar.xz | |
io_uring: don't put nodes under spinlocks
io_req_put_rsrc() doesn't need any locking, so move it out of
a spinlock section in __io_req_complete_post() and adjust helpers.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d5b87a5f31270dade6805f7acafc4cc34b84b241.1680576071.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/io_uring.c | 7 | ||||
| -rw-r--r-- | io_uring/rsrc.h | 6 |
2 files changed, 8 insertions, 5 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index a0b64831c455..596af20cddb4 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -970,6 +970,7 @@ bool io_aux_cqe(struct io_ring_ctx *ctx, bool defer, u64 user_data, s32 res, u32 static void __io_req_complete_post(struct io_kiocb *req) { struct io_ring_ctx *ctx = req->ctx; + struct io_rsrc_node *rsrc_node = NULL; io_cq_lock(ctx); if (!(req->flags & REQ_F_CQE_SKIP)) @@ -990,7 +991,7 @@ static void __io_req_complete_post(struct io_kiocb *req) } io_put_kbuf_comp(req); io_dismantle_req(req); - io_req_put_rsrc(req); + rsrc_node = req->rsrc_node; /* * Selected buffer deallocation in io_clean_op() assumes that * we don't hold ->completion_lock. Clean them here to avoid @@ -1001,6 +1002,8 @@ static void __io_req_complete_post(struct io_kiocb *req) ctx->locked_free_nr++; } io_cq_unlock_post(ctx); + + io_put_rsrc_node(rsrc_node); } void io_req_complete_post(struct io_kiocb *req, unsigned issue_flags) @@ -1117,7 +1120,7 @@ __cold void io_free_req(struct io_kiocb *req) { struct io_ring_ctx *ctx = req->ctx; - io_req_put_rsrc(req); + io_put_rsrc_node(req->rsrc_node); io_dismantle_req(req); io_put_task_remote(req->task, 1); diff --git a/io_uring/rsrc.h b/io_uring/rsrc.h index 950535e2b9f4..8164777279ba 100644 --- a/io_uring/rsrc.h +++ b/io_uring/rsrc.h @@ -115,10 +115,10 @@ static inline void io_rsrc_put_node(struct io_rsrc_node *node, int nr) io_rsrc_node_ref_zero(node); } -static inline void io_req_put_rsrc(struct io_kiocb *req) +static inline void io_put_rsrc_node(struct io_rsrc_node *node) { - if (req->rsrc_node) - io_rsrc_put_node(req->rsrc_node, 1); + if (node) + io_rsrc_put_node(node, 1); } static inline void io_req_put_rsrc_locked(struct io_kiocb *req, |