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| author | Jens Axboe <axboe@kernel.dk> | 2025-08-22 08:19:56 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-08-27 11:24:25 -0600 |
| commit | 4c0b26e23c79ecf934a92b2d9a516bffbb61c3e4 (patch) | |
| tree | b7902b44c0e98b37062e50db2012a703dd9bb241 /io_uring/uring_cmd.c | |
| parent | io_uring/zcrx: add support for IORING_SETUP_CQE_MIXED (diff) | |
| download | linux-4c0b26e23c79ecf934a92b2d9a516bffbb61c3e4.tar.gz linux-4c0b26e23c79ecf934a92b2d9a516bffbb61c3e4.zip | |
io_uring: add async data clear/free helpers
Futex recently had an issue where it mishandled how ->async_data and
REQ_F_ASYNC_DATA is handled. To avoid future issues like that, add a set
of helpers that either clear or clear-and-free the async data assigned
to a struct io_kiocb.
Convert existing manual handling of that to use the helpers. No intended
functional changes in this patch.
Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/uring_cmd.c')
| -rw-r--r-- | io_uring/uring_cmd.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c index ff1d029633b8..f5a2642bb407 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -37,8 +37,7 @@ static void io_req_uring_cleanup(struct io_kiocb *req, unsigned int issue_flags) if (io_alloc_cache_put(&req->ctx->cmd_cache, ac)) { ioucmd->sqe = NULL; - req->async_data = NULL; - req->flags &= ~(REQ_F_ASYNC_DATA|REQ_F_NEED_CLEANUP); + io_req_async_data_clear(req, REQ_F_NEED_CLEANUP); } } |