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io_uring/rw: Allocate async data through helper

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This abstract away the cache details.

Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
Link: https://lore.kernel.org/r/20241216204615.759089-8-krisman@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Gabriel Krisman Bertazi 2024-12-16 15:46:13 -05:00 committed by Jens Axboe
parent 23d91035ca
commit 8cf0c45999
1 changed files with 16 additions and 20 deletions
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36
io_uring/rw.c
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@ -208,33 +208,29 @@ static void io_req_rw_cleanup(struct io_kiocb *req, unsigned int issue_flags)
}
}
static void io_rw_async_data_init(void *obj)
{
struct io_async_rw *rw = (struct io_async_rw *)obj;
rw->free_iovec = 0;
rw->bytes_done = 0;
}
static int io_rw_alloc_async(struct io_kiocb *req)
{
struct io_ring_ctx *ctx = req->ctx;
struct io_async_rw *rw;
rw = io_alloc_cache_get(&ctx->rw_cache);
if (rw) {
if (rw->free_iovec) {
kasan_mempool_unpoison_object(rw->free_iovec,
rw->free_iov_nr * sizeof(struct iovec));
req->flags |= REQ_F_NEED_CLEANUP;
}
req->flags |= REQ_F_ASYNC_DATA;
req->async_data = rw;
goto done;
}
if (!io_alloc_async_data(req)) {
rw = req->async_data;
rw->free_iovec = NULL;
rw->free_iov_nr = 0;
done:
rw = io_uring_alloc_async_data(&ctx->rw_cache, req, io_rw_async_data_init);
if (!rw)
return -ENOMEM;
if (rw->free_iovec) {
kasan_mempool_unpoison_object(rw->free_iovec,
rw->free_iov_nr * sizeof(struct iovec));
req->flags |= REQ_F_NEED_CLEANUP;
rw->bytes_done = 0;
return 0;
}
return -ENOMEM;
return 0;
}
static int io_prep_rw_setup(struct io_kiocb *req, int ddir, bool do_import)