Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
io_uring/rw: Allocate async data through helper
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>
authored by
Gabriel Krisman Bertazi
and committed by
Jens Axboe
d7f11616
f49a8537
+16
-20
+16
-20
io_uring/rw.c
+16
-20
io_uring/rw.c
···
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}
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}
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static void io_rw_async_data_init(void *obj)
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{
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struct io_async_rw *rw = (struct io_async_rw *)obj;
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rw->free_iovec = 0;
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rw->bytes_done = 0;
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}
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static int io_rw_alloc_async(struct io_kiocb *req)
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{
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struct io_ring_ctx *ctx = req->ctx;
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struct io_async_rw *rw;
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rw = io_alloc_cache_get(&ctx->rw_cache);
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if (rw) {
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if (rw->free_iovec) {
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kasan_mempool_unpoison_object(rw->free_iovec,
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rw->free_iov_nr * sizeof(struct iovec));
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req->flags |= REQ_F_NEED_CLEANUP;
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}
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req->flags |= REQ_F_ASYNC_DATA;
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req->async_data = rw;
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goto done;
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}
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if (!io_alloc_async_data(req)) {
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rw = req->async_data;
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rw->free_iovec = NULL;
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rw->free_iov_nr = 0;
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done:
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rw = io_uring_alloc_async_data(&ctx->rw_cache, req, io_rw_async_data_init);
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if (!rw)
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return -ENOMEM;
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if (rw->free_iovec) {
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kasan_mempool_unpoison_object(rw->free_iovec,
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rw->free_iov_nr * sizeof(struct iovec));
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req->flags |= REQ_F_NEED_CLEANUP;
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rw->bytes_done = 0;
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return 0;
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}
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-
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return -ENOMEM;
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return 0;
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}
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static int io_prep_rw_setup(struct io_kiocb *req, int ddir, bool do_import)