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| author | Jens Axboe <axboe@kernel.dk> | 2024-08-08 18:42:18 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-08-25 16:27:01 +0200 |
| commit | 566a424212d79b90e3a8fe6b5c7bd8f69174105c (patch) | |
| tree | ad85e3e189a0d5bc6d24f3534fc3c8368bf8a4e0 /io_uring/net.c | |
| parent | io_uring/kbuf: use 'bl' directly rather than req->buf_list (diff) | |
| download | linux-566a424212d79b90e3a8fe6b5c7bd8f69174105c.tar.xz linux-566a424212d79b90e3a8fe6b5c7bd8f69174105c.zip | |
io_uring/net: use ITER_UBUF for single segment send maps
Just like what is being done on the recv side, if we only map a single
segment, then use ITER_UBUF for mapping it. That's more efficient than
using an ITER_IOVEC.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/net.c')
| -rw-r--r-- | io_uring/net.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/io_uring/net.c b/io_uring/net.c index d08abcca89cc..dc83a35b8af4 100644 --- a/io_uring/net.c +++ b/io_uring/net.c @@ -618,14 +618,23 @@ retry_bundle: if (unlikely(ret < 0)) return ret; - sr->len = arg.out_len; - iov_iter_init(&kmsg->msg.msg_iter, ITER_SOURCE, arg.iovs, ret, - arg.out_len); if (arg.iovs != &kmsg->fast_iov && arg.iovs != kmsg->free_iov) { kmsg->free_iov_nr = ret; kmsg->free_iov = arg.iovs; req->flags |= REQ_F_NEED_CLEANUP; } + sr->len = arg.out_len; + + if (ret == 1) { + sr->buf = arg.iovs[0].iov_base; + ret = import_ubuf(ITER_SOURCE, sr->buf, sr->len, + &kmsg->msg.msg_iter); + if (unlikely(ret)) + return ret; + } else { + iov_iter_init(&kmsg->msg.msg_iter, ITER_SOURCE, + arg.iovs, ret, arg.out_len); + } } /* |