[RFC 10/12] io_uring: opcode independent fixed buf import
flat view
STALE1790d
SUPERSEDED
From: Pavel Begunkov <asml.silence@gmail.com>
Date: 2021-11-30 15:21:38
Also in:
io-uring, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Status: Superseded by v5 (posted 2022-07-12). [go to v5]
Revision rfc (4 revisions archived).
Revisions (4)
- rfc current
- v3 [diff against previous] re-posted go to this post
- v4 [diff against previous]
- v5 [diff against previous]
Extract an opcode independent helper from io_import_fixed for initialising an iov_iter with a fixed buffer with Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> --- fs/io_uring.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index e1360fde95d3..bb991f4cee7b 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c@@ -3152,11 +3152,11 @@ static void kiocb_done(struct io_kiocb *req, ssize_t ret, } } -static int __io_import_fixed(struct io_kiocb *req, int rw, struct iov_iter *iter, - struct io_mapped_ubuf *imu) +static int __io_import_fixed(int rw, struct iov_iter *iter, + struct io_mapped_ubuf *imu, + u64 buf_addr, size_t len) { - size_t len = req->rw.len; - u64 buf_end, buf_addr = req->rw.addr; + u64 buf_end; size_t offset; if (unlikely(check_add_overflow(buf_addr, (u64)len, &buf_end)))
@@ -3225,7 +3225,7 @@ static int io_import_fixed(struct io_kiocb *req, int rw, struct iov_iter *iter) imu = READ_ONCE(ctx->user_bufs[index]); req->imu = imu; } - return __io_import_fixed(req, rw, iter, imu); + return __io_import_fixed(rw, iter, imu, req->rw.addr, req->rw.len); } static void io_ring_submit_unlock(struct io_ring_ctx *ctx, bool needs_lock)
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2.34.0