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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-06-20 03:25:58 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-07-25 03:39:15 +0300 |
| commit | f337a84d39527a2c46b1230470748d7bd0672ce0 (patch) | |
| tree | 6f6d828aa5d8664cff45a1145e10c739c999228e /io_uring/rw.c | |
| parent | 46929b086886ade8302cff6e85ccea66bce0cf98 (diff) | |
| download | linux-f337a84d39527a2c46b1230470748d7bd0672ce0.tar.xz | |
io_uring: opcode independent fixed buf import
Fixed buffers are generic infrastructure, make io_import_fixed() opcode
agnostic.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/b1e765c8a1c2c913a05a28d2399fc53e1d3cf37a.1655684496.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/rw.c')
| -rw-r--r-- | io_uring/rw.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c index 0028e95e6633..ded8ef01165c 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -273,14 +273,15 @@ static int kiocb_done(struct io_kiocb *req, ssize_t ret, return IOU_ISSUE_SKIP_COMPLETE; } -static int __io_import_fixed(struct io_kiocb *req, int ddir, - struct iov_iter *iter, struct io_mapped_ubuf *imu) +static int io_import_fixed(int ddir, struct iov_iter *iter, + struct io_mapped_ubuf *imu, + u64 buf_addr, size_t len) { - struct io_rw *rw = io_kiocb_to_cmd(req); - size_t len = rw->len; - u64 buf_end, buf_addr = rw->addr; + u64 buf_end; size_t offset; + if (WARN_ON_ONCE(!imu)) + return -EFAULT; if (unlikely(check_add_overflow(buf_addr, (u64)len, &buf_end))) return -EFAULT; /* not inside the mapped region */ @@ -332,14 +333,6 @@ static int __io_import_fixed(struct io_kiocb *req, int ddir, return 0; } -static int io_import_fixed(struct io_kiocb *req, int rw, struct iov_iter *iter, - unsigned int issue_flags) -{ - if (WARN_ON_ONCE(!req->imu)) - return -EFAULT; - return __io_import_fixed(req, rw, iter, req->imu); -} - #ifdef CONFIG_COMPAT static ssize_t io_compat_import(struct io_kiocb *req, struct iovec *iov, unsigned int issue_flags) @@ -426,7 +419,7 @@ static struct iovec *__io_import_iovec(int ddir, struct io_kiocb *req, ssize_t ret; if (opcode == IORING_OP_READ_FIXED || opcode == IORING_OP_WRITE_FIXED) { - ret = io_import_fixed(req, ddir, iter, issue_flags); + ret = io_import_fixed(ddir, iter, req->imu, rw->addr, rw->len); if (ret) return ERR_PTR(ret); return NULL; |