From: Sidong Yang <[email protected]>
To: Josef Bacik <[email protected]>,
David Sterba <[email protected]>, Jens Axboe <[email protected]>,
Pavel Begunkov <[email protected]>
Cc: [email protected], [email protected],
[email protected], Sidong Yang <[email protected]>
Subject: [RFC PATCH v3 2/3] io-uring/cmd: introduce io_uring_cmd_import_fixed_vec
Date: Sat, 15 Mar 2025 17:23:18 +0000 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
io_uring_cmd_import_fixed_vec() could be used for using multiple
fixed buffer in uring_cmd callback.
Signed-off-by: Sidong Yang <[email protected]>
---
include/linux/io_uring/cmd.h | 14 ++++++++++++++
io_uring/uring_cmd.c | 19 +++++++++++++++++++
2 files changed, 33 insertions(+)
diff --git a/include/linux/io_uring/cmd.h b/include/linux/io_uring/cmd.h
index 74b9f0aec229..2c7ae8474a56 100644
--- a/include/linux/io_uring/cmd.h
+++ b/include/linux/io_uring/cmd.h
@@ -45,6 +45,12 @@ int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw,
struct io_uring_cmd *ioucmd,
unsigned int issue_flags);
+int io_uring_cmd_import_fixed_vec(struct io_uring_cmd *ioucmd,
+ const struct iovec __user *uvec,
+ unsigned long uvec_segs, int ddir,
+ unsigned int issue_flags,
+ struct iov_iter *iter);
+
/*
* Completes the request, i.e. posts an io_uring CQE and deallocates @ioucmd
* and the corresponding io_uring request.
@@ -77,6 +83,14 @@ io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw,
{
return -EOPNOTSUPP;
}
+int io_uring_cmd_import_fixed_vec(struct io_uring_cmd *ioucmd,
+ const struct iovec __user *uvec,
+ unsigned long uvec_segs, int ddir,
+ unsigned int issue_flags,
+ struct iov_iter *iter)
+{
+ return -EOPNOTSUPP;
+}
static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret,
u64 ret2, unsigned issue_flags)
{
diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c
index 315c603cfdd4..e2bf9edca9df 100644
--- a/io_uring/uring_cmd.c
+++ b/io_uring/uring_cmd.c
@@ -267,6 +267,25 @@ int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw,
}
EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed);
+int io_uring_cmd_import_fixed_vec(struct io_uring_cmd *ioucmd,
+ const struct iovec __user *uvec,
+ unsigned long uvec_segs, int ddir,
+ unsigned int issue_flags,
+ struct iov_iter *iter)
+{
+ struct io_kiocb *req = cmd_to_io_kiocb(ioucmd);
+ struct io_uring_cmd_data *cache = req->async_data;
+ int ret;
+
+ ret = io_prep_reg_iovec(req, &cache->iou_vec, uvec, uvec_segs);
+ if (ret)
+ return ret;
+
+ return io_import_reg_vec(ddir, iter, req, &cache->iou_vec,
+ cache->iou_vec.nr, issue_flags);
+}
+EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed_vec);
+
void io_uring_cmd_issue_blocking(struct io_uring_cmd *ioucmd)
{
struct io_kiocb *req = cmd_to_io_kiocb(ioucmd);
--
2.43.0
next prev parent reply other threads:[~2025-03-15 17:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-15 17:23 [RFC PATCH v3 0/3] introduce io_uring_cmd_import_fixed_vec Sidong Yang
2025-03-15 17:23 ` [RFC PATCH v3 1/3] io-uring/cmd: add iou_vec field for io_uring_cmd Sidong Yang
2025-03-16 7:24 ` Pavel Begunkov
2025-03-16 8:02 ` Sidong Yang
2025-03-16 8:49 ` Sidong Yang
2025-03-15 17:23 ` Sidong Yang [this message]
2025-03-15 17:23 ` [RFC PATCH v3 3/3] btrfs: ioctl: introduce btrfs_uring_import_iovec() Sidong Yang
2025-03-16 7:22 ` [RFC PATCH v3 0/3] introduce io_uring_cmd_import_fixed_vec Pavel Begunkov
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