public inbox for [email protected]
 help / color / mirror / Atom feed
From: Kanchan Joshi <[email protected]>
To: [email protected], [email protected], [email protected]
Cc: [email protected], [email protected],
	[email protected], [email protected],
	[email protected], Anuj Gupta <[email protected]>,
	Kanchan Joshi <[email protected]>
Subject: [PATCH for-next 1/4] io_uring: introduce io_uring_cmd_import_fixed
Date: Fri, 19 Aug 2022 16:00:18 +0530	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

From: Anuj Gupta <[email protected]>

This is a new helper that callers can use to obtain a bvec iterator for
the previously mapped buffer. This is preparatory work to enable
fixed-buffer support for io_uring_cmd.

Signed-off-by: Anuj Gupta <[email protected]>
Signed-off-by: Kanchan Joshi <[email protected]>
---
 include/linux/io_uring.h |  7 +++++++
 io_uring/uring_cmd.c     | 10 ++++++++++
 2 files changed, 17 insertions(+)

diff --git a/include/linux/io_uring.h b/include/linux/io_uring.h
index 58676c0a398f..60aba10468fc 100644
--- a/include/linux/io_uring.h
+++ b/include/linux/io_uring.h
@@ -32,6 +32,8 @@ struct io_uring_cmd {
 };
 
 #if defined(CONFIG_IO_URING)
+int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw,
+		struct iov_iter *iter, void *ioucmd)
 void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, ssize_t res2);
 void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd,
 			void (*task_work_cb)(struct io_uring_cmd *));
@@ -59,6 +61,11 @@ static inline void io_uring_free(struct task_struct *tsk)
 		__io_uring_free(tsk);
 }
 #else
+int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw,
+		struct iov_iter *iter, void *ioucmd)
+{
+	return -1;
+}
 static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret,
 		ssize_t ret2)
 {
diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c
index 8900856fa588..ff65cc8ab6cc 100644
--- a/io_uring/uring_cmd.c
+++ b/io_uring/uring_cmd.c
@@ -121,3 +121,13 @@ int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags)
 
 	return IOU_ISSUE_SKIP_COMPLETE;
 }
+
+int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len,
+		int rw, struct iov_iter *iter, void *ioucmd)
+{
+	struct io_kiocb *req = container_of(ioucmd, struct io_kiocb, uring_cmd);
+	struct io_mapped_ubuf *imu = req->imu;
+
+	return io_import_fixed(rw, iter, imu, ubuf, len);
+}
+EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed);
-- 
2.25.1


  parent reply	other threads:[~2022-08-19 10:40 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20220819104031epcas5p3d485526e1b2b42078ccce7e40a74b7f5@epcas5p3.samsung.com>
2022-08-19 10:30 ` [PATCH for-next 0/4] fixed-buffer for uring-cmd/passthrough Kanchan Joshi
     [not found]   ` <CGME20220819104036epcas5p2bb4d9b2cccbdfcdb460e085abe7fd1a8@epcas5p2.samsung.com>
2022-08-19 10:30     ` Kanchan Joshi [this message]
     [not found]   ` <CGME20220819104038epcas5p265c9385cfd9189d20ebfffeaa4d5efae@epcas5p2.samsung.com>
2022-08-19 10:30     ` [PATCH for-next 2/4] io_uring: introduce fixed buffer support for io_uring_cmd Kanchan Joshi
2022-08-22 10:58       ` Pavel Begunkov
2022-08-22 11:33         ` Kanchan Joshi
2022-08-25  9:34           ` Pavel Begunkov
2022-08-25 16:02             ` Kanchan Joshi
     [not found]   ` <CGME20220819104042epcas5p177f384cd4c15918f666c7eacc4dfab4c@epcas5p1.samsung.com>
2022-08-19 10:30     ` [PATCH for-next 3/4] block: add helper to map bvec iterator for passthrough Kanchan Joshi
     [not found]   ` <CGME20220819104045epcas5p117a9fcb0c3143e877e75e24ceba4f381@epcas5p1.samsung.com>
2022-08-19 10:30     ` [PATCH for-next 4/4] nvme: wire up fixed buffer support for nvme passthrough Kanchan Joshi

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    [email protected] \
    [email protected] \
    [email protected] \
    [email protected] \
    [email protected] \
    [email protected] \
    [email protected] \
    [email protected] \
    [email protected] \
    [email protected] \
    [email protected] \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox