From: Pavel Begunkov <[email protected]>
To: [email protected]
Cc: [email protected]
Subject: [PATCH 04/11] io_uring/memmap: flag regions with user pages
Date: Wed, 20 Nov 2024 23:33:27 +0000 [thread overview]
Message-ID: <0ff910962678b2b4d896d59f592d89181309e1b8.1732144783.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>
In preparation to kernel allocated regions add a flag telling if
the region contains user pinned pages or not.
Signed-off-by: Pavel Begunkov <[email protected]>
---
io_uring/memmap.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/io_uring/memmap.c b/io_uring/memmap.c
index 21353ea09b39..f76bee5a861a 100644
--- a/io_uring/memmap.c
+++ b/io_uring/memmap.c
@@ -197,12 +197,16 @@ void *__io_uaddr_map(struct page ***pages, unsigned short *npages,
enum {
IO_REGION_F_VMAP = 1,
+ IO_REGION_F_USER_PINNED = 2,
};
void io_free_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr)
{
if (mr->pages) {
- unpin_user_pages(mr->pages, mr->nr_pages);
+ if (mr->flags & IO_REGION_F_USER_PINNED)
+ unpin_user_pages(mr->pages, mr->nr_pages);
+ else
+ release_pages(mr->pages, mr->nr_pages);
kvfree(mr->pages);
}
if ((mr->flags & IO_REGION_F_VMAP) && mr->ptr)
@@ -259,7 +263,7 @@ int io_create_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr,
mr->pages = pages;
mr->ptr = vptr;
mr->nr_pages = nr_pages;
- mr->flags |= IO_REGION_F_VMAP;
+ mr->flags |= IO_REGION_F_VMAP | IO_REGION_F_USER_PINNED;
return 0;
out_free:
if (pages_accounted)
--
2.46.0
next prev parent reply other threads:[~2024-11-20 23:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-20 23:33 [PATCH 00/11] support kernel allocated regions Pavel Begunkov
2024-11-20 23:33 ` [PATCH 01/11] io_uring: rename ->resize_lock Pavel Begunkov
2024-11-20 23:33 ` [PATCH 02/11] io_uring/rsrc: export io_check_coalesce_buffer Pavel Begunkov
2024-11-20 23:33 ` [PATCH 03/11] io_uring/memmap: add internal region flags Pavel Begunkov
2024-11-20 23:33 ` Pavel Begunkov [this message]
2024-11-20 23:33 ` [PATCH 05/11] io_uring/memmap: account memory before pinning Pavel Begunkov
2024-11-20 23:33 ` [PATCH 06/11] io_uring/memmap: reuse io_free_region for failure path Pavel Begunkov
2024-11-20 23:33 ` [PATCH 07/11] io_uring/memmap: optimise single folio regions Pavel Begunkov
2024-11-20 23:33 ` [PATCH 08/11] io_uring/memmap: helper for pinning region pages Pavel Begunkov
2024-11-20 23:33 ` [PATCH 09/11] io_uring/memmap: add IO_REGION_F_SINGLE_REF Pavel Begunkov
2024-11-20 23:33 ` [PATCH 10/11] io_uring/memmap: implement kernel allocated regions Pavel Begunkov
2024-11-20 23:33 ` [PATCH 11/11] io_uring/memmap: implement mmap for regions Pavel Begunkov
2024-11-21 1:28 ` [PATCH 00/11] support kernel allocated regions Jens Axboe
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 \
--in-reply-to=0ff910962678b2b4d896d59f592d89181309e1b8.1732144783.git.asml.silence@gmail.com \
[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