From: Pavel Begunkov <asml.silence@gmail.com>
To: io-uring@vger.kernel.org
Cc: asml.silence@gmail.com, axboe@kernel.dk, netdev@vger.kernel.org
Subject: [PATCH 1/1] io_uring/zcrx: increment fallback loop src offset
Date: Wed, 8 Oct 2025 13:39:01 +0100 [thread overview]
Message-ID: <1b3a55134d4a9a39acab74b8566bf99864393efc.1759914262.git.asml.silence@gmail.com> (raw)
Don't forget to adjust the source offset in io_copy_page(), otherwise
it'll be copying into the same location in some cases for highmem
setups.
Fixes: e67645bb7f3f4 ("io_uring/zcrx: prepare fallback for larger pages")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
io_uring/zcrx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
index eb023c4bc0ff..0a43acbdef98 100644
--- a/io_uring/zcrx.c
+++ b/io_uring/zcrx.c
@@ -1079,6 +1079,7 @@ static ssize_t io_copy_page(struct io_copy_cache *cc, struct page *src_page,
cc->size -= n;
cc->offset += n;
+ src_offset += n;
len -= n;
copied += n;
}
--
2.49.0
next reply other threads:[~2025-10-08 12:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-08 12:39 Pavel Begunkov [this message]
2025-10-08 17:32 ` [PATCH 1/1] io_uring/zcrx: increment fallback loop src offset Jens Axboe
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