* [PATCH 1/1] io_uring/zcrx: increment fallback loop src offset
@ 2025-10-08 12:39 Pavel Begunkov
2025-10-08 17:32 ` Jens Axboe
0 siblings, 1 reply; 2+ messages in thread
From: Pavel Begunkov @ 2025-10-08 12:39 UTC (permalink / raw)
To: io-uring; +Cc: asml.silence, axboe, netdev
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
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2025-10-08 17:32 ` Jens Axboe
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