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| author | Pavel Begunkov <asml.silence@gmail.com> | 2026-03-31 22:07:42 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-04-02 06:55:47 -0600 |
| commit | 7120b87bed922ae2f1968c081377162380e1547e (patch) | |
| tree | 3f9c46970503b0a367a593b085dd9e0e87f00a92 /io_uring | |
| parent | 52dcd1776bed614c6a270d9237df6105feab4c14 (diff) | |
| download | linux-next-7120b87bed922ae2f1968c081377162380e1547e.tar.gz linux-next-7120b87bed922ae2f1968c081377162380e1547e.zip | |
io_uring/zcrx: use dma_len for chunk size calculation
Buffers are now dma-mapped earlier and we can sg_dma_len(), otherwise,
since it's walking with for_each_sgtable_dma_sg(), it might wrongfully
reject some configurations. As a bonus, it'd now be able to use larger
chunks if dma addresses are coalesced e.g by iommu.
Fixes: 8c0cab0b7bf7 ("io_uring/zcrx: always dma map in advance")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://patch.msgid.link/03b219af3f6cfdd1cf64679b8bab7461e47cc123.1774780198.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/zcrx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c index d84ad40eae49..3bf800426fd2 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -63,7 +63,7 @@ static int io_area_max_shift(struct io_zcrx_mem *mem) unsigned i; for_each_sgtable_dma_sg(sgt, sg, i) - shift = min(shift, __ffs(sg->length)); + shift = min(shift, __ffs(sg_dma_len(sg))); return shift; } |