mirror of https://gitee.com/openkylin/linux.git
[PATCH] IB/mthca: allow unaligned memory regions
The first buffer of a memory region is not required to be page-aligned, so don't return an error if it's not. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <roland@topspin.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -494,7 +494,7 @@ static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
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mask = 0;
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total_size = 0;
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for (i = 0; i < num_phys_buf; ++i) {
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if (buffer_list[i].addr & ~PAGE_MASK)
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if (i != 0 && buffer_list[i].addr & ~PAGE_MASK)
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return ERR_PTR(-EINVAL);
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if (i != 0 && i != num_phys_buf - 1 &&
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(buffer_list[i].size & ~PAGE_MASK))
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