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net/xdp: use shift instead of 64 bit division

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64bit division is kind of expensive, and shift should do the job here.

Signed-off-by: Pavel Machek (CIP) <pavel@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Machek 2020-06-04 23:42:59 +02:00 committed by David S. Miller
parent a624a86510
commit 7d877c35ca
1 changed files with 1 additions and 1 deletions
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2
net/xdp/xdp_umem.c
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@ -336,7 +336,7 @@ static int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr)
if ((addr + size) < addr) if ((addr + size) < addr)
return -EINVAL; return -EINVAL;
npgs = div_u64(size, PAGE_SIZE); npgs = size >> PAGE_SHIFT;
if (npgs > U32_MAX) if (npgs > U32_MAX)
return -EINVAL; return -EINVAL;