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Commit ce3dd395 authored by Jarek Poplawski's avatar Jarek Poplawski Committed by David S. Miller
Browse files

net: Fix page seeking for skb_splice_bits(). 



struct page walking should be done with proper accessor functions, not
directly.

With doubts from David S. Miller and Herbert Xu.

Signed-off-by: default avatarJarek Poplawski <jarkao2@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 51621fbd

net/core/skbuff.c

+6 −1
Original line number Diff line number Diff line
@@ -1412,8 +1412,13 @@ static inline int spd_fill_page(struct splice_pipe_desc *spd, struct page *page, 
static inline void __segment_seek(struct page **page, unsigned int *poff,

				  unsigned int *plen, unsigned int off)

{

	unsigned long n;



	*poff += off;

	*page += *poff / PAGE_SIZE;

	n = *poff / PAGE_SIZE;

	if (n)

		*page = nth_page(*page, n);



	*poff = *poff % PAGE_SIZE;

	*plen -= off;

}