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Date: Tue, 23 Oct 2007 07:13:16 +0200 From: Heiko Carstens <heiko.carstens@...ibm.com> To: Jens Axboe <jens.axboe@...cle.com> Cc: torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org, mingo@...e.hu, Martin Schwidefsky <schwidefsky@...ibm.com>, linux-s390@...r.kernel.org Subject: Re: [PATCH 02/10] [SG] Update block layer to use sg helpers On Mon, Oct 22, 2007 at 08:10:56PM +0200, Jens Axboe wrote: > Signed-off-by: Jens Axboe <jens.axboe@...cle.com> > --- > block/ll_rw_blk.c | 8 ++++++-- > 1 files changed, 6 insertions(+), 2 deletions(-) > > diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c > index 8025d64..61c2e39 100644 > --- a/block/ll_rw_blk.c > +++ b/block/ll_rw_blk.c > @@ -1354,8 +1354,9 @@ new_segment: > else > sg = sg_next(sg); > > - memset(sg, 0, sizeof(*sg)); > - sg->page = bvec->bv_page; > + sg_dma_len(sg) = 0; > + sg_dma_address(sg) = 0; > + sg_set_page(sg, bvec->bv_page); > sg->length = nbytes; > sg->offset = bvec->bv_offset; > nsegs++; > @@ -1363,6 +1364,9 @@ new_segment: > bvprv = bvec; > } /* segments in rq */ > > + if (sg) > + __sg_mark_end(sg); > + > return nsegs; > } Hmm.... this breaks s390: CC block/ll_rw_blk.o block/ll_rw_blk.c: In function 'blk_rq_map_sg': block/ll_rw_blk.c:1357: error: implicit declaration of function 'sg_dma_len' block/ll_rw_blk.c:1357: error: lvalue required as left operand of assignment block/ll_rw_blk.c:1358: error: implicit declaration of function 'sg_dma_address' block/ll_rw_blk.c:1358: error: lvalue required as left operand of assignment make[1]: *** [block/ll_rw_blk.o] Error 1 Missing macros and no appropriate members in struct scatterlist since we don't have DMA. How to fix? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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