Commit 60573b87 authored Oct 17, 2007 by Jens Axboe

[BLOCK] Clear sg entry before filling in blk_rq_map_sg()

The memset() of the sg entry was originally removed, because it could
overwrite a chain pointer. But it's quite OK to memset() it when we know
it's a valid entry, since it can't contain a chain pointer.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

parent bdb02504

block/ll_rw_blk.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1352,6 +1352,7 @@ new_segment:
		sg = next_sg;
		next_sg = sg_next(sg);

		memset(sg, 0, sizeof(*sg));
		sg->page = bvec->bv_page;
		sg->length = nbytes;
		sg->offset = bvec->bv_offset;

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