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This fixes a problem similar to the patch I submitted on 11/20 http://marc.theaimsgroup.com/?l=linux-kernel&m=106936439707962&w=2 In this case, though, the result is an: "Incorrect number of segments after building list" message. The macro __BVEC_START assumes a bi_idx of zero when the dm code can submit a bio with a non-zero bi_idx. The code has been tested on an 8 way / 8gb OSDL STP machine with a 197G lvm volume running dbt2 test. ===== include/linux/bio.h 1.34 vs edited ===== --- 1.34/include/linux/bio.h Sun Sep 21 14:50:33 2003 +++ edited/include/linux/bio.h Wed Dec 17 07:17:53 2003 @@ -162,7 +162,7 @@ */ #define __BVEC_END(bio) bio_iovec_idx((bio), (bio)->bi_vcnt - 1) -#define __BVEC_START(bio) bio_iovec_idx((bio), 0) +#define __BVEC_START(bio) bio_iovec_idx((bio), (bio)->bi_idx) #define BIOVEC_PHYS_MERGEABLE(vec1, vec2) \ ((bvec_to_phys((vec1)) + (vec1)->bv_len) == bvec_to_phys((vec2))) #define BIOVEC_VIRT_MERGEABLE(vec1, vec2) \ -- Mark Haverkamp <markh@osdl.org> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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