Messages in this thread Patch in this message | | | Date | Wed, 11 Dec 2002 12:20:37 +0000 | Subject | Re: [PATCH] dm.c - device-mapper I/O path fixes | From | Joe Thornber <> |
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Some fields in the duplicated bio weren't being set up properly in __split_page(). [Kevin Corry]
--- diff/drivers/md/dm.c 2002-12-11 12:00:39.000000000 +0000 +++ source/drivers/md/dm.c 2002-12-11 12:00:44.000000000 +0000 @@ -337,7 +337,7 @@ { struct dm_target *ti = dm_table_find_target(ci->md->map, ci->sector); struct bio *clone, *bio = ci->bio; - struct bio_vec *bv = bio->bi_io_vec + (bio->bi_vcnt - 1); + struct bio_vec *bv = bio->bi_io_vec + ci->idx; DMWARN("splitting page"); @@ -349,11 +349,13 @@ clone->bi_sector = ci->sector; clone->bi_bdev = bio->bi_bdev; - clone->bi_flags = bio->bi_flags | (1 << BIO_SEG_VALID); clone->bi_rw = bio->bi_rw; + clone->bi_vcnt = 1; clone->bi_size = len << SECTOR_SHIFT; clone->bi_end_io = clone_endio; clone->bi_private = ci->io; + clone->bi_io_vec->bv_offset = bv->bv_len - clone->bi_size; + clone->bi_io_vec->bv_len = clone->bi_size; ci->sector += len; ci->sector_count -= len; - 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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