bio->bi_io_vec[0].bv_offset = 0; 
bio->bi_io_vec[0].bv_offset = bp->l_offset; 
static int lbmRead(struct jfs_log * log, int pn, struct lbuf ** bpp){	struct bio *bio;	struct lbuf *bp;	/*	 * allocate a log buffer	 */	*bpp = bp = lbmAllocate(log, pn);	jfs_info("lbmRead: bp:0x%p pn:0x%x", bp, pn);	bp->l_flag |= lbmREAD;	bio = bio_alloc(GFP_NOFS, 1);	bio->bi_sector = bp->l_blkno << (log->l2bsize - 9);	bio->bi_bdev = log->bdev;	bio->bi_io_vec[0].bv_page = virt_to_page(bp->l_ldata);	bio->bi_io_vec[0].bv_len = LOGPSIZE;	bio->bi_io_vec[0].bv_offset = 0;	bio->bi_vcnt = 1;	bio->bi_idx = 0;	bio->bi_size = LOGPSIZE;	bio->bi_end_io = lbmIODone;	bio->bi_private = bp;	submit_bio(READ_SYNC, bio);	wait_event(bp->l_ioevent, (bp->l_flag != lbmREAD));	return 0;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/dc5798d9a7b656550533a5c0177dba17d4ef4990/jfs_logmgr.c/buggy/fs/jfs/jfs_logmgr.c