Don't blatt first element of prv in sg_chain()
I realize that sg chaining is a ploy to make the rest of the kernel
devs feel the pain of the SCSI subsystem. But this was a little
unsubtle.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h
index 416e000..e3ff21d 100644
--- a/include/linux/scatterlist.h
+++ b/include/linux/scatterlist.h
@@ -191,8 +191,8 @@
/*
* offset and length are unused for chain entry. Clear them.
*/
- prv->offset = 0;
- prv->length = 0;
+ prv[prv_nents - 1].offset = 0;
+ prv[prv_nents - 1].length = 0;
/*
* Set lowest bit to indicate a link pointer, and make sure to clear