libceph: make ceph_msg->bio_seg be unsigned

The bio_seg field is used by the ceph messenger in iterating through
a bio.  It should never have a negative value, so make it an
unsigned.  (I contemplated making it unsigned short to match the
struct bio definition, but it offered no benefit.)

Change variables used to hold bio_seg values to all be unsigned as
well.  Change two variable names in init_bio_iter() to match the
convention used everywhere else.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index 60903e0f665c..8297288a66e0 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -86,7 +86,7 @@ struct ceph_msg {
 #ifdef CONFIG_BLOCK
         struct bio  *bio;               /* instead of pages/pagelist */
         struct bio  *bio_iter;          /* bio iterator */
-        int bio_seg;                    /* current bio segment */
+        unsigned int bio_seg;           /* current bio segment */
 #endif /* CONFIG_BLOCK */
         struct ceph_pagelist *trail;    /* the trailing part of the data */
         bool front_is_vmalloc;