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libceph: fix messenger CONFIG_BLOCK dependencies

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The ceph messenger has a few spots that are only used when
bio messages are supported, and that's only when CONFIG_BLOCK
is defined.  This surrounds a couple of spots with #ifdef's
that would cause a problem if CONFIG_BLOCK were not present
in the kernel configuration.

This resolves:
    http://tracker.ceph.com/issues/3976

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
This commit is contained in:
Alex Elder 2013-01-31 16:02:01 -06:00 committed by Sage Weil
parent 695b711933
commit 3ebc21f7bc
2 changed files with 6 additions and 1 deletions
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2
include/linux/ceph/messenger.h
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@ -83,9 +83,11 @@ struct ceph_msg {
struct list_head list_head;
struct kref kref;
#ifdef CONFIG_BLOCK
struct bio *bio; /* instead of pages/pagelist */
struct bio *bio_iter; /* bio iterator */
int bio_seg; /* current bio segment */
#endif /* CONFIG_BLOCK */
struct ceph_pagelist *trail; /* the trailing part of the data */
bool front_is_vmalloc;
bool more_to_follow;

5
net/ceph/messenger.c
View File

@ -9,8 +9,9 @@
#include <linux/slab.h>
#include <linux/socket.h>
#include <linux/string.h>
#ifdef CONFIG_BLOCK
#include <linux/bio.h>
#include <linux/blkdev.h>
#endif /* CONFIG_BLOCK */
#include <linux/dns_resolver.h>
#include <net/tcp.h>
@ -2651,9 +2652,11 @@ struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags,
m->page_alignment = 0;
m->pages = NULL;
m->pagelist = NULL;
#ifdef CONFIG_BLOCK
m->bio = NULL;
m->bio_iter = NULL;
m->bio_seg = 0;
#endif /* CONFIG_BLOCK */
m->trail = NULL;
/* front */