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authorPatrick McHardy <kaber@trash.net>2010-04-20 10:02:01 -0400
committerPatrick McHardy <kaber@trash.net>2010-04-20 10:02:01 -0400
commit62910554656cdcd6b6f84a5154c4155aae4ca231 (patch)
treedcf14004f6fd2ef7154362ff948bfeba0f3ea92d /fs/ceph/buffer.h
parent22265a5c3c103cf8c50be62e6c90d045eb649e6d (diff)
parentab9304717f7624c41927f442e6b6d418b2d8b3e4 (diff)
Merge branch 'master' of /repos/git/net-next-2.6
Conflicts: Documentation/feature-removal-schedule.txt net/ipv6/netfilter/ip6t_REJECT.c net/netfilter/xt_limit.c Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'fs/ceph/buffer.h')
-rw-r--r--fs/ceph/buffer.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/fs/ceph/buffer.h b/fs/ceph/buffer.h
new file mode 100644
index 000000000000..58d19014068f
--- /dev/null
+++ b/fs/ceph/buffer.h
@@ -0,0 +1,39 @@
1#ifndef __FS_CEPH_BUFFER_H
2#define __FS_CEPH_BUFFER_H
3
4#include <linux/kref.h>
5#include <linux/mm.h>
6#include <linux/vmalloc.h>
7#include <linux/types.h>
8#include <linux/uio.h>
9
10/*
11 * a simple reference counted buffer.
12 *
13 * use kmalloc for small sizes (<= one page), vmalloc for larger
14 * sizes.
15 */
16struct ceph_buffer {
17 struct kref kref;
18 struct kvec vec;
19 size_t alloc_len;
20 bool is_vmalloc;
21};
22
23extern struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp);
24extern void ceph_buffer_release(struct kref *kref);
25
26static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b)
27{
28 kref_get(&b->kref);
29 return b;
30}
31
32static inline void ceph_buffer_put(struct ceph_buffer *b)
33{
34 kref_put(&b->kref, ceph_buffer_release);
35}
36
37extern int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end);
38
39#endif