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#ifndef __FS_CEPH_BUFFER_H
#define __FS_CEPH_BUFFER_H
#include <linux/kref.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <linux/types.h>
#include <linux/uio.h>
 * a simple reference counted buffer.
 * use kmalloc for small sizes (<= one page), vmalloc for larger
struct ceph_buffer {
	struct kref kref;
	struct kvec vec;
	size_t alloc_len;
	bool is_vmalloc;
extern struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp);
extern void ceph_buffer_release(struct kref *kref);
static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b)
	kref_get(&b->kref);
static inline void ceph_buffer_put(struct ceph_buffer *b)
	kref_put(&b->kref, ceph_buffer_release);
extern int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end);

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