Release 4.12 include/linux/ceph/buffer.h

#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 smaller sizes, vmalloc for larger sizes.
 */

struct ceph_buffer {
	
struct kref kref;
	
struct kvec vec;
	
size_t alloc_len;
};

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);
	return b;
}

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static inline void ceph_buffer_put(struct ceph_buffer *b)
{
	kref_put(&b->kref, ceph_buffer_release);
}

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extern int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end);

#endif
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Directory: include/linux/ceph

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