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TOMOYO Linux Cross Reference
Linux/include/linux/ceph/buffer.h

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  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 smaller sizes, vmalloc for larger sizes.
 14  */
 15 struct ceph_buffer {
 16         struct kref kref;
 17         struct kvec vec;
 18         size_t alloc_len;
 19 };
 20 
 21 extern struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp);
 22 extern void ceph_buffer_release(struct kref *kref);
 23 
 24 static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b)
 25 {
 26         kref_get(&b->kref);
 27         return b;
 28 }
 29 
 30 static inline void ceph_buffer_put(struct ceph_buffer *b)
 31 {
 32         kref_put(&b->kref, ceph_buffer_release);
 33 }
 34 
 35 extern int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end);
 36 
 37 #endif
 38 

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