cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

buffer.h (833B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __FS_CEPH_BUFFER_H
      3#define __FS_CEPH_BUFFER_H
      4
      5#include <linux/kref.h>
      6#include <linux/mm.h>
      7#include <linux/vmalloc.h>
      8#include <linux/types.h>
      9#include <linux/uio.h>
     10
     11/*
     12 * a simple reference counted buffer.
     13 *
     14 * use kmalloc for smaller sizes, vmalloc for larger sizes.
     15 */
     16struct ceph_buffer {
     17	struct kref kref;
     18	struct kvec vec;
     19	size_t alloc_len;
     20};
     21
     22extern struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp);
     23extern void ceph_buffer_release(struct kref *kref);
     24
     25static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b)
     26{
     27	kref_get(&b->kref);
     28	return b;
     29}
     30
     31static inline void ceph_buffer_put(struct ceph_buffer *b)
     32{
     33	if (b)
     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