summaryrefslogtreecommitdiff
path: root/fs/orangefs/orangefs-bufmap.h
blob: babdc713c5e07e072711b1b5397ba3ce17c89338 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
/*
 * (C) 2001 Clemson University and The University of Chicago
 *
 * See COPYING in top-level directory.
 */

#ifndef __ORANGEFS_BUFMAP_H
#define __ORANGEFS_BUFMAP_H

struct orangefs_bufmap;

int orangefs_bufmap_size_query(void);

int orangefs_bufmap_shift_query(void);

int orangefs_bufmap_initialize(struct ORANGEFS_dev_map_desc *user_desc);

void orangefs_bufmap_finalize(void);

void orangefs_bufmap_run_down(void);

int orangefs_bufmap_get(struct orangefs_bufmap **mapp, int *buffer_index);

void orangefs_bufmap_put(int buffer_index);

int orangefs_readdir_index_get(struct orangefs_bufmap **mapp, int *buffer_index);

void orangefs_readdir_index_put(int buffer_index);

int orangefs_bufmap_copy_from_iovec(struct iov_iter *iter,
				int buffer_index,
				size_t size);

int orangefs_bufmap_copy_to_iovec(struct iov_iter *iter,
			      int buffer_index,
			      size_t size);

size_t orangefs_bufmap_copy_to_user_task_iovec(struct task_struct *tsk,
					   struct iovec *iovec,
					   unsigned long nr_segs,
					   struct orangefs_bufmap *bufmap,
					   int buffer_index,
					   size_t bytes_to_be_copied);

#endif /* __ORANGEFS_BUFMAP_H */