fs/orangefs/orangefs-bufmap.h

   1 /*
   2  * (C) 2001 Clemson University and The University of Chicago
   3  *
   4  * See COPYING in top-level directory.
   5  */
   6
   7 #ifndef __ORANGEFS_BUFMAP_H
   8 #define __ORANGEFS_BUFMAP_H
   9
  10 struct orangefs_bufmap;
  11
  12 int orangefs_bufmap_size_query(void);
  13
  14 int orangefs_bufmap_shift_query(void);
  15
  16 int orangefs_bufmap_initialize(struct ORANGEFS_dev_map_desc *user_desc);
  17
  18 void orangefs_bufmap_finalize(void);
  19
  20 void orangefs_bufmap_run_down(void);
  21
  22 int orangefs_bufmap_get(struct orangefs_bufmap **mapp, int *buffer_index);
  23
  24 void orangefs_bufmap_put(int buffer_index);
  25
  26 int orangefs_readdir_index_get(struct orangefs_bufmap **mapp, int *buffer_index);
  27
  28 void orangefs_readdir_index_put(int buffer_index);
  29
  30 int orangefs_bufmap_copy_from_iovec(struct orangefs_bufmap *bufmap,
  31                                 struct iov_iter *iter,
  32                                 int buffer_index,
  33                                 size_t size);
  34
  35 int orangefs_bufmap_copy_to_iovec(struct orangefs_bufmap *bufmap,
  36                               struct iov_iter *iter,
  37                               int buffer_index,
  38                               size_t size);
  39
  40 size_t orangefs_bufmap_copy_to_user_task_iovec(struct task_struct *tsk,
  41                                            struct iovec *iovec,
  42                                            unsigned long nr_segs,
  43                                            struct orangefs_bufmap *bufmap,
  44                                            int buffer_index,
  45                                            size_t bytes_to_be_copied);
  46
  47 #endif /* __ORANGEFS_BUFMAP_H */