git.sesse.net Git - bcachefs-tools-debian/blob - libbcachefs/btree_write_buffer_types.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _BCACHEFS_BTREE_WRITE_BUFFER_TYPES_H
   3 #define _BCACHEFS_BTREE_WRITE_BUFFER_TYPES_H
   4
   5 #include "darray.h"
   6 #include "journal_types.h"
   7
   8 #define BTREE_WRITE_BUFERED_VAL_U64s_MAX        4
   9 #define BTREE_WRITE_BUFERED_U64s_MAX    (BKEY_U64s + BTREE_WRITE_BUFERED_VAL_U64s_MAX)
  10
  11 struct wb_key_ref {
  12 union {
  13         struct {
  14 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
  15                 unsigned                        idx:24;
  16                 u8                              pos[sizeof(struct bpos)];
  17                 enum btree_id                   btree:8;
  18 #else
  19                 enum btree_id                   btree:8;
  20                 u8                              pos[sizeof(struct bpos)];
  21                 unsigned                        idx:24;
  22 #endif
  23         } __packed;
  24         struct {
  25 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
  26                 u64 lo;
  27                 u64 mi;
  28                 u64 hi;
  29 #else
  30                 u64 hi;
  31                 u64 mi;
  32                 u64 lo;
  33 #endif
  34         };
  35 };
  36 };
  37
  38 struct btree_write_buffered_key {
  39         enum btree_id                   btree:8;
  40         u64                             journal_seq:56;
  41         __BKEY_PADDED(k, BTREE_WRITE_BUFERED_VAL_U64s_MAX);
  42 };
  43
  44 struct btree_write_buffer_keys {
  45         DARRAY(struct btree_write_buffered_key) keys;
  46         struct journal_entry_pin        pin;
  47         struct mutex                    lock;
  48 };
  49
  50 struct btree_write_buffer {
  51         DARRAY(struct wb_key_ref)       sorted;
  52         struct btree_write_buffer_keys  inc;
  53         struct btree_write_buffer_keys  flushing;
  54         struct work_struct              flush_work;
  55 };
  56
  57 #endif /* _BCACHEFS_BTREE_WRITE_BUFFER_TYPES_H */