ReactOS 0.4.15-dev-8096-ga0eec98
ext4.h
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1#ifndef _EXT4_H
2#define _EXT4_H
3
4#include <linux/jbd.h>
5/* Temporarily we need this. */
6#include <linux/ext3_fs.h>
7
8typedef unsigned __int16 uint16_t;
9typedef unsigned __int32 uint32_t;
10typedef unsigned __int64 uint64_t;
11
14
15/*
16 * Flags used by ext4_map_blocks()
17 */
18 /* Allocate any needed blocks and/or convert an unwritten
19 extent to be an initialized ext4 */
20#define EXT4_GET_BLOCKS_CREATE 0x0001
21 /* Request the creation of an unwritten extent */
22#define EXT4_GET_BLOCKS_UNWRIT_EXT 0x0002
23#define EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT (EXT4_GET_BLOCKS_UNWRIT_EXT|\
24 EXT4_GET_BLOCKS_CREATE)
25 /* Caller is from the delayed allocation writeout path
26 * finally doing the actual allocation of delayed blocks */
27#define EXT4_GET_BLOCKS_DELALLOC_RESERVE 0x0004
28 /* caller is from the direct IO path, request to creation of an
29 unwritten extents if not allocated, split the unwritten
30 extent if blocks has been preallocated already*/
31#define EXT4_GET_BLOCKS_PRE_IO 0x0008
32#define EXT4_GET_BLOCKS_CONVERT 0x0010
33#define EXT4_GET_BLOCKS_IO_CREATE_EXT (EXT4_GET_BLOCKS_PRE_IO|\
34 EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT)
35 /* Convert extent to initialized after IO complete */
36#define EXT4_GET_BLOCKS_IO_CONVERT_EXT (EXT4_GET_BLOCKS_CONVERT|\
37 EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT)
38 /* Eventual metadata allocation (due to growing extent tree)
39 * should not fail, so try to use reserved blocks for that.*/
40#define EXT4_GET_BLOCKS_METADATA_NOFAIL 0x0020
41 /* Don't normalize allocation size (used for fallocate) */
42#define EXT4_GET_BLOCKS_NO_NORMALIZE 0x0040
43 /* Request will not result in inode size update (user for fallocate) */
44#define EXT4_GET_BLOCKS_KEEP_SIZE 0x0080
45 /* Do not take i_data_sem locking in ext4_map_blocks */
46#define EXT4_GET_BLOCKS_NO_LOCK 0x0100
47 /* Do not put hole in extent cache */
48#define EXT4_GET_BLOCKS_NO_PUT_HOLE 0x0200
49 /* Convert written extents to unwritten */
50#define EXT4_GET_BLOCKS_CONVERT_UNWRITTEN 0x0400
51
52/*
53 * The bit position of these flags must not overlap with any of the
54 * EXT4_GET_BLOCKS_*. They are used by ext4_find_extent(),
55 * read_extent_tree_block(), ext4_split_extent_at(),
56 * ext4_ext_insert_extent(), and ext4_ext_create_new_leaf().
57 * EXT4_EX_NOCACHE is used to indicate that the we shouldn't be
58 * caching the extents when reading from the extent tree while a
59 * truncate or punch hole operation is in progress.
60 */
61#define EXT4_EX_NOCACHE 0x40000000
62#define EXT4_EX_FORCE_CACHE 0x20000000
63
64/*
65 * Flags used by ext4_free_blocks
66 */
67#define EXT4_FREE_BLOCKS_METADATA 0x0001
68#define EXT4_FREE_BLOCKS_FORGET 0x0002
69#define EXT4_FREE_BLOCKS_VALIDATED 0x0004
70#define EXT4_FREE_BLOCKS_NO_QUOT_UPDATE 0x0008
71#define EXT4_FREE_BLOCKS_NOFREE_FIRST_CLUSTER 0x0010
72#define EXT4_FREE_BLOCKS_NOFREE_LAST_CLUSTER 0x0020
73
74/*
75 * Flags used in mballoc's allocation_context flags field.
76 *
77 * Also used to show what's going on for debugging purposes when the
78 * flag field is exported via the traceport interface
79 */
80
81/* prefer goal again. length */
82#define EXT4_MB_HINT_MERGE 0x0001
83/* blocks already reserved */
84#define EXT4_MB_HINT_RESERVED 0x0002
85/* metadata is being allocated */
86#define EXT4_MB_HINT_METADATA 0x0004
87/* first blocks in the file */
88#define EXT4_MB_HINT_FIRST 0x0008
89/* search for the best chunk */
90#define EXT4_MB_HINT_BEST 0x0010
91/* data is being allocated */
92#define EXT4_MB_HINT_DATA 0x0020
93/* don't preallocate (for tails) */
94#define EXT4_MB_HINT_NOPREALLOC 0x0040
95/* allocate for locality group */
96#define EXT4_MB_HINT_GROUP_ALLOC 0x0080
97/* allocate goal blocks or none */
98#define EXT4_MB_HINT_GOAL_ONLY 0x0100
99/* goal is meaningful */
100#define EXT4_MB_HINT_TRY_GOAL 0x0200
101/* blocks already pre-reserved by delayed allocation */
102#define EXT4_MB_DELALLOC_RESERVED 0x0400
103/* We are doing stream allocation */
104#define EXT4_MB_STREAM_ALLOC 0x0800
105/* Use reserved root blocks if needed */
106#define EXT4_MB_USE_ROOT_BLOCKS 0x1000
107/* Use blocks from reserved pool */
108#define EXT4_MB_USE_RESERVED 0x2000
109
110
111#define ext4_sb_info ext3_sb_info
112
113static inline struct ext4_sb_info * EXT4_SB(struct super_block *sb)
114{
115 return sb->s_fs_info;
116}
117#define EXT4_I(i) (i)
118
119#include <linux/ext4_jbd2.h>
120#include <linux/ext4_ext.h>
121
122#endif /* _EXT4_H */
#define __int16
Definition: basetyps.h:22
#define __int64
Definition: basetyps.h:16
#define __int32
Definition: basetyps.h:19
UINT32 uint32_t
Definition: types.h:75
UINT64 uint64_t
Definition: types.h:77
superblock * sb
Definition: btrfs.c:4261
unsigned __int16 uint16_t
Definition: ext4.h:8
unsigned __int32 uint32_t
Definition: ext4.h:9
static struct ext4_sb_info * EXT4_SB(struct super_block *sb)
Definition: ext4.h:113
#define ext4_sb_info
Definition: ext4.h:111
uint32_t ext4_lblk_t
Definition: ext4.h:12
uint64_t ext4_fsblk_t
Definition: ext4.h:13
unsigned __int64 uint64_t
Definition: ext4.h:10
Definition: fs.h:64