Contributors: 17
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| David Sterba |
334 |
31.27% |
13 |
15.48% |
| Chris Mason |
277 |
25.94% |
15 |
17.86% |
| Josef Whiter |
238 |
22.28% |
9 |
10.71% |
| Filipe David Borba Manana |
61 |
5.71% |
19 |
22.62% |
| Qu Wenruo |
57 |
5.34% |
7 |
8.33% |
| Josef Bacik |
33 |
3.09% |
7 |
8.33% |
| Arne Jansen |
24 |
2.25% |
1 |
1.19% |
| Nikolay Borisov |
11 |
1.03% |
3 |
3.57% |
| Miao Xie |
11 |
1.03% |
1 |
1.19% |
| Zheng Yan |
5 |
0.47% |
2 |
2.38% |
| Eric Sandeen |
5 |
0.47% |
1 |
1.19% |
| Anand Jain |
3 |
0.28% |
1 |
1.19% |
| Wan Jiabing |
3 |
0.28% |
1 |
1.19% |
| Mark Fasheh |
2 |
0.19% |
1 |
1.19% |
| Jeff Mahoney |
2 |
0.19% |
1 |
1.19% |
| Greg Kroah-Hartman |
1 |
0.09% |
1 |
1.19% |
| Elena Reshetova |
1 |
0.09% |
1 |
1.19% |
| Total |
1068 |
|
84 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef BTRFS_EXTENT_IO_TREE_H
#define BTRFS_EXTENT_IO_TREE_H
#include <linux/rbtree.h>
#include <linux/spinlock.h>
#include <linux/refcount.h>
#include <linux/list.h>
#include <linux/wait.h>
#include "misc.h"
struct extent_changeset;
struct btrfs_fs_info;
struct btrfs_inode;
/* Bits for the extent state */
enum {
ENUM_BIT(EXTENT_DIRTY),
ENUM_BIT(EXTENT_LOCKED),
ENUM_BIT(EXTENT_DIO_LOCKED),
ENUM_BIT(EXTENT_NEW),
ENUM_BIT(EXTENT_DELALLOC),
ENUM_BIT(EXTENT_DEFRAG),
ENUM_BIT(EXTENT_BOUNDARY),
ENUM_BIT(EXTENT_NODATASUM),
ENUM_BIT(EXTENT_CLEAR_META_RESV),
ENUM_BIT(EXTENT_NEED_WAIT),
ENUM_BIT(EXTENT_NORESERVE),
ENUM_BIT(EXTENT_QGROUP_RESERVED),
ENUM_BIT(EXTENT_CLEAR_DATA_RESV),
/*
* Must be cleared only during ordered extent completion or on error
* paths if we did not manage to submit bios and create the ordered
* extents for the range. Should not be cleared during page release
* and page invalidation (if there is an ordered extent in flight),
* that is left for the ordered extent completion.
*/
ENUM_BIT(EXTENT_DELALLOC_NEW),
/*
* Mark that a range is being locked for finishing an ordered extent.
* Used together with EXTENT_LOCKED.
*/
ENUM_BIT(EXTENT_FINISHING_ORDERED),
/*
* When an ordered extent successfully completes for a region marked as
* a new delalloc range, use this flag when clearing a new delalloc
* range to indicate that the VFS' inode number of bytes should be
* incremented and the inode's new delalloc bytes decremented, in an
* atomic way to prevent races with stat(2).
*/
ENUM_BIT(EXTENT_ADD_INODE_BYTES),
/*
* Set during truncate when we're clearing an entire range and we just
* want the extent states to go away.
*/
ENUM_BIT(EXTENT_CLEAR_ALL_BITS),
/*
* This must be last.
*
* Bit not representing a state but a request for NOWAIT semantics,
* e.g. when allocating memory, and must be masked out from the other
* bits.
*/
ENUM_BIT(EXTENT_NOWAIT)
};
#define EXTENT_DO_ACCOUNTING (EXTENT_CLEAR_META_RESV | \
EXTENT_CLEAR_DATA_RESV)
#define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING | \
EXTENT_ADD_INODE_BYTES | \
EXTENT_CLEAR_ALL_BITS)
#define EXTENT_LOCK_BITS (EXTENT_LOCKED | EXTENT_DIO_LOCKED)
/*
* Redefined bits above which are used only in the device allocation tree,
* shouldn't be using EXTENT_LOCKED / EXTENT_BOUNDARY / EXTENT_CLEAR_META_RESV
* / EXTENT_CLEAR_DATA_RESV because they have special meaning to the bit
* manipulation functions
*/
#define CHUNK_ALLOCATED EXTENT_DIRTY
#define CHUNK_TRIMMED EXTENT_DEFRAG
#define CHUNK_STATE_MASK (CHUNK_ALLOCATED | \
CHUNK_TRIMMED)
enum {
IO_TREE_FS_PINNED_EXTENTS,
IO_TREE_FS_EXCLUDED_EXTENTS,
IO_TREE_BTREE_INODE_IO,
IO_TREE_INODE_IO,
IO_TREE_RELOC_BLOCKS,
IO_TREE_TRANS_DIRTY_PAGES,
IO_TREE_ROOT_DIRTY_LOG_PAGES,
IO_TREE_INODE_FILE_EXTENT,
IO_TREE_LOG_CSUM_RANGE,
IO_TREE_SELFTEST,
IO_TREE_DEVICE_ALLOC_STATE,
};
struct extent_io_tree {
struct rb_root state;
/*
* The fs_info is needed for trace points, a tree attached to an inode
* needs the inode.
*
* owner == IO_TREE_INODE_IO - then inode is valid and fs_info can be
* accessed as inode->root->fs_info
*/
union {
struct btrfs_fs_info *fs_info;
struct btrfs_inode *inode;
};
/* Who owns this io tree, should be one of IO_TREE_* */
u8 owner;
spinlock_t lock;
};
struct extent_state {
u64 start;
u64 end; /* inclusive */
struct rb_node rb_node;
/* ADD NEW ELEMENTS AFTER THIS */
wait_queue_head_t wq;
refcount_t refs;
u32 state;
#ifdef CONFIG_BTRFS_DEBUG
struct list_head leak_list;
#endif
};
const struct btrfs_inode *btrfs_extent_io_tree_to_inode(const struct extent_io_tree *tree);
const struct btrfs_fs_info *btrfs_extent_io_tree_to_fs_info(const struct extent_io_tree *tree);
void btrfs_extent_io_tree_init(struct btrfs_fs_info *fs_info,
struct extent_io_tree *tree, unsigned int owner);
void btrfs_extent_io_tree_release(struct extent_io_tree *tree);
int btrfs_lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, u32 bits,
struct extent_state **cached);
bool btrfs_try_lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
u32 bits, struct extent_state **cached);
static inline int btrfs_lock_extent(struct extent_io_tree *tree, u64 start, u64 end,
struct extent_state **cached)
{
return btrfs_lock_extent_bits(tree, start, end, EXTENT_LOCKED, cached);
}
static inline bool btrfs_try_lock_extent(struct extent_io_tree *tree, u64 start,
u64 end, struct extent_state **cached)
{
return btrfs_try_lock_extent_bits(tree, start, end, EXTENT_LOCKED, cached);
}
int __init btrfs_extent_state_init_cachep(void);
void __cold btrfs_extent_state_free_cachep(void);
u64 btrfs_count_range_bits(struct extent_io_tree *tree,
u64 *start, u64 search_end,
u64 max_bytes, u32 bits, int contig,
struct extent_state **cached_state);
void btrfs_free_extent_state(struct extent_state *state);
bool btrfs_test_range_bit(struct extent_io_tree *tree, u64 start, u64 end, u32 bit,
struct extent_state *cached_state);
bool btrfs_test_range_bit_exists(struct extent_io_tree *tree, u64 start, u64 end, u32 bit);
void btrfs_get_range_bits(struct extent_io_tree *tree, u64 start, u64 end, u32 *bits,
struct extent_state **cached_state);
int btrfs_clear_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
u32 bits, struct extent_changeset *changeset);
int btrfs_clear_extent_bit_changeset(struct extent_io_tree *tree, u64 start, u64 end,
u32 bits, struct extent_state **cached,
struct extent_changeset *changeset);
static inline int btrfs_clear_extent_bit(struct extent_io_tree *tree, u64 start,
u64 end, u32 bits,
struct extent_state **cached)
{
return btrfs_clear_extent_bit_changeset(tree, start, end, bits, cached, NULL);
}
static inline int btrfs_unlock_extent(struct extent_io_tree *tree, u64 start, u64 end,
struct extent_state **cached)
{
return btrfs_clear_extent_bit_changeset(tree, start, end, EXTENT_LOCKED,
cached, NULL);
}
static inline int btrfs_clear_extent_bits(struct extent_io_tree *tree, u64 start,
u64 end, u32 bits)
{
return btrfs_clear_extent_bit(tree, start, end, bits, NULL);
}
int btrfs_set_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
u32 bits, struct extent_changeset *changeset);
int btrfs_set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
u32 bits, struct extent_state **cached_state);
static inline int btrfs_clear_extent_dirty(struct extent_io_tree *tree, u64 start,
u64 end, struct extent_state **cached)
{
return btrfs_clear_extent_bit(tree, start, end,
EXTENT_DIRTY | EXTENT_DELALLOC |
EXTENT_DO_ACCOUNTING, cached);
}
int btrfs_convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
u32 bits, u32 clear_bits,
struct extent_state **cached_state);
bool btrfs_find_first_extent_bit(struct extent_io_tree *tree, u64 start,
u64 *start_ret, u64 *end_ret, u32 bits,
struct extent_state **cached_state);
void btrfs_find_first_clear_extent_bit(struct extent_io_tree *tree, u64 start,
u64 *start_ret, u64 *end_ret, u32 bits);
bool btrfs_find_contiguous_extent_bit(struct extent_io_tree *tree, u64 start,
u64 *start_ret, u64 *end_ret, u32 bits);
bool btrfs_find_delalloc_range(struct extent_io_tree *tree, u64 *start,
u64 *end, u64 max_bytes,
struct extent_state **cached_state);
static inline int btrfs_lock_dio_extent(struct extent_io_tree *tree, u64 start,
u64 end, struct extent_state **cached)
{
return btrfs_lock_extent_bits(tree, start, end, EXTENT_DIO_LOCKED, cached);
}
static inline bool btrfs_try_lock_dio_extent(struct extent_io_tree *tree, u64 start,
u64 end, struct extent_state **cached)
{
return btrfs_try_lock_extent_bits(tree, start, end, EXTENT_DIO_LOCKED, cached);
}
static inline int btrfs_unlock_dio_extent(struct extent_io_tree *tree, u64 start,
u64 end, struct extent_state **cached)
{
return btrfs_clear_extent_bit_changeset(tree, start, end, EXTENT_DIO_LOCKED,
cached, NULL);
}
struct extent_state *btrfs_next_extent_state(struct extent_io_tree *tree,
struct extent_state *state);
#endif /* BTRFS_EXTENT_IO_TREE_H */