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Diffstat (limited to 'fs/btrfs/extent_io.h')
-rw-r--r--fs/btrfs/extent_io.h108
1 files changed, 59 insertions, 49 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 2eacfabd326..ccc264e7bde 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -19,6 +19,7 @@
#define EXTENT_FIRST_DELALLOC (1 << 12)
#define EXTENT_NEED_WAIT (1 << 13)
#define EXTENT_DAMAGED (1 << 14)
+#define EXTENT_NORESERVE (1 << 15)
#define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK)
#define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING | EXTENT_FIRST_DELALLOC)
@@ -28,6 +29,7 @@
*/
#define EXTENT_BIO_COMPRESSED 1
#define EXTENT_BIO_TREE_LOG 2
+#define EXTENT_BIO_PARENT_LOCKED 4
#define EXTENT_BIO_FLAG_SHIFT 16
/* these are bit numbers for test/set bit */
@@ -41,16 +43,14 @@
#define EXTENT_BUFFER_WRITEBACK 7
#define EXTENT_BUFFER_IOERR 8
#define EXTENT_BUFFER_DUMMY 9
+#define EXTENT_BUFFER_IN_TREE 10
/* these are flags for extent_clear_unlock_delalloc */
-#define EXTENT_CLEAR_UNLOCK_PAGE 0x1
-#define EXTENT_CLEAR_UNLOCK 0x2
-#define EXTENT_CLEAR_DELALLOC 0x4
-#define EXTENT_CLEAR_DIRTY 0x8
-#define EXTENT_SET_WRITEBACK 0x10
-#define EXTENT_END_WRITEBACK 0x20
-#define EXTENT_SET_PRIVATE2 0x40
-#define EXTENT_CLEAR_ACCOUNTING 0x80
+#define PAGE_UNLOCK (1 << 0)
+#define PAGE_CLEAR_DIRTY (1 << 1)
+#define PAGE_SET_WRITEBACK (1 << 2)
+#define PAGE_END_WRITEBACK (1 << 3)
+#define PAGE_SET_PRIVATE2 (1 << 4)
/*
* page->private values. Every page that is controlled by the extent
@@ -61,6 +61,7 @@
struct extent_state;
struct btrfs_root;
+struct btrfs_io_bio;
typedef int (extent_submit_bio_hook_t)(struct inode *inode, int rw,
struct bio *bio, int mirror_num,
@@ -72,36 +73,32 @@ struct extent_io_ops {
int (*writepage_start_hook)(struct page *page, u64 start, u64 end);
int (*writepage_io_hook)(struct page *page, u64 start, u64 end);
extent_submit_bio_hook_t *submit_bio_hook;
- int (*merge_bio_hook)(struct page *page, unsigned long offset,
+ int (*merge_bio_hook)(int rw, struct page *page, unsigned long offset,
size_t size, struct bio *bio,
unsigned long bio_flags);
- int (*readpage_io_hook)(struct page *page, u64 start, u64 end);
int (*readpage_io_failed_hook)(struct page *page, int failed_mirror);
- int (*readpage_end_io_hook)(struct page *page, u64 start, u64 end,
- struct extent_state *state, int mirror);
+ int (*readpage_end_io_hook)(struct btrfs_io_bio *io_bio, u64 phy_offset,
+ struct page *page, u64 start, u64 end,
+ int mirror);
int (*writepage_end_io_hook)(struct page *page, u64 start, u64 end,
struct extent_state *state, int uptodate);
void (*set_bit_hook)(struct inode *inode, struct extent_state *state,
- int *bits);
+ unsigned long *bits);
void (*clear_bit_hook)(struct inode *inode, struct extent_state *state,
- int *bits);
+ unsigned long *bits);
void (*merge_extent_hook)(struct inode *inode,
struct extent_state *new,
struct extent_state *other);
void (*split_extent_hook)(struct inode *inode,
struct extent_state *orig, u64 split);
- int (*write_cache_pages_lock_hook)(struct page *page, void *data,
- void (*flush_fn)(void *));
};
struct extent_io_tree {
struct rb_root state;
- struct radix_tree_root buffer;
struct address_space *mapping;
u64 dirty_bytes;
int track_uptodate;
spinlock_t lock;
- spinlock_t buffer_lock;
struct extent_io_ops *ops;
};
@@ -119,7 +116,9 @@ struct extent_state {
/* for use by the FS */
u64 private;
+#ifdef CONFIG_BTRFS_DEBUG
struct list_head leak_list;
+#endif
};
#define INLINE_EXTENT_BUFFER_PAGES 16
@@ -130,12 +129,11 @@ struct extent_buffer {
unsigned long map_start;
unsigned long map_len;
unsigned long bflags;
- struct extent_io_tree *tree;
+ struct btrfs_fs_info *fs_info;
spinlock_t refs_lock;
atomic_t refs;
atomic_t io_pages;
int read_mirror;
- struct list_head leak_list;
struct rcu_head rcu_head;
pid_t lock_owner;
@@ -160,9 +158,10 @@ struct extent_buffer {
* to unlock
*/
wait_queue_head_t read_lock_wq;
- wait_queue_head_t lock_wq;
- struct page *inline_pages[INLINE_EXTENT_BUFFER_PAGES];
- struct page **pages;
+ struct page *pages[INLINE_EXTENT_BUFFER_PAGES];
+#ifdef CONFIG_BTRFS_DEBUG
+ struct list_head leak_list;
+#endif
};
static inline void extent_set_compress_type(unsigned long *bio_flags,
@@ -189,19 +188,18 @@ void extent_io_tree_init(struct extent_io_tree *tree,
int try_release_extent_mapping(struct extent_map_tree *map,
struct extent_io_tree *tree, struct page *page,
gfp_t mask);
-int try_release_extent_buffer(struct page *page, gfp_t mask);
-int try_release_extent_state(struct extent_map_tree *map,
- struct extent_io_tree *tree, struct page *page,
- gfp_t mask);
+int try_release_extent_buffer(struct page *page);
int lock_extent(struct extent_io_tree *tree, u64 start, u64 end);
int lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
- int bits, struct extent_state **cached);
+ unsigned long bits, struct extent_state **cached);
int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end);
int unlock_extent_cached(struct extent_io_tree *tree, u64 start, u64 end,
struct extent_state **cached, gfp_t mask);
int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end);
int extent_read_full_page(struct extent_io_tree *tree, struct page *page,
get_extent_t *get_extent, int mirror_num);
+int extent_read_full_page_nolock(struct extent_io_tree *tree, struct page *page,
+ get_extent_t *get_extent, int mirror_num);
int __init extent_io_init(void);
void extent_io_exit(void);
@@ -211,16 +209,17 @@ u64 count_range_bits(struct extent_io_tree *tree,
void free_extent_state(struct extent_state *state);
int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,
- int bits, int filled, struct extent_state *cached_state);
+ unsigned long bits, int filled,
+ struct extent_state *cached_state);
int clear_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
- int bits, gfp_t mask);
+ unsigned long bits, gfp_t mask);
int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
- int bits, int wake, int delete, struct extent_state **cached,
- gfp_t mask);
+ unsigned long bits, int wake, int delete,
+ struct extent_state **cached, gfp_t mask);
int set_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
- int bits, gfp_t mask);
+ unsigned long bits, gfp_t mask);
int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
- int bits, u64 *failed_start,
+ unsigned long bits, u64 *failed_start,
struct extent_state **cached_state, gfp_t mask);
int set_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end,
struct extent_state **cached_state, gfp_t mask);
@@ -233,17 +232,15 @@ int set_extent_dirty(struct extent_io_tree *tree, u64 start, u64 end,
int clear_extent_dirty(struct extent_io_tree *tree, u64 start, u64 end,
gfp_t mask);
int convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
- int bits, int clear_bits,
+ unsigned long bits, unsigned long clear_bits,
struct extent_state **cached_state, gfp_t mask);
int set_extent_delalloc(struct extent_io_tree *tree, u64 start, u64 end,
struct extent_state **cached_state, gfp_t mask);
int set_extent_defrag(struct extent_io_tree *tree, u64 start, u64 end,
struct extent_state **cached_state, gfp_t mask);
int find_first_extent_bit(struct extent_io_tree *tree, u64 start,
- u64 *start_ret, u64 *end_ret, int bits,
+ u64 *start_ret, u64 *end_ret, unsigned long bits,
struct extent_state **cached_state);
-struct extent_state *find_first_extent_bit_state(struct extent_io_tree *tree,
- u64 start, int bits);
int extent_invalidatepage(struct extent_io_tree *tree,
struct page *page, unsigned long offset);
int extent_write_full_page(struct extent_io_tree *tree, struct page *page,
@@ -264,16 +261,15 @@ int extent_readpages(struct extent_io_tree *tree,
get_extent_t get_extent);
int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len, get_extent_t *get_extent);
-int set_state_private(struct extent_io_tree *tree, u64 start, u64 private);
int get_state_private(struct extent_io_tree *tree, u64 start, u64 *private);
void set_page_extent_mapped(struct page *page);
-struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree,
+struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info,
u64 start, unsigned long len);
struct extent_buffer *alloc_dummy_extent_buffer(u64 start, unsigned long len);
struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src);
-struct extent_buffer *find_extent_buffer(struct extent_io_tree *tree,
- u64 start, unsigned long len);
+struct extent_buffer *find_extent_buffer(struct btrfs_fs_info *fs_info,
+ u64 start);
void free_extent_buffer(struct extent_buffer *eb);
void free_extent_buffer_stale(struct extent_buffer *eb);
#define WAIT_NONE 0
@@ -282,6 +278,7 @@ void free_extent_buffer_stale(struct extent_buffer *eb);
int read_extent_buffer_pages(struct extent_io_tree *tree,
struct extent_buffer *eb, u64 start, int wait,
get_extent_t *get_extent, int mirror_num);
+void wait_on_extent_buffer_writeback(struct extent_buffer *eb);
static inline unsigned long num_extent_pages(u64 start, u64 len)
{
@@ -306,6 +303,9 @@ int memcmp_extent_buffer(struct extent_buffer *eb, const void *ptrv,
void read_extent_buffer(struct extent_buffer *eb, void *dst,
unsigned long start,
unsigned long len);
+int read_extent_buffer_to_user(struct extent_buffer *eb, void __user *dst,
+ unsigned long start,
+ unsigned long len);
void write_extent_buffer(struct extent_buffer *eb, const void *src,
unsigned long start, unsigned long len);
void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src,
@@ -317,25 +317,27 @@ void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
unsigned long src_offset, unsigned long len);
void memset_extent_buffer(struct extent_buffer *eb, char c,
unsigned long start, unsigned long len);
-void wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, int bits);
void clear_extent_buffer_dirty(struct extent_buffer *eb);
int set_extent_buffer_dirty(struct extent_buffer *eb);
int set_extent_buffer_uptodate(struct extent_buffer *eb);
int clear_extent_buffer_uptodate(struct extent_buffer *eb);
int extent_buffer_uptodate(struct extent_buffer *eb);
+int extent_buffer_under_io(struct extent_buffer *eb);
int map_private_extent_buffer(struct extent_buffer *eb, unsigned long offset,
unsigned long min_len, char **map,
unsigned long *map_start,
unsigned long *map_len);
-int extent_range_uptodate(struct extent_io_tree *tree,
- u64 start, u64 end);
-int extent_clear_unlock_delalloc(struct inode *inode,
- struct extent_io_tree *tree,
- u64 start, u64 end, struct page *locked_page,
- unsigned long op);
+int extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end);
+int extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end);
+int extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end,
+ struct page *locked_page,
+ unsigned long bits_to_clear,
+ unsigned long page_ops);
struct bio *
btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
gfp_t gfp_flags);
+struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs);
+struct bio *btrfs_bio_clone(struct bio *bio, gfp_t gfp_mask);
struct btrfs_fs_info;
@@ -345,4 +347,12 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 start,
int end_extent_writepage(struct page *page, int err, u64 start, u64 end);
int repair_eb_io_failure(struct btrfs_root *root, struct extent_buffer *eb,
int mirror_num);
+#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+noinline u64 find_lock_delalloc_range(struct inode *inode,
+ struct extent_io_tree *tree,
+ struct page *locked_page, u64 *start,
+ u64 *end, u64 max_bytes);
+struct extent_buffer *alloc_test_extent_buffer(struct btrfs_fs_info *fs_info,
+ u64 start, unsigned long len);
+#endif
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 16:04:15 +0000