diff options
Diffstat (limited to 'fs/btrfs/ordered-data.h')
-rw-r--r-- | fs/btrfs/ordered-data.h | 139 |
1 files changed, 77 insertions, 62 deletions
diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h index 3beb4da4ab41..f59f2dbdb25e 100644 --- a/fs/btrfs/ordered-data.h +++ b/fs/btrfs/ordered-data.h @@ -27,7 +27,7 @@ struct btrfs_ordered_sum { }; /* - * bits for the flags field: + * Bits for btrfs_ordered_extent::flags. * * BTRFS_ORDERED_IO_DONE is set when all of the blocks are written. * It is used to make sure metadata is inserted into the tree only once @@ -38,31 +38,54 @@ struct btrfs_ordered_sum { * IO is done and any metadata is inserted into the tree. */ enum { + /* + * Different types for ordered extents, one and only one of the 4 types + * need to be set when creating ordered extent. + * + * REGULAR: For regular non-compressed COW write + * NOCOW: For NOCOW write into existing non-hole extent + * PREALLOC: For NOCOW write into preallocated extent + * COMPRESSED: For compressed COW write + */ + BTRFS_ORDERED_REGULAR, + BTRFS_ORDERED_NOCOW, + BTRFS_ORDERED_PREALLOC, + BTRFS_ORDERED_COMPRESSED, + + /* + * Extra bit for direct io, can only be set for + * REGULAR/NOCOW/PREALLOC. No direct io for compressed extent. + */ + BTRFS_ORDERED_DIRECT, + + /* Extra status bits for ordered extents */ + /* set when all the pages are written */ BTRFS_ORDERED_IO_DONE, /* set when removed from the tree */ BTRFS_ORDERED_COMPLETE, - /* set when we want to write in place */ - BTRFS_ORDERED_NOCOW, - /* writing a zlib compressed extent */ - BTRFS_ORDERED_COMPRESSED, - /* set when writing to preallocated extent */ - BTRFS_ORDERED_PREALLOC, - /* set when we're doing DIO with this extent */ - BTRFS_ORDERED_DIRECT, /* We had an io error when writing this out */ BTRFS_ORDERED_IOERR, - /* - * indicates whether this ordered extent has done its due diligence in - * updating the isize - */ - BTRFS_ORDERED_UPDATED_ISIZE, /* Set when we have to truncate an extent */ BTRFS_ORDERED_TRUNCATED, - /* Regular IO for COW */ - BTRFS_ORDERED_REGULAR, + /* Used during fsync to track already logged extents */ + BTRFS_ORDERED_LOGGED, + /* We have already logged all the csums of the ordered extent */ + BTRFS_ORDERED_LOGGED_CSUM, + /* We wait for this extent to complete in the current transaction */ + BTRFS_ORDERED_PENDING, + /* BTRFS_IOC_ENCODED_WRITE */ + BTRFS_ORDERED_ENCODED, }; +/* BTRFS_ORDERED_* flags that specify the type of the extent. */ +#define BTRFS_ORDERED_TYPE_FLAGS ((1UL << BTRFS_ORDERED_REGULAR) | \ + (1UL << BTRFS_ORDERED_NOCOW) | \ + (1UL << BTRFS_ORDERED_PREALLOC) | \ + (1UL << BTRFS_ORDERED_COMPRESSED) | \ + (1UL << BTRFS_ORDERED_DIRECT) | \ + (1UL << BTRFS_ORDERED_ENCODED)) + struct btrfs_ordered_extent { /* logical offset in the file */ u64 file_offset; @@ -71,9 +94,11 @@ struct btrfs_ordered_extent { * These fields directly correspond to the same fields in * btrfs_file_extent_item. */ - u64 disk_bytenr; u64 num_bytes; + u64 ram_bytes; + u64 disk_bytenr; u64 disk_num_bytes; + u64 offset; /* number of bytes that still need writing */ u64 bytes_left; @@ -97,6 +122,9 @@ struct btrfs_ordered_extent { /* compression algorithm */ int compress_type; + /* Qgroup reserved space */ + int qgroup_rsv; + /* reference count */ refcount_t refs; @@ -106,12 +134,9 @@ struct btrfs_ordered_extent { /* list of checksums for insertion when the extent io is done */ struct list_head list; - /* If we need to wait on this to be done */ + /* used for fast fsyncs */ struct list_head log_list; - /* If the transaction needs to wait on this ordered extent */ - struct list_head trans_list; - /* used to wait for the BTRFS_ORDERED_COMPLETE bit */ wait_queue_head_t wait; @@ -126,20 +151,14 @@ struct btrfs_ordered_extent { struct completion completion; struct btrfs_work flush_work; struct list_head work_list; -}; -/* - * calculates the total size you need to allocate for an ordered sum - * structure spanning 'bytes' in the file - */ -static inline int btrfs_ordered_sum_size(struct btrfs_fs_info *fs_info, - unsigned long bytes) -{ - int num_sectors = (int)DIV_ROUND_UP(bytes, fs_info->sectorsize); - int csum_size = btrfs_super_csum_size(fs_info->super_copy); - - return sizeof(struct btrfs_ordered_sum) + num_sectors * csum_size; -} + /* + * Used to reverse-map physical address returned from ZONE_APPEND write + * command in a workqueue context + */ + u64 physical; + struct block_device *bdev; +}; static inline void btrfs_ordered_inode_tree_init(struct btrfs_ordered_inode_tree *t) @@ -149,51 +168,47 @@ btrfs_ordered_inode_tree_init(struct btrfs_ordered_inode_tree *t) t->last = NULL; } +int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent); + void btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry); -void btrfs_remove_ordered_extent(struct inode *inode, +void btrfs_remove_ordered_extent(struct btrfs_inode *btrfs_inode, struct btrfs_ordered_extent *entry); -int btrfs_dec_test_ordered_pending(struct inode *inode, - struct btrfs_ordered_extent **cached, - u64 file_offset, u64 io_size, int uptodate); -int btrfs_dec_test_first_ordered_pending(struct inode *inode, - struct btrfs_ordered_extent **cached, - u64 *file_offset, u64 io_size, - int uptodate); -int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset, - u64 disk_bytenr, u64 num_bytes, u64 disk_num_bytes, - int type); -int btrfs_add_ordered_extent_dio(struct inode *inode, u64 file_offset, - u64 disk_bytenr, u64 num_bytes, - u64 disk_num_bytes, int type); -int btrfs_add_ordered_extent_compress(struct inode *inode, u64 file_offset, - u64 disk_bytenr, u64 num_bytes, - u64 disk_num_bytes, int type, - int compress_type); +void btrfs_mark_ordered_io_finished(struct btrfs_inode *inode, + struct page *page, u64 file_offset, + u64 num_bytes, bool uptodate); +bool btrfs_dec_test_ordered_pending(struct btrfs_inode *inode, + struct btrfs_ordered_extent **cached, + u64 file_offset, u64 io_size); +int btrfs_add_ordered_extent(struct btrfs_inode *inode, u64 file_offset, + u64 num_bytes, u64 ram_bytes, u64 disk_bytenr, + u64 disk_num_bytes, u64 offset, unsigned flags, + int compress_type); void btrfs_add_ordered_sum(struct btrfs_ordered_extent *entry, struct btrfs_ordered_sum *sum); -struct btrfs_ordered_extent *btrfs_lookup_ordered_extent(struct inode *inode, +struct btrfs_ordered_extent *btrfs_lookup_ordered_extent(struct btrfs_inode *inode, u64 file_offset); -void btrfs_start_ordered_extent(struct inode *inode, - struct btrfs_ordered_extent *entry, int wait); +void btrfs_start_ordered_extent(struct btrfs_ordered_extent *entry, int wait); int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len); struct btrfs_ordered_extent * -btrfs_lookup_first_ordered_extent(struct inode * inode, u64 file_offset); +btrfs_lookup_first_ordered_extent(struct btrfs_inode *inode, u64 file_offset); +struct btrfs_ordered_extent *btrfs_lookup_first_ordered_range( + struct btrfs_inode *inode, u64 file_offset, u64 len); struct btrfs_ordered_extent *btrfs_lookup_ordered_range( struct btrfs_inode *inode, u64 file_offset, u64 len); -int btrfs_ordered_update_i_size(struct inode *inode, u64 offset, - struct btrfs_ordered_extent *ordered); -int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr, - u8 *sum, int len); +void btrfs_get_ordered_extents_for_logging(struct btrfs_inode *inode, + struct list_head *list); u64 btrfs_wait_ordered_extents(struct btrfs_root *root, u64 nr, const u64 range_start, const u64 range_len); void btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, u64 nr, const u64 range_start, const u64 range_len); -void btrfs_lock_and_flush_ordered_range(struct extent_io_tree *tree, - struct btrfs_inode *inode, u64 start, +void btrfs_lock_and_flush_ordered_range(struct btrfs_inode *inode, u64 start, u64 end, struct extent_state **cached_state); +bool btrfs_try_lock_ordered_range(struct btrfs_inode *inode, u64 start, u64 end); +int btrfs_split_ordered_extent(struct btrfs_ordered_extent *ordered, u64 pre, + u64 post); int __init ordered_data_init(void); void __cold ordered_data_exit(void); |