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btrfs: move basic block_group definitions to their own header
This is prep work for moving all of the block group cache code into its own file. Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> [ minor comment updates ] Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik
David Sterba
parent
478b4d9f01
commit
aac0023c21
154
fs/btrfs/block-group.h
Normal file
154
fs/btrfs/block-group.h
Normal file
@ -0,0 +1,154 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BTRFS_BLOCK_GROUP_H
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#define BTRFS_BLOCK_GROUP_H
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enum btrfs_disk_cache_state {
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BTRFS_DC_WRITTEN,
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BTRFS_DC_ERROR,
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BTRFS_DC_CLEAR,
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BTRFS_DC_SETUP,
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};
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struct btrfs_caching_control {
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struct list_head list;
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struct mutex mutex;
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wait_queue_head_t wait;
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struct btrfs_work work;
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struct btrfs_block_group_cache *block_group;
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u64 progress;
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refcount_t count;
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};
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/* Once caching_thread() finds this much free space, it will wake up waiters. */
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#define CACHING_CTL_WAKE_UP SZ_2M
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struct btrfs_block_group_cache {
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struct btrfs_key key;
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struct btrfs_block_group_item item;
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struct btrfs_fs_info *fs_info;
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struct inode *inode;
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spinlock_t lock;
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u64 pinned;
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u64 reserved;
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u64 delalloc_bytes;
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u64 bytes_super;
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u64 flags;
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u64 cache_generation;
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/*
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* If the free space extent count exceeds this number, convert the block
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* group to bitmaps.
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*/
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u32 bitmap_high_thresh;
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/*
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* If the free space extent count drops below this number, convert the
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* block group back to extents.
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*/
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u32 bitmap_low_thresh;
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/*
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* It is just used for the delayed data space allocation because
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* only the data space allocation and the relative metadata update
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* can be done cross the transaction.
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*/
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struct rw_semaphore data_rwsem;
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/* For raid56, this is a full stripe, without parity */
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unsigned long full_stripe_len;
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unsigned int ro;
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unsigned int iref:1;
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unsigned int has_caching_ctl:1;
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unsigned int removed:1;
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int disk_cache_state;
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/* Cache tracking stuff */
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int cached;
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struct btrfs_caching_control *caching_ctl;
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u64 last_byte_to_unpin;
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struct btrfs_space_info *space_info;
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/* Free space cache stuff */
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struct btrfs_free_space_ctl *free_space_ctl;
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/* Block group cache stuff */
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struct rb_node cache_node;
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/* For block groups in the same raid type */
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struct list_head list;
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/* Usage count */
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atomic_t count;
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/*
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* List of struct btrfs_free_clusters for this block group.
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* Today it will only have one thing on it, but that may change
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*/
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struct list_head cluster_list;
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/* For delayed block group creation or deletion of empty block groups */
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struct list_head bg_list;
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/* For read-only block groups */
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struct list_head ro_list;
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atomic_t trimming;
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/* For dirty block groups */
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struct list_head dirty_list;
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struct list_head io_list;
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struct btrfs_io_ctl io_ctl;
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/*
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* Incremented when doing extent allocations and holding a read lock
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* on the space_info's groups_sem semaphore.
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* Decremented when an ordered extent that represents an IO against this
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* block group's range is created (after it's added to its inode's
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* root's list of ordered extents) or immediately after the allocation
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* if it's a metadata extent or fallocate extent (for these cases we
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* don't create ordered extents).
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*/
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atomic_t reservations;
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/*
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* Incremented while holding the spinlock *lock* by a task checking if
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* it can perform a nocow write (incremented if the value for the *ro*
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* field is 0). Decremented by such tasks once they create an ordered
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* extent or before that if some error happens before reaching that step.
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* This is to prevent races between block group relocation and nocow
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* writes through direct IO.
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*/
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atomic_t nocow_writers;
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/* Lock for free space tree operations. */
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struct mutex free_space_lock;
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/*
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* Does the block group need to be added to the free space tree?
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* Protected by free_space_lock.
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*/
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int needs_free_space;
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/* Record locked full stripes for RAID5/6 block group */
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struct btrfs_full_stripe_locks_tree full_stripe_locks_root;
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};
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#ifdef CONFIG_BTRFS_DEBUG
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static inline int btrfs_should_fragment_free_space(
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struct btrfs_block_group_cache *block_group)
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{
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struct btrfs_fs_info *fs_info = block_group->fs_info;
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return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) &&
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block_group->flags & BTRFS_BLOCK_GROUP_METADATA) ||
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(btrfs_test_opt(fs_info, FRAGMENT_DATA) &&
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block_group->flags & BTRFS_BLOCK_GROUP_DATA);
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}
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#endif
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#endif /* BTRFS_BLOCK_GROUP_H */
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148
fs/btrfs/ctree.h
148
fs/btrfs/ctree.h
@ -39,6 +39,7 @@ struct btrfs_transaction;
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struct btrfs_pending_snapshot;
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struct btrfs_delayed_ref_root;
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struct btrfs_space_info;
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struct btrfs_block_group_cache;
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extern struct kmem_cache *btrfs_trans_handle_cachep;
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extern struct kmem_cache *btrfs_bit_radix_cachep;
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extern struct kmem_cache *btrfs_path_cachep;
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@ -439,26 +440,6 @@ enum btrfs_caching_type {
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BTRFS_CACHE_ERROR,
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};
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enum btrfs_disk_cache_state {
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BTRFS_DC_WRITTEN,
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BTRFS_DC_ERROR,
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BTRFS_DC_CLEAR,
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BTRFS_DC_SETUP,
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};
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struct btrfs_caching_control {
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struct list_head list;
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struct mutex mutex;
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wait_queue_head_t wait;
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struct btrfs_work work;
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struct btrfs_block_group_cache *block_group;
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u64 progress;
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refcount_t count;
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};
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/* Once caching_thread() finds this much free space, it will wake up waiters. */
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#define CACHING_CTL_WAKE_UP SZ_2M
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struct btrfs_io_ctl {
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void *cur, *orig;
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struct page *page;
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@ -481,120 +462,6 @@ struct btrfs_full_stripe_locks_tree {
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struct mutex lock;
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};
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struct btrfs_block_group_cache {
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struct btrfs_key key;
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struct btrfs_block_group_item item;
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struct btrfs_fs_info *fs_info;
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struct inode *inode;
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spinlock_t lock;
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u64 pinned;
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u64 reserved;
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u64 delalloc_bytes;
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u64 bytes_super;
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u64 flags;
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u64 cache_generation;
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/*
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* If the free space extent count exceeds this number, convert the block
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* group to bitmaps.
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*/
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u32 bitmap_high_thresh;
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/*
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* If the free space extent count drops below this number, convert the
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* block group back to extents.
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*/
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u32 bitmap_low_thresh;
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/*
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* It is just used for the delayed data space allocation because
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* only the data space allocation and the relative metadata update
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* can be done cross the transaction.
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*/
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struct rw_semaphore data_rwsem;
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/* for raid56, this is a full stripe, without parity */
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unsigned long full_stripe_len;
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unsigned int ro;
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unsigned int iref:1;
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unsigned int has_caching_ctl:1;
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unsigned int removed:1;
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int disk_cache_state;
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/* cache tracking stuff */
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int cached;
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struct btrfs_caching_control *caching_ctl;
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u64 last_byte_to_unpin;
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struct btrfs_space_info *space_info;
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/* free space cache stuff */
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struct btrfs_free_space_ctl *free_space_ctl;
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/* block group cache stuff */
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struct rb_node cache_node;
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/* for block groups in the same raid type */
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struct list_head list;
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/* usage count */
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atomic_t count;
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/* List of struct btrfs_free_clusters for this block group.
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* Today it will only have one thing on it, but that may change
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*/
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struct list_head cluster_list;
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/* For delayed block group creation or deletion of empty block groups */
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struct list_head bg_list;
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/* For read-only block groups */
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struct list_head ro_list;
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atomic_t trimming;
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/* For dirty block groups */
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struct list_head dirty_list;
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struct list_head io_list;
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struct btrfs_io_ctl io_ctl;
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/*
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* Incremented when doing extent allocations and holding a read lock
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* on the space_info's groups_sem semaphore.
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* Decremented when an ordered extent that represents an IO against this
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* block group's range is created (after it's added to its inode's
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* root's list of ordered extents) or immediately after the allocation
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* if it's a metadata extent or fallocate extent (for these cases we
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* don't create ordered extents).
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*/
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atomic_t reservations;
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/*
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* Incremented while holding the spinlock *lock* by a task checking if
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* it can perform a nocow write (incremented if the value for the *ro*
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* field is 0). Decremented by such tasks once they create an ordered
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* extent or before that if some error happens before reaching that step.
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* This is to prevent races between block group relocation and nocow
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* writes through direct IO.
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*/
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atomic_t nocow_writers;
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/* Lock for free space tree operations. */
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struct mutex free_space_lock;
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/*
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* Does the block group need to be added to the free space tree?
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* Protected by free_space_lock.
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*/
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int needs_free_space;
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/* Record locked full stripes for RAID5/6 block group */
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struct btrfs_full_stripe_locks_tree full_stripe_locks_root;
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};
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/* delayed seq elem */
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struct seq_list {
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struct list_head list;
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@ -1387,19 +1254,6 @@ static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
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btrfs_clear_opt(fs_info->mount_opt, opt); \
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}
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#ifdef CONFIG_BTRFS_DEBUG
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static inline int
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btrfs_should_fragment_free_space(struct btrfs_block_group_cache *block_group)
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{
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struct btrfs_fs_info *fs_info = block_group->fs_info;
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return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) &&
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block_group->flags & BTRFS_BLOCK_GROUP_METADATA) ||
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(btrfs_test_opt(fs_info, FRAGMENT_DATA) &&
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block_group->flags & BTRFS_BLOCK_GROUP_DATA);
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}
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#endif
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/*
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* Requests for changes that need to be done during transaction commit.
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*
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@ -40,6 +40,7 @@
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#include "compression.h"
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#include "tree-checker.h"
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#include "ref-verify.h"
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#include "block-group.h"
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#define BTRFS_SUPER_FLAG_SUPP (BTRFS_HEADER_FLAG_WRITTEN |\
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BTRFS_HEADER_FLAG_RELOC |\
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@ -32,6 +32,7 @@
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#include "space-info.h"
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#include "block-rsv.h"
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#include "delalloc-space.h"
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#include "block-group.h"
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#undef SCRAMBLE_DELAYED_REFS
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@ -20,6 +20,7 @@
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#include "volumes.h"
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#include "space-info.h"
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#include "delalloc-space.h"
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#include "block-group.h"
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#define BITS_PER_BITMAP (PAGE_SIZE * 8UL)
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#define MAX_CACHE_BYTES_PER_GIG SZ_32K
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@ -10,6 +10,7 @@
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#include "locking.h"
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#include "free-space-tree.h"
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#include "transaction.h"
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#include "block-group.h"
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static int __add_block_group_free_space(struct btrfs_trans_handle *trans,
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struct btrfs_block_group_cache *block_group,
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@ -6,6 +6,8 @@
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#ifndef BTRFS_FREE_SPACE_TREE_H
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#define BTRFS_FREE_SPACE_TREE_H
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struct btrfs_caching_control;
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/*
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* The default size for new free space bitmap items. The last bitmap in a block
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* group may be truncated, and none of the free space tree code assumes that
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@ -47,6 +47,7 @@
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#include "props.h"
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#include "qgroup.h"
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#include "delalloc-space.h"
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#include "block-group.h"
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struct btrfs_iget_args {
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struct btrfs_key *location;
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@ -45,6 +45,7 @@
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#include "compression.h"
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#include "space-info.h"
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#include "delalloc-space.h"
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#include "block-group.h"
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#ifdef CONFIG_64BIT
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/* If we have a 32-bit userspace and 64-bit kernel, then the UAPI
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@ -21,7 +21,7 @@
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#include "backref.h"
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#include "extent_io.h"
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#include "qgroup.h"
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#include "block-group.h"
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/* TODO XXX FIXME
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* - subvol delete -> delete when ref goes to 0? delete limits also?
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@ -14,6 +14,7 @@
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#include "disk-io.h"
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#include "transaction.h"
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#include "dev-replace.h"
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#include "block-group.h"
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#undef DEBUG
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@ -21,6 +21,7 @@
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#include "qgroup.h"
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#include "print-tree.h"
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#include "delalloc-space.h"
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#include "block-group.h"
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/*
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* backref_node, mapping_node and tree_block start with this
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@ -18,6 +18,7 @@
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#include "check-integrity.h"
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#include "rcu-string.h"
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#include "raid56.h"
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#include "block-group.h"
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/*
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* This is only the first step towards a full-features scrub. It reads all
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@ -8,6 +8,7 @@
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#include "ordered-data.h"
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#include "transaction.h"
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#include "math.h"
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#include "block-group.h"
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u64 btrfs_space_info_used(struct btrfs_space_info *s_info,
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bool may_use_included)
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@ -44,6 +44,7 @@
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#include "backref.h"
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#include "space-info.h"
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#include "tests/btrfs-tests.h"
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#include "block-group.h"
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#include "qgroup.h"
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#define CREATE_TRACE_POINTS
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@ -17,6 +17,7 @@
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#include "sysfs.h"
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#include "volumes.h"
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#include "space-info.h"
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#include "block-group.h"
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static inline struct btrfs_fs_info *to_fs_info(struct kobject *kobj);
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static inline struct btrfs_fs_devices *to_fs_devs(struct kobject *kobj);
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@ -15,6 +15,7 @@
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#include "../volumes.h"
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#include "../disk-io.h"
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#include "../qgroup.h"
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#include "../block-group.h"
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static struct vfsmount *test_mnt = NULL;
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@ -8,6 +8,7 @@
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#include "../ctree.h"
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#include "../disk-io.h"
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#include "../free-space-cache.h"
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#include "../block-group.h"
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#define BITS_PER_BITMAP (PAGE_SIZE * 8UL)
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@ -9,6 +9,7 @@
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#include "../disk-io.h"
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#include "../free-space-tree.h"
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#include "../transaction.h"
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#include "../block-group.h"
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struct free_space_extent {
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u64 start;
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@ -19,6 +19,7 @@
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#include "volumes.h"
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#include "dev-replace.h"
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#include "qgroup.h"
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#include "block-group.h"
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#define BTRFS_ROOT_TRANS_TAG 0
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||||
|
||||
|
||||
@ -29,6 +29,7 @@
|
||||
#include "sysfs.h"
|
||||
#include "tree-checker.h"
|
||||
#include "space-info.h"
|
||||
#include "block-group.h"
|
||||
|
||||
const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
|
||||
[BTRFS_RAID_RAID10] = {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user