struct btrfs_transaction;
struct btrfs_pending_snapshot;
struct btrfs_delayed_ref_root;
+struct btrfs_space_info;
extern struct kmem_cache *btrfs_trans_handle_cachep;
extern struct kmem_cache *btrfs_bit_radix_cachep;
extern struct kmem_cache *btrfs_path_cachep;
struct list_head list;
};
-struct btrfs_space_info {
- spinlock_t lock;
-
- u64 total_bytes; /* total bytes in the space,
- this doesn't take mirrors into account */
- u64 bytes_used; /* total bytes used,
- this doesn't take mirrors into account */
- u64 bytes_pinned; /* total bytes pinned, will be freed when the
- transaction finishes */
- u64 bytes_reserved; /* total bytes the allocator has reserved for
- current allocations */
- u64 bytes_may_use; /* number of bytes that may be used for
- delalloc/allocations */
- u64 bytes_readonly; /* total bytes that are read only */
-
- u64 max_extent_size; /* This will hold the maximum extent size of
- the space info if we had an ENOSPC in the
- allocator. */
-
- unsigned int full:1; /* indicates that we cannot allocate any more
- chunks for this space */
- unsigned int chunk_alloc:1; /* set if we are allocating a chunk */
-
- unsigned int flush:1; /* set if we are trying to make space */
-
- unsigned int force_alloc; /* set if we need to force a chunk
- alloc for this space */
-
- u64 disk_used; /* total bytes used on disk */
- u64 disk_total; /* total bytes on disk, takes mirrors into
- account */
-
- u64 flags;
-
- /*
- * bytes_pinned is kept in line with what is actually pinned, as in
- * we've called update_block_group and dropped the bytes_used counter
- * and increased the bytes_pinned counter. However this means that
- * bytes_pinned does not reflect the bytes that will be pinned once the
- * delayed refs are flushed, so this counter is inc'ed every time we
- * call btrfs_free_extent so it is a realtime count of what will be
- * freed once the transaction is committed. It will be zeroed every
- * time the transaction commits.
- */
- struct percpu_counter total_bytes_pinned;
-
- struct list_head list;
- /* Protected by the spinlock 'lock'. */
- struct list_head ro_bgs;
- struct list_head priority_tickets;
- struct list_head tickets;
- /*
- * tickets_id just indicates the next ticket will be handled, so note
- * it's not stored per ticket.
- */
- u64 tickets_id;
-
- struct rw_semaphore groups_sem;
- /* for block groups in our same type */
- struct list_head block_groups[BTRFS_NR_RAID_TYPES];
- wait_queue_head_t wait;
-
- struct kobject kobj;
- struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES];
-};
-
/*
* Types of block reserves
*/
return (u64) crc32c(parent_objectid, name, len);
}
-static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info)
-{
- return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) &&
- (space_info->flags & BTRFS_BLOCK_GROUP_DATA));
-}
-
static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping)
{
return mapping_gfp_constraint(mapping, ~__GFP_FS);
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef BTRFS_SPACE_INFO_H
+#define BTRFS_SPACE_INFO_H
+
+struct btrfs_space_info {
+ spinlock_t lock;
+
+ u64 total_bytes; /* total bytes in the space,
+ this doesn't take mirrors into account */
+ u64 bytes_used; /* total bytes used,
+ this doesn't take mirrors into account */
+ u64 bytes_pinned; /* total bytes pinned, will be freed when the
+ transaction finishes */
+ u64 bytes_reserved; /* total bytes the allocator has reserved for
+ current allocations */
+ u64 bytes_may_use; /* number of bytes that may be used for
+ delalloc/allocations */
+ u64 bytes_readonly; /* total bytes that are read only */
+
+ u64 max_extent_size; /* This will hold the maximum extent size of
+ the space info if we had an ENOSPC in the
+ allocator. */
+
+ unsigned int full:1; /* indicates that we cannot allocate any more
+ chunks for this space */
+ unsigned int chunk_alloc:1; /* set if we are allocating a chunk */
+
+ unsigned int flush:1; /* set if we are trying to make space */
+
+ unsigned int force_alloc; /* set if we need to force a chunk
+ alloc for this space */
+
+ u64 disk_used; /* total bytes used on disk */
+ u64 disk_total; /* total bytes on disk, takes mirrors into
+ account */
+
+ u64 flags;
+
+ /*
+ * bytes_pinned is kept in line with what is actually pinned, as in
+ * we've called update_block_group and dropped the bytes_used counter
+ * and increased the bytes_pinned counter. However this means that
+ * bytes_pinned does not reflect the bytes that will be pinned once the
+ * delayed refs are flushed, so this counter is inc'ed every time we
+ * call btrfs_free_extent so it is a realtime count of what will be
+ * freed once the transaction is committed. It will be zeroed every
+ * time the transaction commits.
+ */
+ struct percpu_counter total_bytes_pinned;
+
+ struct list_head list;
+ /* Protected by the spinlock 'lock'. */
+ struct list_head ro_bgs;
+ struct list_head priority_tickets;
+ struct list_head tickets;
+ /*
+ * tickets_id just indicates the next ticket will be handled, so note
+ * it's not stored per ticket.
+ */
+ u64 tickets_id;
+
+ struct rw_semaphore groups_sem;
+ /* for block groups in our same type */
+ struct list_head block_groups[BTRFS_NR_RAID_TYPES];
+ wait_queue_head_t wait;
+
+ struct kobject kobj;
+ struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES];
+};
+
+static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info)
+{
+ return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) &&
+ (space_info->flags & BTRFS_BLOCK_GROUP_DATA));
+}
+
+#endif /* BTRFS_SPACE_INFO_H */
projects / openwrt / staging / blogic.git / commitdiff