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-rw-r--r--fs/btrfs/ctree.h105
1 files changed, 86 insertions, 19 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index d6dd49b51ba8..e795bf135e80 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -961,8 +961,8 @@ struct btrfs_dev_replace_item {
#define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4)
#define BTRFS_BLOCK_GROUP_DUP (1ULL << 5)
#define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6)
-#define BTRFS_BLOCK_GROUP_RAID5 (1 << 7)
-#define BTRFS_BLOCK_GROUP_RAID6 (1 << 8)
+#define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7)
+#define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8)
#define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE
enum btrfs_raid_types {
@@ -1102,6 +1102,18 @@ struct btrfs_space_info {
account */
/*
+ * 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 everytime we call
+ * btrfs_free_extent so it is a realtime count of what will be freed
+ * once the transaction is committed. It will be zero'ed everytime the
+ * transaction commits.
+ */
+ struct percpu_counter total_bytes_pinned;
+
+ /*
* we bump reservation progress every time we decrement
* bytes_reserved. This way people waiting for reservations
* know something good has happened and they can check
@@ -1437,25 +1449,22 @@ struct btrfs_fs_info {
atomic_t open_ioctl_trans;
/*
- * this is used by the balancing code to wait for all the pending
- * ordered extents
+ * this is used to protect the following list -- ordered_roots.
*/
- spinlock_t ordered_extent_lock;
+ spinlock_t ordered_root_lock;
/*
- * all of the data=ordered extents pending writeback
+ * all fs/file tree roots in which there are data=ordered extents
+ * pending writeback are added into this list.
+ *
* these can span multiple transactions and basically include
* every dirty data page that isn't from nodatacow
*/
- struct list_head ordered_extents;
+ struct list_head ordered_roots;
- spinlock_t delalloc_lock;
- /*
- * all of the inodes that have delalloc bytes. It is possible for
- * this list to be empty even when there is still dirty data=ordered
- * extents waiting to finish IO.
- */
- struct list_head delalloc_inodes;
+ spinlock_t delalloc_root_lock;
+ /* all fs/file tree roots that have delalloc inodes. */
+ struct list_head delalloc_roots;
/*
* there is a pool of worker threads for checksumming during writes
@@ -1498,8 +1507,6 @@ struct btrfs_fs_info {
int do_barriers;
int closing;
int log_root_recovering;
- int enospc_unlink;
- int trans_no_join;
u64 total_pinned;
@@ -1594,6 +1601,12 @@ struct btrfs_fs_info {
struct rb_root qgroup_tree;
spinlock_t qgroup_lock;
+ /*
+ * used to avoid frequently calling ulist_alloc()/ulist_free()
+ * when doing qgroup accounting, it must be protected by qgroup_lock.
+ */
+ struct ulist *qgroup_ulist;
+
/* protect user change for quota operations */
struct mutex qgroup_ioctl_lock;
@@ -1607,6 +1620,8 @@ struct btrfs_fs_info {
struct mutex qgroup_rescan_lock; /* protects the progress item */
struct btrfs_key qgroup_rescan_progress;
struct btrfs_workers qgroup_rescan_workers;
+ struct completion qgroup_rescan_completion;
+ struct btrfs_work qgroup_rescan_work;
/* filesystem state */
unsigned long fs_state;
@@ -1739,6 +1754,31 @@ struct btrfs_root {
int force_cow;
spinlock_t root_item_lock;
+ atomic_t refs;
+
+ spinlock_t delalloc_lock;
+ /*
+ * all of the inodes that have delalloc bytes. It is possible for
+ * this list to be empty even when there is still dirty data=ordered
+ * extents waiting to finish IO.
+ */
+ struct list_head delalloc_inodes;
+ struct list_head delalloc_root;
+ u64 nr_delalloc_inodes;
+ /*
+ * this is used by the balancing code to wait for all the pending
+ * ordered extents
+ */
+ spinlock_t ordered_extent_lock;
+
+ /*
+ * all of the data=ordered extents pending writeback
+ * these can span multiple transactions and basically include
+ * every dirty data page that isn't from nodatacow
+ */
+ struct list_head ordered_extents;
+ struct list_head ordered_root;
+ u64 nr_ordered_extents;
};
struct btrfs_ioctl_defrag_range_args {
@@ -3028,6 +3068,8 @@ static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root,
num_items;
}
+int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root);
void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
struct btrfs_root *root, unsigned long count);
@@ -3039,6 +3081,8 @@ int btrfs_pin_extent(struct btrfs_root *root,
u64 bytenr, u64 num, int reserved);
int btrfs_pin_extent_for_log_replay(struct btrfs_root *root,
u64 bytenr, u64 num_bytes);
+int btrfs_exclude_logged_extents(struct btrfs_root *root,
+ struct extent_buffer *eb);
int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 objectid, u64 offset, u64 bytenr);
@@ -3155,6 +3199,9 @@ int btrfs_block_rsv_refill(struct btrfs_root *root,
int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
struct btrfs_block_rsv *dst_rsv,
u64 num_bytes);
+int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,
+ struct btrfs_block_rsv *dest, u64 num_bytes,
+ int min_factor);
void btrfs_block_rsv_release(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 num_bytes);
@@ -3311,6 +3358,18 @@ static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info)
smp_mb();
return fs_info->closing;
}
+
+/*
+ * If we remount the fs to be R/O or umount the fs, the cleaner needn't do
+ * anything except sleeping. This function is used to check the status of
+ * the fs.
+ */
+static inline int btrfs_need_cleaner_sleep(struct btrfs_root *root)
+{
+ return (root->fs_info->sb->s_flags & MS_RDONLY ||
+ btrfs_fs_closing(root->fs_info));
+}
+
static inline void free_fs_info(struct btrfs_fs_info *fs_info)
{
kfree(fs_info->balance_ctl);
@@ -3357,9 +3416,9 @@ int __must_check btrfs_update_root(struct btrfs_trans_handle *trans,
struct btrfs_root_item *item);
void btrfs_read_root_item(struct extent_buffer *eb, int slot,
struct btrfs_root_item *item);
-int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct
- btrfs_root_item *item, struct btrfs_key *key);
-int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid);
+int btrfs_find_root(struct btrfs_root *root, struct btrfs_key *search_key,
+ struct btrfs_path *path, struct btrfs_root_item *root_item,
+ struct btrfs_key *root_key);
int btrfs_find_orphan_roots(struct btrfs_root *tree_root);
void btrfs_set_root_node(struct btrfs_root_item *item,
struct extent_buffer *node);
@@ -3493,6 +3552,10 @@ void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work);
struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page,
size_t pg_offset, u64 start, u64 len,
int create);
+noinline int can_nocow_extent(struct btrfs_trans_handle *trans,
+ struct inode *inode, u64 offset, u64 *len,
+ u64 *orig_start, u64 *orig_block_len,
+ u64 *ram_bytes);
/* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */
#if defined(ClearPageFsMisc) && !defined(ClearPageChecked)
@@ -3530,6 +3593,8 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
u32 min_type);
int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput);
+int btrfs_start_all_delalloc_inodes(struct btrfs_fs_info *fs_info,
+ int delay_iput);
int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end,
struct extent_state **cached_state);
int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,
@@ -3814,6 +3879,8 @@ int btrfs_quota_enable(struct btrfs_trans_handle *trans,
int btrfs_quota_disable(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info);
+void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info);
+int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info);
int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 src, u64 dst);
int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans,