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-rw-r--r--fs/btrfs/ctree.h73
1 files changed, 50 insertions, 23 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 2c1a42ca519..bc96c03dd25 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -351,6 +351,7 @@ static inline unsigned long btrfs_chunk_item_size(int num_stripes)
#define BTRFS_FS_STATE_ERROR 0
#define BTRFS_FS_STATE_REMOUNTING 1
#define BTRFS_FS_STATE_TRANS_ABORTED 2
+#define BTRFS_FS_STATE_DEV_REPLACING 3
/* Super block flags */
/* Errors detected */
@@ -1489,6 +1490,7 @@ struct btrfs_fs_info {
*/
struct list_head ordered_roots;
+ struct mutex delalloc_root_mutex;
spinlock_t delalloc_root_lock;
/* all fs/file tree roots that have delalloc inodes. */
struct list_head delalloc_roots;
@@ -1503,28 +1505,27 @@ struct btrfs_fs_info {
* A third pool does submit_bio to avoid deadlocking with the other
* two
*/
- struct btrfs_workers generic_worker;
- struct btrfs_workers workers;
- struct btrfs_workers delalloc_workers;
- struct btrfs_workers flush_workers;
- struct btrfs_workers endio_workers;
- struct btrfs_workers endio_meta_workers;
- struct btrfs_workers endio_raid56_workers;
- struct btrfs_workers rmw_workers;
- struct btrfs_workers endio_meta_write_workers;
- struct btrfs_workers endio_write_workers;
- struct btrfs_workers endio_freespace_worker;
- struct btrfs_workers submit_workers;
- struct btrfs_workers caching_workers;
- struct btrfs_workers readahead_workers;
+ struct btrfs_workqueue *workers;
+ struct btrfs_workqueue *delalloc_workers;
+ struct btrfs_workqueue *flush_workers;
+ struct btrfs_workqueue *endio_workers;
+ struct btrfs_workqueue *endio_meta_workers;
+ struct btrfs_workqueue *endio_raid56_workers;
+ struct btrfs_workqueue *rmw_workers;
+ struct btrfs_workqueue *endio_meta_write_workers;
+ struct btrfs_workqueue *endio_write_workers;
+ struct btrfs_workqueue *endio_freespace_worker;
+ struct btrfs_workqueue *submit_workers;
+ struct btrfs_workqueue *caching_workers;
+ struct btrfs_workqueue *readahead_workers;
/*
* fixup workers take dirty pages that didn't properly go through
* the cow mechanism and make them safe to write. It happens
* for the sys_munmap function call path
*/
- struct btrfs_workers fixup_workers;
- struct btrfs_workers delayed_workers;
+ struct btrfs_workqueue *fixup_workers;
+ struct btrfs_workqueue *delayed_workers;
struct task_struct *transaction_kthread;
struct task_struct *cleaner_kthread;
int thread_pool_size;
@@ -1604,9 +1605,9 @@ struct btrfs_fs_info {
atomic_t scrub_cancel_req;
wait_queue_head_t scrub_pause_wait;
int scrub_workers_refcnt;
- struct btrfs_workers scrub_workers;
- struct btrfs_workers scrub_wr_completion_workers;
- struct btrfs_workers scrub_nocow_workers;
+ struct btrfs_workqueue *scrub_workers;
+ struct btrfs_workqueue *scrub_wr_completion_workers;
+ struct btrfs_workqueue *scrub_nocow_workers;
#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
u32 check_integrity_print_mask;
@@ -1647,7 +1648,7 @@ struct btrfs_fs_info {
/* qgroup rescan items */
struct mutex qgroup_rescan_lock; /* protects the progress item */
struct btrfs_key qgroup_rescan_progress;
- struct btrfs_workers qgroup_rescan_workers;
+ struct btrfs_workqueue *qgroup_rescan_workers;
struct completion qgroup_rescan_completion;
struct btrfs_work qgroup_rescan_work;
@@ -1674,10 +1675,18 @@ struct btrfs_fs_info {
atomic_t mutually_exclusive_operation_running;
+ struct percpu_counter bio_counter;
+ wait_queue_head_t replace_wait;
+
struct semaphore uuid_tree_rescan_sem;
unsigned int update_uuid_tree_gen:1;
};
+struct btrfs_subvolume_writers {
+ struct percpu_counter counter;
+ wait_queue_head_t wait;
+};
+
/*
* in ram representation of the tree. extent_root is used for all allocations
* and for the extent tree extent_root root.
@@ -1714,11 +1723,15 @@ struct btrfs_root {
struct mutex log_mutex;
wait_queue_head_t log_writer_wait;
wait_queue_head_t log_commit_wait[2];
+ struct list_head log_ctxs[2];
atomic_t log_writers;
atomic_t log_commit[2];
atomic_t log_batch;
- unsigned long log_transid;
- unsigned long last_log_commit;
+ int log_transid;
+ /* No matter the commit succeeds or not*/
+ int log_transid_committed;
+ /* Just be updated when the commit succeeds. */
+ int last_log_commit;
pid_t log_start_pid;
bool log_multiple_pids;
@@ -1793,6 +1806,7 @@ struct btrfs_root {
spinlock_t root_item_lock;
atomic_t refs;
+ struct mutex delalloc_mutex;
spinlock_t delalloc_lock;
/*
* all of the inodes that have delalloc bytes. It is possible for
@@ -1802,6 +1816,8 @@ struct btrfs_root {
struct list_head delalloc_inodes;
struct list_head delalloc_root;
u64 nr_delalloc_inodes;
+
+ struct mutex ordered_extent_mutex;
/*
* this is used by the balancing code to wait for all the pending
* ordered extents
@@ -1822,6 +1838,8 @@ struct btrfs_root {
* manipulation with the read-only status via SUBVOL_SETFLAGS
*/
int send_in_progress;
+ struct btrfs_subvolume_writers *subv_writers;
+ atomic_t will_be_snapshoted;
};
struct btrfs_ioctl_defrag_range_args {
@@ -3346,6 +3364,9 @@ int btrfs_init_space_info(struct btrfs_fs_info *fs_info);
int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int __get_raid_index(u64 flags);
+
+int btrfs_start_nocow_write(struct btrfs_root *root);
+void btrfs_end_nocow_write(struct btrfs_root *root);
/* ctree.c */
int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key,
int level, int *slot);
@@ -3723,7 +3744,8 @@ 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_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput);
+int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput,
+ int nr);
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,
@@ -4005,6 +4027,11 @@ int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info,
int btrfs_scrub_progress(struct btrfs_root *root, u64 devid,
struct btrfs_scrub_progress *progress);
+/* dev-replace.c */
+void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info);
+void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info);
+void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info);
+
/* reada.c */
struct reada_control {
struct btrfs_root *root; /* tree to prefetch */