Thanks,
-Eric
Signed-off-by: Eric Sandeen <sand...@redhat.com>
---
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 8bb4aa1..92c1ede 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2133,6 +2133,208 @@ void btrfs_free_fs_roots(struct btrfs_fs_info *fs_info)
}
}
+static void btrfs_qgroup_init(struct btrfs_fs_info *fs_info)
+{
+ spin_lock_init(&fs_info->qgroup_lock);
+ mutex_init(&fs_info->qgroup_ioctl_lock);
+ fs_info->qgroup_tree = RB_ROOT;
+ fs_info->qgroup_op_tree = RB_ROOT;
+ INIT_LIST_HEAD(&fs_info->dirty_qgroups);
+ fs_info->qgroup_seq = 1;
+ fs_info->quota_enabled = 0;
+ fs_info->pending_quota_state = 0;
+ fs_info->qgroup_ulist = NULL;
+ mutex_init(&fs_info->qgroup_rescan_lock);
+}
+
+static void btrfs_dev_replace_init(struct btrfs_fs_info *fs_info)
+{
+ fs_info->dev_replace.lock_owner = 0;
+ atomic_set(&fs_info->dev_replace.nesting_level, 0);
+ mutex_init(&fs_info->dev_replace.lock_finishing_cancel_unmount);
+ mutex_init(&fs_info->dev_replace.lock_management_lock);
+ mutex_init(&fs_info->dev_replace.lock);
+}
+
+static void btrfs_scrub_init(struct btrfs_fs_info *fs_info)
+{
+ mutex_init(&fs_info->scrub_lock);
+ atomic_set(&fs_info->scrubs_running, 0);
+ atomic_set(&fs_info->scrub_pause_req, 0);
+ atomic_set(&fs_info->scrubs_paused, 0);
+ atomic_set(&fs_info->scrub_cancel_req, 0);
+ init_waitqueue_head(&fs_info->replace_wait);
+ init_waitqueue_head(&fs_info->scrub_pause_wait);
+ fs_info->scrub_workers_refcnt = 0;
+}
+
+static void btrfs_balance_init(struct btrfs_fs_info *fs_info)
+{
+ spin_lock_init(&fs_info->balance_lock);
+ mutex_init(&fs_info->balance_mutex);
+ atomic_set(&fs_info->balance_running, 0);
+ atomic_set(&fs_info->balance_pause_req, 0);
+ atomic_set(&fs_info->balance_cancel_req, 0);
+ fs_info->balance_ctl = NULL;
+ init_waitqueue_head(&fs_info->balance_wait_q);
+}
+
+static void btrfs_btree_inode_init(struct btrfs_fs_info *fs_info)
+{
+ fs_info->btree_inode->i_ino = BTRFS_BTREE_INODE_OBJECTID;
+ set_nlink(fs_info->btree_inode, 1);
+ /*
+ * we set the i_size on the btree inode to the max possible int.
+ * the real end of the address space is determined by all of
+ * the devices in the system
+ */
+ fs_info->btree_inode->i_size = OFFSET_MAX;
+ fs_info->btree_inode->i_mapping->a_ops = &btree_aops;
+ fs_info->btree_inode->i_mapping->backing_dev_info = &fs_info->bdi;
+
+ RB_CLEAR_NODE(&BTRFS_I(fs_info->btree_inode)->rb_node);
+ extent_io_tree_init(&BTRFS_I(fs_info->btree_inode)->io_tree,
+ fs_info->btree_inode->i_mapping);
+ BTRFS_I(fs_info->btree_inode)->io_tree.track_uptodate = 0;
+ extent_map_tree_init(&BTRFS_I(fs_info->btree_inode)->extent_tree);
+
+ BTRFS_I(fs_info->btree_inode)->io_tree.ops = &btree_extent_io_ops;
+
+ memset(&BTRFS_I(fs_info->btree_inode)->location, 0,
+ sizeof(struct btrfs_key));
+ set_bit(BTRFS_INODE_DUMMY,
+ &BTRFS_I(fs_info->btree_inode)->runtime_flags);
+ btrfs_insert_inode_hash(fs_info->btree_inode);
+}
+
+static int btrfs_alloc_workqueues(struct btrfs_fs_info *fs_info,
+ struct btrfs_fs_devices *fs_devices,
+ int flags)
+{
+ int max_active = fs_info->thread_pool_size;
+
+ fs_info->workers =
+ btrfs_alloc_workqueue("worker", flags | WQ_HIGHPRI,
+ max_active, 16);
+ fs_info->delalloc_workers =
+ btrfs_alloc_workqueue("delalloc", flags, max_active, 2);
+
+ fs_info->flush_workers =
+ btrfs_alloc_workqueue("flush_delalloc", flags, max_active, 0);
+
+ fs_info->caching_workers =
+ btrfs_alloc_workqueue("cache", flags, max_active, 0);
+
+ /*
+ * a higher idle thresh on the submit workers makes it much more
+ * likely that bios will be send down in a sane order to the
+ * devices
+ */
+ fs_info->submit_workers =
+ btrfs_alloc_workqueue("submit", flags,
+ min_t(u64, fs_devices->num_devices,
+ max_active), 64);
+ fs_info->fixup_workers =
+ btrfs_alloc_workqueue("fixup", flags, 1, 0);
+ /*
+ * endios are largely parallel and should have a very
+ * low idle thresh
+ */
+ fs_info->endio_workers =
+ btrfs_alloc_workqueue("endio", flags, max_active, 4);
+ fs_info->endio_meta_workers =
+ btrfs_alloc_workqueue("endio-meta", flags, max_active, 4);
+ fs_info->endio_meta_write_workers =
+ btrfs_alloc_workqueue("endio-meta-write", flags, max_active, 2);
+ fs_info->endio_raid56_workers =
+ btrfs_alloc_workqueue("endio-raid56", flags, max_active, 4);
+ fs_info->rmw_workers =
+ btrfs_alloc_workqueue("rmw", flags, max_active, 2);
+ fs_info->endio_write_workers =
+ btrfs_alloc_workqueue("endio-write", flags, max_active, 2);
+ fs_info->endio_freespace_worker =
+ btrfs_alloc_workqueue("freespace-write", flags, max_active, 0);
+ fs_info->delayed_workers =
+ btrfs_alloc_workqueue("delayed-meta", flags, max_active, 0);
+ fs_info->readahead_workers =
+ btrfs_alloc_workqueue("readahead", flags, max_active, 2);
+ fs_info->qgroup_rescan_workers =
+ btrfs_alloc_workqueue("qgroup-rescan", flags, 1, 0);
+ fs_info->extent_workers =
+ btrfs_alloc_workqueue("extent-refs", flags,
+ min_t(u64, fs_devices->num_devices,
+ max_active), 8);
+
+ if (!(fs_info->workers && fs_info->delalloc_workers &&
+ fs_info->submit_workers && fs_info->flush_workers &&
+ fs_info->endio_workers && fs_info->endio_meta_workers &&
+ fs_info->endio_meta_write_workers &&
+ fs_info->endio_write_workers && fs_info->endio_raid56_workers &&
+ fs_info->endio_freespace_worker && fs_info->rmw_workers &&
+ fs_info->caching_workers && fs_info->readahead_workers &&
+ fs_info->fixup_workers && fs_info->delayed_workers &&
+ fs_info->fixup_workers && fs_info->extent_workers &&
+ fs_info->qgroup_rescan_workers)) {
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int btrfs_replay_log(struct btrfs_fs_info *fs_info)
+{
+ int ret;
+ u32 blocksize;
+ struct btrfs_root *tree_root = fs_info->tree_root;
+ struct btrfs_root *log_tree_root;
+ struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
+ struct btrfs_super_block *disk_super = fs_info->super_copy;
+ u64 bytenr = btrfs_super_log_root(disk_super);
+
+ if (fs_devices->rw_devices == 0) {
+ printk(KERN_WARNING "BTRFS: log replay required "
+ "on RO media\n");
+ return -EIO;
+ }
+ blocksize = btrfs_level_size(tree_root,
+ btrfs_super_log_root_level(disk_super));
+
+ log_tree_root = btrfs_alloc_root(fs_info);
+ if (!log_tree_root)
+ return -ENOMEM;
+
+ __setup_root(tree_root->nodesize, tree_root->leafsize,
+ tree_root->sectorsize, tree_root->stripesize,
+ log_tree_root, fs_info, BTRFS_TREE_LOG_OBJECTID);
+
+ log_tree_root->node = read_tree_block(tree_root, bytenr,
+ blocksize,
+ fs_info->generation + 1);
+ if (!log_tree_root->node ||
+ !extent_buffer_uptodate(log_tree_root->node)) {
+ printk(KERN_ERR "BTRFS: failed to read log tree\n");
+ free_extent_buffer(log_tree_root->node);
+ kfree(log_tree_root);
+ return -EIO;
+ }
+ /* returns with log_tree_root freed on success */
+ ret = btrfs_recover_log_trees(log_tree_root);
+ if (ret) {
+ btrfs_error(tree_root->fs_info, ret,
+ "Failed to recover log tree");
+ free_extent_buffer(log_tree_root->node);
+ kfree(log_tree_root);
+ return ret;
+ }
+
+ if (fs_info->sb->s_flags & MS_RDONLY) {
+ ret = btrfs_commit_super(tree_root);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
int open_ctree(struct super_block *sb,
struct btrfs_fs_devices *fs_devices,
char *options)
@@ -2155,12 +2357,10 @@ int open_ctree(struct super_block *sb,
struct btrfs_root *dev_root;
struct btrfs_root *quota_root;
struct btrfs_root *uuid_root;
- struct btrfs_root *log_tree_root;
int ret;
- int err = -EINVAL;
+ int err;
int num_backups_tried = 0;
int backup_index = 0;
- int max_active;
int flags = WQ_MEM_RECLAIM | WQ_FREEZABLE | WQ_UNBOUND;
bool create_uuid_tree;
bool check_uuid_tree;
@@ -2172,37 +2372,28 @@ int open_ctree(struct super_block *sb,
goto fail;
}
- ret = init_srcu_struct(&fs_info->subvol_srcu);
- if (ret) {
- err = ret;
+ err = init_srcu_struct(&fs_info->subvol_srcu);
+ if (err)
goto fail;
- }
- ret = setup_bdi(fs_info, &fs_info->bdi);
- if (ret) {
- err = ret;
+ err = setup_bdi(fs_info, &fs_info->bdi);
+ if (err)
goto fail_srcu;
- }
- ret = percpu_counter_init(&fs_info->dirty_metadata_bytes, 0);
- if (ret) {
- err = ret;
+ err = percpu_counter_init(&fs_info->dirty_metadata_bytes, 0);
+ if (err)
goto fail_bdi;
- }
+
fs_info->dirty_metadata_batch = PAGE_CACHE_SIZE *
(1 + ilog2(nr_cpu_ids));
- ret = percpu_counter_init(&fs_info->delalloc_bytes, 0);
- if (ret) {
- err = ret;
+ err = percpu_counter_init(&fs_info->delalloc_bytes, 0);
+ if (err)
goto fail_dirty_metadata_bytes;
- }
- ret = percpu_counter_init(&fs_info->bio_counter, 0);
- if (ret) {
- err = ret;
+ err = percpu_counter_init(&fs_info->bio_counter, 0);
+ if (err)
goto fail_delalloc_bytes;
- }
fs_info->btree_inode = new_inode(sb);
if (!fs_info->btree_inode) {
@@ -2263,9 +2454,11 @@ int open_ctree(struct super_block *sb,
fs_info->tree_mod_log = RB_ROOT;
fs_info->commit_interval = BTRFS_DEFAULT_COMMIT_INTERVAL;
fs_info->avg_delayed_ref_runtime = div64_u64(NSEC_PER_SEC, 64);
+{
/* readahead state */
INIT_RADIX_TREE(&fs_info->reada_tree, GFP_NOFS & ~__GFP_WAIT);
spin_lock_init(&fs_info->reada_lock);
+}
fs_info->thread_pool_size = min_t(unsigned long,
num_online_cpus() + 2, 8);
@@ -2280,56 +2473,22 @@ int open_ctree(struct super_block *sb,
}
btrfs_init_delayed_root(fs_info->delayed_root);
- mutex_init(&fs_info->scrub_lock);
- atomic_set(&fs_info->scrubs_running, 0);
- atomic_set(&fs_info->scrub_pause_req, 0);
- atomic_set(&fs_info->scrubs_paused, 0);
- atomic_set(&fs_info->scrub_cancel_req, 0);
- init_waitqueue_head(&fs_info->replace_wait);
- init_waitqueue_head(&fs_info->scrub_pause_wait);
- fs_info->scrub_workers_refcnt = 0;
+ btrfs_scrub_init(fs_info);
+
#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
fs_info->check_integrity_print_mask = 0;
#endif
+ btrfs_balance_init(fs_info);
- spin_lock_init(&fs_info->balance_lock);
- mutex_init(&fs_info->balance_mutex);
- atomic_set(&fs_info->balance_running, 0);
- atomic_set(&fs_info->balance_pause_req, 0);
- atomic_set(&fs_info->balance_cancel_req, 0);
- fs_info->balance_ctl = NULL;
- init_waitqueue_head(&fs_info->balance_wait_q);
btrfs_init_async_reclaim_work(&fs_info->async_reclaim_work);
sb->s_blocksize = 4096;
sb->s_blocksize_bits = blksize_bits(4096);
sb->s_bdi = &fs_info->bdi;
- fs_info->btree_inode->i_ino = BTRFS_BTREE_INODE_OBJECTID;
- set_nlink(fs_info->btree_inode, 1);
- /*
- * we set the i_size on the btree inode to the max possible int.
- * the real end of the address space is determined by all of
- * the devices in the system
- */
- fs_info->btree_inode->i_size = OFFSET_MAX;
- fs_info->btree_inode->i_mapping->a_ops = &btree_aops;
- fs_info->btree_inode->i_mapping->backing_dev_info = &fs_info->bdi;
-
- RB_CLEAR_NODE(&BTRFS_I(fs_info->btree_inode)->rb_node);
- extent_io_tree_init(&BTRFS_I(fs_info->btree_inode)->io_tree,
- fs_info->btree_inode->i_mapping);
- BTRFS_I(fs_info->btree_inode)->io_tree.track_uptodate = 0;
- extent_map_tree_init(&BTRFS_I(fs_info->btree_inode)->extent_tree);
-
- BTRFS_I(fs_info->btree_inode)->io_tree.ops = &btree_extent_io_ops;
-
+ /* XXX move up? */
+ btrfs_btree_inode_init(fs_info);
BTRFS_I(fs_info->btree_inode)->root = tree_root;
- memset(&BTRFS_I(fs_info->btree_inode)->location, 0,
- sizeof(struct btrfs_key));
- set_bit(BTRFS_INODE_DUMMY,
- &BTRFS_I(fs_info->btree_inode)->runtime_flags);
- btrfs_insert_inode_hash(fs_info->btree_inode);
spin_lock_init(&fs_info->block_group_cache_lock);
fs_info->block_group_cache_tree = RB_ROOT;
@@ -2342,7 +2501,6 @@ int open_ctree(struct super_block *sb,
fs_info->pinned_extents = &fs_info->freed_extents[0];
fs_info->do_barriers = 1;
-
mutex_init(&fs_info->ordered_operations_mutex);
mutex_init(&fs_info->ordered_extent_flush_mutex);
mutex_init(&fs_info->tree_log_mutex);
@@ -2354,22 +2512,9 @@ int open_ctree(struct super_block *sb,
init_rwsem(&fs_info->cleanup_work_sem);
init_rwsem(&fs_info->subvol_sem);
sema_init(&fs_info->uuid_tree_rescan_sem, 1);
- fs_info->dev_replace.lock_owner = 0;
- atomic_set(&fs_info->dev_replace.nesting_level, 0);
- mutex_init(&fs_info->dev_replace.lock_finishing_cancel_unmount);
- mutex_init(&fs_info->dev_replace.lock_management_lock);
- mutex_init(&fs_info->dev_replace.lock);
- spin_lock_init(&fs_info->qgroup_lock);
- mutex_init(&fs_info->qgroup_ioctl_lock);
- fs_info->qgroup_tree = RB_ROOT;
- fs_info->qgroup_op_tree = RB_ROOT;
- INIT_LIST_HEAD(&fs_info->dirty_qgroups);
- fs_info->qgroup_seq = 1;
- fs_info->quota_enabled = 0;
- fs_info->pending_quota_state = 0;
- fs_info->qgroup_ulist = NULL;
- mutex_init(&fs_info->qgroup_rescan_lock);
+ btrfs_dev_replace_init(fs_info);
+ btrfs_qgroup_init(fs_info);
btrfs_init_free_cluster(&fs_info->meta_alloc_cluster);
btrfs_init_free_cluster(&fs_info->data_alloc_cluster);
@@ -2379,11 +2524,9 @@ int open_ctree(struct super_block *sb,
init_waitqueue_head(&fs_info->transaction_blocked_wait);
init_waitqueue_head(&fs_info->async_submit_wait);
- ret = btrfs_alloc_stripe_hash_table(fs_info);
- if (ret) {
- err = ret;
+ err = btrfs_alloc_stripe_hash_table(fs_info);
+ if (err)
goto fail_alloc;
- }
__setup_root(4096, 4096, 4096, 4096, tree_root,
fs_info, BTRFS_ROOT_TREE_OBJECTID);
@@ -2421,10 +2564,9 @@ int open_ctree(struct super_block *sb,
memcpy(fs_info->fsid, fs_info->super_copy->fsid, BTRFS_FSID_SIZE);
- ret = btrfs_check_super_valid(fs_info, sb->s_flags & MS_RDONLY);
- if (ret) {
+ err = btrfs_check_super_valid(fs_info, sb->s_flags & MS_RDONLY);
+ if (err) {
printk(KERN_ERR "BTRFS: superblock contains fatal errors\n");
- err = -EINVAL;
goto fail_alloc;
}
@@ -2449,11 +2591,9 @@ int open_ctree(struct super_block *sb,
*/
fs_info->compress_type = BTRFS_COMPRESS_ZLIB;
- ret = btrfs_parse_options(tree_root, options);
- if (ret) {
- err = ret;
+ err = btrfs_parse_options(tree_root, options);
+ if (err)
goto fail_alloc;
- }
features = btrfs_super_incompat_flags(disk_super) &
~BTRFS_FEATURE_INCOMPAT_SUPP;
@@ -2535,76 +2675,9 @@ int open_ctree(struct super_block *sb,
goto fail_alloc;
}
- max_active = fs_info->thread_pool_size;
-
- fs_info->workers =
- btrfs_alloc_workqueue("worker", flags | WQ_HIGHPRI,
- max_active, 16);
-
- fs_info->delalloc_workers =
- btrfs_alloc_workqueue("delalloc", flags, max_active, 2);
-
- fs_info->flush_workers =
- btrfs_alloc_workqueue("flush_delalloc", flags, max_active, 0);
-
- fs_info->caching_workers =
- btrfs_alloc_workqueue("cache", flags, max_active, 0);
-
- /*
- * a higher idle thresh on the submit workers makes it much more
- * likely that bios will be send down in a sane order to the
- * devices
- */
- fs_info->submit_workers =
- btrfs_alloc_workqueue("submit", flags,
- min_t(u64, fs_devices->num_devices,
- max_active), 64);
-
- fs_info->fixup_workers =
- btrfs_alloc_workqueue("fixup", flags, 1, 0);
-
- /*
- * endios are largely parallel and should have a very
- * low idle thresh
- */
- fs_info->endio_workers =
- btrfs_alloc_workqueue("endio", flags, max_active, 4);
- fs_info->endio_meta_workers =
- btrfs_alloc_workqueue("endio-meta", flags, max_active, 4);
- fs_info->endio_meta_write_workers =
- btrfs_alloc_workqueue("endio-meta-write", flags, max_active, 2);
- fs_info->endio_raid56_workers =
- btrfs_alloc_workqueue("endio-raid56", flags, max_active, 4);
- fs_info->rmw_workers =
- btrfs_alloc_workqueue("rmw", flags, max_active, 2);
- fs_info->endio_write_workers =
- btrfs_alloc_workqueue("endio-write", flags, max_active, 2);
- fs_info->endio_freespace_worker =
- btrfs_alloc_workqueue("freespace-write", flags, max_active, 0);
- fs_info->delayed_workers =
- btrfs_alloc_workqueue("delayed-meta", flags, max_active, 0);
- fs_info->readahead_workers =
- btrfs_alloc_workqueue("readahead", flags, max_active, 2);
- fs_info->qgroup_rescan_workers =
- btrfs_alloc_workqueue("qgroup-rescan", flags, 1, 0);
- fs_info->extent_workers =
- btrfs_alloc_workqueue("extent-refs", flags,
- min_t(u64, fs_devices->num_devices,
- max_active), 8);
-
- if (!(fs_info->workers && fs_info->delalloc_workers &&
- fs_info->submit_workers && fs_info->flush_workers &&
- fs_info->endio_workers && fs_info->endio_meta_workers &&
- fs_info->endio_meta_write_workers &&
- fs_info->endio_write_workers && fs_info->endio_raid56_workers &&
- fs_info->endio_freespace_worker && fs_info->rmw_workers &&
- fs_info->caching_workers && fs_info->readahead_workers &&
- fs_info->fixup_workers && fs_info->delayed_workers &&
- fs_info->fixup_workers && fs_info->extent_workers &&
- fs_info->qgroup_rescan_workers)) {
- err = -ENOMEM;
+ err = btrfs_alloc_workqueues(fs_info, fs_devices, flags);
+ if (err)
goto fail_sb_buffer;
- }
fs_info->bdi.ra_pages *= btrfs_super_num_devices(disk_super);
fs_info->bdi.ra_pages = max(fs_info->bdi.ra_pages,
@@ -2630,14 +2703,17 @@ int open_ctree(struct super_block *sb,
}
mutex_lock(&fs_info->chunk_mutex);
- ret = btrfs_read_sys_array(tree_root);
+ err = btrfs_read_sys_array(tree_root);
mutex_unlock(&fs_info->chunk_mutex);
- if (ret) {
+ if (err) {
printk(KERN_WARNING "BTRFS: failed to read the system "
"array on %s\n", sb->s_id);
goto fail_sb_buffer;
}
+ /* From here on we don't trust function returns to be errnos... */
+ err = -EINVAL;
+
blocksize = btrfs_level_size(tree_root,
btrfs_super_chunk_root_level(disk_super));
generation = btrfs_super_chunk_root_generation(disk_super);
@@ -2847,52 +2923,11 @@ retry_root_backup:
/* do not make disk changes in broken FS */
if (btrfs_super_log_root(disk_super) != 0) {
- u64 bytenr = btrfs_super_log_root(disk_super);
-
- if (fs_devices->rw_devices == 0) {
- printk(KERN_WARNING "BTRFS: log replay required "
- "on RO media\n");
- err = -EIO;
- goto fail_qgroup;
- }
- blocksize =
- btrfs_level_size(tree_root,
- btrfs_super_log_root_level(disk_super));
-
- log_tree_root = btrfs_alloc_root(fs_info);
- if (!log_tree_root) {
- err = -ENOMEM;
- goto fail_qgroup;
- }
-
- __setup_root(nodesize, leafsize, sectorsize, stripesize,
- log_tree_root, fs_info, BTRFS_TREE_LOG_OBJECTID);
-
- log_tree_root->node = read_tree_block(tree_root, bytenr,
- blocksize,
- generation + 1);
- if (!log_tree_root->node ||
- !extent_buffer_uptodate(log_tree_root->node)) {
- printk(KERN_ERR "BTRFS: failed to read log tree\n");
- free_extent_buffer(log_tree_root->node);
- kfree(log_tree_root);
- goto fail_qgroup;
- }
- /* returns with log_tree_root freed on success */
- ret = btrfs_recover_log_trees(log_tree_root);
+ ret = btrfs_replay_log(fs_info);
if (ret) {
- btrfs_error(tree_root->fs_info, ret,
- "Failed to recover log tree");
- free_extent_buffer(log_tree_root->node);
- kfree(log_tree_root);
+ err = ret;
goto fail_qgroup;
}
-
- if (sb->s_flags & MS_RDONLY) {
- ret = btrfs_commit_super(tree_root);
- if (ret)
- goto fail_qgroup;
- }
}
ret = btrfs_find_orphan_roots(tree_root);
--
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