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-rw-r--r--fs/btrfs/async-thread.c81
-rw-r--r--fs/btrfs/async-thread.h10
-rw-r--r--fs/btrfs/btrfs_inode.h12
-rw-r--r--fs/btrfs/ctree.h15
-rw-r--r--fs/btrfs/disk-io.c48
-rw-r--r--fs/btrfs/extent-tree.c235
-rw-r--r--fs/btrfs/extent_io.c42
-rw-r--r--fs/btrfs/extent_io.h18
-rw-r--r--fs/btrfs/file.c3
-rw-r--r--fs/btrfs/inode.c111
-rw-r--r--fs/btrfs/ioctl.c7
-rw-r--r--fs/btrfs/ordered-data.c6
-rw-r--r--fs/btrfs/relocation.c4
-rw-r--r--fs/btrfs/tree-log.c12
14 files changed, 447 insertions, 157 deletions
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index 282ca085c2fb..c0861e781cdb 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -64,6 +64,51 @@ struct btrfs_worker_thread {
64}; 64};
65 65
66/* 66/*
67 * btrfs_start_workers uses kthread_run, which can block waiting for memory
68 * for a very long time. It will actually throttle on page writeback,
69 * and so it may not make progress until after our btrfs worker threads
70 * process all of the pending work structs in their queue
71 *
72 * This means we can't use btrfs_start_workers from inside a btrfs worker
73 * thread that is used as part of cleaning dirty memory, which pretty much
74 * involves all of the worker threads.
75 *
76 * Instead we have a helper queue who never has more than one thread
77 * where we scheduler thread start operations. This worker_start struct
78 * is used to contain the work and hold a pointer to the queue that needs
79 * another worker.
80 */
81struct worker_start {
82 struct btrfs_work work;
83 struct btrfs_workers *queue;
84};
85
86static void start_new_worker_func(struct btrfs_work *work)
87{
88 struct worker_start *start;
89 start = container_of(work, struct worker_start, work);
90 btrfs_start_workers(start->queue, 1);
91 kfree(start);
92}
93
94static int start_new_worker(struct btrfs_workers *queue)
95{
96 struct worker_start *start;
97 int ret;
98
99 start = kzalloc(sizeof(*start), GFP_NOFS);
100 if (!start)
101 return -ENOMEM;
102
103 start->work.func = start_new_worker_func;
104 start->queue = queue;
105 ret = btrfs_queue_worker(queue->atomic_worker_start, &start->work);
106 if (ret)
107 kfree(start);
108 return ret;
109}
110
111/*
67 * helper function to move a thread onto the idle list after it 112 * helper function to move a thread onto the idle list after it
68 * has finished some requests. 113 * has finished some requests.
69 */ 114 */
@@ -118,11 +163,13 @@ static void check_pending_worker_creates(struct btrfs_worker_thread *worker)
118 goto out; 163 goto out;
119 164
120 workers->atomic_start_pending = 0; 165 workers->atomic_start_pending = 0;
121 if (workers->num_workers >= workers->max_workers) 166 if (workers->num_workers + workers->num_workers_starting >=
167 workers->max_workers)
122 goto out; 168 goto out;
123 169
170 workers->num_workers_starting += 1;
124 spin_unlock_irqrestore(&workers->lock, flags); 171 spin_unlock_irqrestore(&workers->lock, flags);
125 btrfs_start_workers(workers, 1); 172 start_new_worker(workers);
126 return; 173 return;
127 174
128out: 175out:
@@ -390,9 +437,11 @@ int btrfs_stop_workers(struct btrfs_workers *workers)
390/* 437/*
391 * simple init on struct btrfs_workers 438 * simple init on struct btrfs_workers
392 */ 439 */
393void btrfs_init_workers(struct btrfs_workers *workers, char *name, int max) 440void btrfs_init_workers(struct btrfs_workers *workers, char *name, int max,
441 struct btrfs_workers *async_helper)
394{ 442{
395 workers->num_workers = 0; 443 workers->num_workers = 0;
444 workers->num_workers_starting = 0;
396 INIT_LIST_HEAD(&workers->worker_list); 445 INIT_LIST_HEAD(&workers->worker_list);
397 INIT_LIST_HEAD(&workers->idle_list); 446 INIT_LIST_HEAD(&workers->idle_list);
398 INIT_LIST_HEAD(&workers->order_list); 447 INIT_LIST_HEAD(&workers->order_list);
@@ -404,14 +453,15 @@ void btrfs_init_workers(struct btrfs_workers *workers, char *name, int max)
404 workers->name = name; 453 workers->name = name;
405 workers->ordered = 0; 454 workers->ordered = 0;
406 workers->atomic_start_pending = 0; 455 workers->atomic_start_pending = 0;
407 workers->atomic_worker_start = 0; 456 workers->atomic_worker_start = async_helper;
408} 457}
409 458
410/* 459/*
411 * starts new worker threads. This does not enforce the max worker 460 * starts new worker threads. This does not enforce the max worker
412 * count in case you need to temporarily go past it. 461 * count in case you need to temporarily go past it.
413 */ 462 */
414int btrfs_start_workers(struct btrfs_workers *workers, int num_workers) 463static int __btrfs_start_workers(struct btrfs_workers *workers,
464 int num_workers)
415{ 465{
416 struct btrfs_worker_thread *worker; 466 struct btrfs_worker_thread *worker;
417 int ret = 0; 467 int ret = 0;
@@ -444,6 +494,8 @@ int btrfs_start_workers(struct btrfs_workers *workers, int num_workers)
444 list_add_tail(&worker->worker_list, &workers->idle_list); 494 list_add_tail(&worker->worker_list, &workers->idle_list);
445 worker->idle = 1; 495 worker->idle = 1;
446 workers->num_workers++; 496 workers->num_workers++;
497 workers->num_workers_starting--;
498 WARN_ON(workers->num_workers_starting < 0);
447 spin_unlock_irq(&workers->lock); 499 spin_unlock_irq(&workers->lock);
448 } 500 }
449 return 0; 501 return 0;
@@ -452,6 +504,14 @@ fail:
452 return ret; 504 return ret;
453} 505}
454 506
507int btrfs_start_workers(struct btrfs_workers *workers, int num_workers)
508{
509 spin_lock_irq(&workers->lock);
510 workers->num_workers_starting += num_workers;
511 spin_unlock_irq(&workers->lock);
512 return __btrfs_start_workers(workers, num_workers);
513}
514
455/* 515/*
456 * run through the list and find a worker thread that doesn't have a lot 516 * run through the list and find a worker thread that doesn't have a lot
457 * to do right now. This can return null if we aren't yet at the thread 517 * to do right now. This can return null if we aren't yet at the thread
@@ -461,7 +521,10 @@ static struct btrfs_worker_thread *next_worker(struct btrfs_workers *workers)
461{ 521{
462 struct btrfs_worker_thread *worker; 522 struct btrfs_worker_thread *worker;
463 struct list_head *next; 523 struct list_head *next;
464 int enforce_min = workers->num_workers < workers->max_workers; 524 int enforce_min;
525
526 enforce_min = (workers->num_workers + workers->num_workers_starting) <
527 workers->max_workers;
465 528
466 /* 529 /*
467 * if we find an idle thread, don't move it to the end of the 530 * if we find an idle thread, don't move it to the end of the
@@ -509,15 +572,17 @@ again:
509 worker = next_worker(workers); 572 worker = next_worker(workers);
510 573
511 if (!worker) { 574 if (!worker) {
512 if (workers->num_workers >= workers->max_workers) { 575 if (workers->num_workers + workers->num_workers_starting >=
576 workers->max_workers) {
513 goto fallback; 577 goto fallback;
514 } else if (workers->atomic_worker_start) { 578 } else if (workers->atomic_worker_start) {
515 workers->atomic_start_pending = 1; 579 workers->atomic_start_pending = 1;
516 goto fallback; 580 goto fallback;
517 } else { 581 } else {
582 workers->num_workers_starting++;
518 spin_unlock_irqrestore(&workers->lock, flags); 583 spin_unlock_irqrestore(&workers->lock, flags);
519 /* we're below the limit, start another worker */ 584 /* we're below the limit, start another worker */
520 btrfs_start_workers(workers, 1); 585 __btrfs_start_workers(workers, 1);
521 goto again; 586 goto again;
522 } 587 }
523 } 588 }
diff --git a/fs/btrfs/async-thread.h b/fs/btrfs/async-thread.h
index fc089b95ec14..5077746cf85e 100644
--- a/fs/btrfs/async-thread.h
+++ b/fs/btrfs/async-thread.h
@@ -64,6 +64,8 @@ struct btrfs_workers {
64 /* current number of running workers */ 64 /* current number of running workers */
65 int num_workers; 65 int num_workers;
66 66
67 int num_workers_starting;
68
67 /* max number of workers allowed. changed by btrfs_start_workers */ 69 /* max number of workers allowed. changed by btrfs_start_workers */
68 int max_workers; 70 int max_workers;
69 71
@@ -78,9 +80,10 @@ struct btrfs_workers {
78 80
79 /* 81 /*
80 * are we allowed to sleep while starting workers or are we required 82 * are we allowed to sleep while starting workers or are we required
81 * to start them at a later time? 83 * to start them at a later time? If we can't sleep, this indicates
84 * which queue we need to use to schedule thread creation.
82 */ 85 */
83 int atomic_worker_start; 86 struct btrfs_workers *atomic_worker_start;
84 87
85 /* list with all the work threads. The workers on the idle thread 88 /* list with all the work threads. The workers on the idle thread
86 * may be actively servicing jobs, but they haven't yet hit the 89 * may be actively servicing jobs, but they haven't yet hit the
@@ -109,7 +112,8 @@ struct btrfs_workers {
109int btrfs_queue_worker(struct btrfs_workers *workers, struct btrfs_work *work); 112int btrfs_queue_worker(struct btrfs_workers *workers, struct btrfs_work *work);
110int btrfs_start_workers(struct btrfs_workers *workers, int num_workers); 113int btrfs_start_workers(struct btrfs_workers *workers, int num_workers);
111int btrfs_stop_workers(struct btrfs_workers *workers); 114int btrfs_stop_workers(struct btrfs_workers *workers);
112void btrfs_init_workers(struct btrfs_workers *workers, char *name, int max); 115void btrfs_init_workers(struct btrfs_workers *workers, char *name, int max,
116 struct btrfs_workers *async_starter);
113int btrfs_requeue_work(struct btrfs_work *work); 117int btrfs_requeue_work(struct btrfs_work *work);
114void btrfs_set_work_high_prio(struct btrfs_work *work); 118void btrfs_set_work_high_prio(struct btrfs_work *work);
115#endif 119#endif
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index a54d354cefcb..c71abec0ab90 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -128,12 +128,14 @@ struct btrfs_inode {
128 u64 last_unlink_trans; 128 u64 last_unlink_trans;
129 129
130 /* 130 /*
131 * These two counters are for delalloc metadata reservations. We keep 131 * Counters to keep track of the number of extent item's we may use due
132 * track of how many extents we've accounted for vs how many extents we 132 * to delalloc and such. outstanding_extents is the number of extent
133 * have. 133 * items we think we'll end up using, and reserved_extents is the number
134 * of extent items we've reserved metadata for.
134 */ 135 */
135 int delalloc_reserved_extents; 136 spinlock_t accounting_lock;
136 int delalloc_extents; 137 int reserved_extents;
138 int outstanding_extents;
137 139
138 /* 140 /*
139 * ordered_data_close is set by truncate when a file that used 141 * ordered_data_close is set by truncate when a file that used
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index dd8ced9814c4..1bb897ecdeeb 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -691,14 +691,17 @@ struct btrfs_space_info {
691 691
692 struct list_head list; 692 struct list_head list;
693 693
694 /* for controlling how we free up space for allocations */
695 wait_queue_head_t allocate_wait;
696 wait_queue_head_t flush_wait;
697 int allocating_chunk;
698 int flushing;
699
694 /* for block groups in our same type */ 700 /* for block groups in our same type */
695 struct list_head block_groups; 701 struct list_head block_groups;
696 spinlock_t lock; 702 spinlock_t lock;
697 struct rw_semaphore groups_sem; 703 struct rw_semaphore groups_sem;
698 atomic_t caching_threads; 704 atomic_t caching_threads;
699
700 int allocating_chunk;
701 wait_queue_head_t wait;
702}; 705};
703 706
704/* 707/*
@@ -907,6 +910,7 @@ struct btrfs_fs_info {
907 * A third pool does submit_bio to avoid deadlocking with the other 910 * A third pool does submit_bio to avoid deadlocking with the other
908 * two 911 * two
909 */ 912 */
913 struct btrfs_workers generic_worker;
910 struct btrfs_workers workers; 914 struct btrfs_workers workers;
911 struct btrfs_workers delalloc_workers; 915 struct btrfs_workers delalloc_workers;
912 struct btrfs_workers endio_workers; 916 struct btrfs_workers endio_workers;
@@ -914,6 +918,7 @@ struct btrfs_fs_info {
914 struct btrfs_workers endio_meta_write_workers; 918 struct btrfs_workers endio_meta_write_workers;
915 struct btrfs_workers endio_write_workers; 919 struct btrfs_workers endio_write_workers;
916 struct btrfs_workers submit_workers; 920 struct btrfs_workers submit_workers;
921 struct btrfs_workers enospc_workers;
917 /* 922 /*
918 * fixup workers take dirty pages that didn't properly go through 923 * fixup workers take dirty pages that didn't properly go through
919 * the cow mechanism and make them safe to write. It happens 924 * the cow mechanism and make them safe to write. It happens
@@ -1005,6 +1010,8 @@ struct btrfs_root {
1005 atomic_t log_commit[2]; 1010 atomic_t log_commit[2];
1006 unsigned long log_transid; 1011 unsigned long log_transid;
1007 unsigned long log_batch; 1012 unsigned long log_batch;
1013 pid_t log_start_pid;
1014 bool log_multiple_pids;
1008 1015
1009 u64 objectid; 1016 u64 objectid;
1010 u64 last_trans; 1017 u64 last_trans;
@@ -2323,7 +2330,7 @@ int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode);
2323void btrfs_orphan_cleanup(struct btrfs_root *root); 2330void btrfs_orphan_cleanup(struct btrfs_root *root);
2324int btrfs_cont_expand(struct inode *inode, loff_t size); 2331int btrfs_cont_expand(struct inode *inode, loff_t size);
2325int btrfs_invalidate_inodes(struct btrfs_root *root); 2332int btrfs_invalidate_inodes(struct btrfs_root *root);
2326extern struct dentry_operations btrfs_dentry_operations; 2333extern const struct dentry_operations btrfs_dentry_operations;
2327 2334
2328/* ioctl.c */ 2335/* ioctl.c */
2329long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 2336long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index af0435f79fa6..100551a66c46 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1746,21 +1746,25 @@ struct btrfs_root *open_ctree(struct super_block *sb,
1746 err = -EINVAL; 1746 err = -EINVAL;
1747 goto fail_iput; 1747 goto fail_iput;
1748 } 1748 }
1749printk("thread pool is %d\n", fs_info->thread_pool_size); 1749
1750 /* 1750 btrfs_init_workers(&fs_info->generic_worker,
1751 * we need to start all the end_io workers up front because the 1751 "genwork", 1, NULL);
1752 * queue work function gets called at interrupt time, and so it 1752
1753 * cannot dynamically grow.
1754 */
1755 btrfs_init_workers(&fs_info->workers, "worker", 1753 btrfs_init_workers(&fs_info->workers, "worker",
1756 fs_info->thread_pool_size); 1754 fs_info->thread_pool_size,
1755 &fs_info->generic_worker);
1757 1756
1758 btrfs_init_workers(&fs_info->delalloc_workers, "delalloc", 1757 btrfs_init_workers(&fs_info->delalloc_workers, "delalloc",
1759 fs_info->thread_pool_size); 1758 fs_info->thread_pool_size,
1759 &fs_info->generic_worker);
1760 1760
1761 btrfs_init_workers(&fs_info->submit_workers, "submit", 1761 btrfs_init_workers(&fs_info->submit_workers, "submit",
1762 min_t(u64, fs_devices->num_devices, 1762 min_t(u64, fs_devices->num_devices,
1763 fs_info->thread_pool_size)); 1763 fs_info->thread_pool_size),
1764 &fs_info->generic_worker);
1765 btrfs_init_workers(&fs_info->enospc_workers, "enospc",
1766 fs_info->thread_pool_size,
1767 &fs_info->generic_worker);
1764 1768
1765 /* a higher idle thresh on the submit workers makes it much more 1769 /* a higher idle thresh on the submit workers makes it much more
1766 * likely that bios will be send down in a sane order to the 1770 * likely that bios will be send down in a sane order to the
@@ -1774,15 +1778,20 @@ printk("thread pool is %d\n", fs_info->thread_pool_size);
1774 fs_info->delalloc_workers.idle_thresh = 2; 1778 fs_info->delalloc_workers.idle_thresh = 2;
1775 fs_info->delalloc_workers.ordered = 1; 1779 fs_info->delalloc_workers.ordered = 1;
1776 1780
1777 btrfs_init_workers(&fs_info->fixup_workers, "fixup", 1); 1781 btrfs_init_workers(&fs_info->fixup_workers, "fixup", 1,
1782 &fs_info->generic_worker);
1778 btrfs_init_workers(&fs_info->endio_workers, "endio", 1783 btrfs_init_workers(&fs_info->endio_workers, "endio",
1779 fs_info->thread_pool_size); 1784 fs_info->thread_pool_size,
1785 &fs_info->generic_worker);
1780 btrfs_init_workers(&fs_info->endio_meta_workers, "endio-meta", 1786 btrfs_init_workers(&fs_info->endio_meta_workers, "endio-meta",
1781 fs_info->thread_pool_size); 1787 fs_info->thread_pool_size,
1788 &fs_info->generic_worker);
1782 btrfs_init_workers(&fs_info->endio_meta_write_workers, 1789 btrfs_init_workers(&fs_info->endio_meta_write_workers,
1783 "endio-meta-write", fs_info->thread_pool_size); 1790 "endio-meta-write", fs_info->thread_pool_size,
1791 &fs_info->generic_worker);
1784 btrfs_init_workers(&fs_info->endio_write_workers, "endio-write", 1792 btrfs_init_workers(&fs_info->endio_write_workers, "endio-write",
1785 fs_info->thread_pool_size); 1793 fs_info->thread_pool_size,
1794 &fs_info->generic_worker);
1786 1795
1787 /* 1796 /*
1788 * endios are largely parallel and should have a very 1797 * endios are largely parallel and should have a very
@@ -1794,12 +1803,8 @@ printk("thread pool is %d\n", fs_info->thread_pool_size);
1794 fs_info->endio_write_workers.idle_thresh = 2; 1803 fs_info->endio_write_workers.idle_thresh = 2;
1795 fs_info->endio_meta_write_workers.idle_thresh = 2; 1804 fs_info->endio_meta_write_workers.idle_thresh = 2;
1796 1805
1797 fs_info->endio_workers.atomic_worker_start = 1;
1798 fs_info->endio_meta_workers.atomic_worker_start = 1;
1799 fs_info->endio_write_workers.atomic_worker_start = 1;
1800 fs_info->endio_meta_write_workers.atomic_worker_start = 1;
1801
1802 btrfs_start_workers(&fs_info->workers, 1); 1806 btrfs_start_workers(&fs_info->workers, 1);
1807 btrfs_start_workers(&fs_info->generic_worker, 1);
1803 btrfs_start_workers(&fs_info->submit_workers, 1); 1808 btrfs_start_workers(&fs_info->submit_workers, 1);
1804 btrfs_start_workers(&fs_info->delalloc_workers, 1); 1809 btrfs_start_workers(&fs_info->delalloc_workers, 1);
1805 btrfs_start_workers(&fs_info->fixup_workers, 1); 1810 btrfs_start_workers(&fs_info->fixup_workers, 1);
@@ -1807,6 +1812,7 @@ printk("thread pool is %d\n", fs_info->thread_pool_size);
1807 btrfs_start_workers(&fs_info->endio_meta_workers, 1); 1812 btrfs_start_workers(&fs_info->endio_meta_workers, 1);
1808 btrfs_start_workers(&fs_info->endio_meta_write_workers, 1); 1813 btrfs_start_workers(&fs_info->endio_meta_write_workers, 1);
1809 btrfs_start_workers(&fs_info->endio_write_workers, 1); 1814 btrfs_start_workers(&fs_info->endio_write_workers, 1);
1815 btrfs_start_workers(&fs_info->enospc_workers, 1);
1810 1816
1811 fs_info->bdi.ra_pages *= btrfs_super_num_devices(disk_super); 1817 fs_info->bdi.ra_pages *= btrfs_super_num_devices(disk_super);
1812 fs_info->bdi.ra_pages = max(fs_info->bdi.ra_pages, 1818 fs_info->bdi.ra_pages = max(fs_info->bdi.ra_pages,
@@ -2012,6 +2018,7 @@ fail_chunk_root:
2012 free_extent_buffer(chunk_root->node); 2018 free_extent_buffer(chunk_root->node);
2013 free_extent_buffer(chunk_root->commit_root); 2019 free_extent_buffer(chunk_root->commit_root);
2014fail_sb_buffer: 2020fail_sb_buffer:
2021 btrfs_stop_workers(&fs_info->generic_worker);
2015 btrfs_stop_workers(&fs_info->fixup_workers); 2022 btrfs_stop_workers(&fs_info->fixup_workers);
2016 btrfs_stop_workers(&fs_info->delalloc_workers); 2023 btrfs_stop_workers(&fs_info->delalloc_workers);
2017 btrfs_stop_workers(&fs_info->workers); 2024 btrfs_stop_workers(&fs_info->workers);
@@ -2020,6 +2027,7 @@ fail_sb_buffer:
2020 btrfs_stop_workers(&fs_info->endio_meta_write_workers); 2027 btrfs_stop_workers(&fs_info->endio_meta_write_workers);
2021 btrfs_stop_workers(&fs_info->endio_write_workers); 2028 btrfs_stop_workers(&fs_info->endio_write_workers);
2022 btrfs_stop_workers(&fs_info->submit_workers); 2029 btrfs_stop_workers(&fs_info->submit_workers);
2030 btrfs_stop_workers(&fs_info->enospc_workers);
2023fail_iput: 2031fail_iput:
2024 invalidate_inode_pages2(fs_info->btree_inode->i_mapping); 2032 invalidate_inode_pages2(fs_info->btree_inode->i_mapping);
2025 iput(fs_info->btree_inode); 2033 iput(fs_info->btree_inode);
@@ -2437,6 +2445,7 @@ int close_ctree(struct btrfs_root *root)
2437 2445
2438 iput(fs_info->btree_inode); 2446 iput(fs_info->btree_inode);
2439 2447
2448 btrfs_stop_workers(&fs_info->generic_worker);
2440 btrfs_stop_workers(&fs_info->fixup_workers); 2449 btrfs_stop_workers(&fs_info->fixup_workers);
2441 btrfs_stop_workers(&fs_info->delalloc_workers); 2450 btrfs_stop_workers(&fs_info->delalloc_workers);
2442 btrfs_stop_workers(&fs_info->workers); 2451 btrfs_stop_workers(&fs_info->workers);
@@ -2445,6 +2454,7 @@ int close_ctree(struct btrfs_root *root)
2445 btrfs_stop_workers(&fs_info->endio_meta_write_workers); 2454 btrfs_stop_workers(&fs_info->endio_meta_write_workers);
2446 btrfs_stop_workers(&fs_info->endio_write_workers); 2455 btrfs_stop_workers(&fs_info->endio_write_workers);
2447 btrfs_stop_workers(&fs_info->submit_workers); 2456 btrfs_stop_workers(&fs_info->submit_workers);
2457 btrfs_stop_workers(&fs_info->enospc_workers);
2448 2458
2449 btrfs_close_devices(fs_info->fs_devices); 2459 btrfs_close_devices(fs_info->fs_devices);
2450 btrfs_mapping_tree_free(&fs_info->mapping_tree); 2460 btrfs_mapping_tree_free(&fs_info->mapping_tree);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 359a754c782c..d0c4d584efad 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2824,14 +2824,17 @@ int btrfs_unreserve_metadata_for_delalloc(struct btrfs_root *root,
2824 num_items); 2824 num_items);
2825 2825
2826 spin_lock(&meta_sinfo->lock); 2826 spin_lock(&meta_sinfo->lock);
2827 if (BTRFS_I(inode)->delalloc_reserved_extents <= 2827 spin_lock(&BTRFS_I(inode)->accounting_lock);
2828 BTRFS_I(inode)->delalloc_extents) { 2828 if (BTRFS_I(inode)->reserved_extents <=
2829 BTRFS_I(inode)->outstanding_extents) {
2830 spin_unlock(&BTRFS_I(inode)->accounting_lock);
2829 spin_unlock(&meta_sinfo->lock); 2831 spin_unlock(&meta_sinfo->lock);
2830 return 0; 2832 return 0;
2831 } 2833 }
2834 spin_unlock(&BTRFS_I(inode)->accounting_lock);
2832 2835
2833 BTRFS_I(inode)->delalloc_reserved_extents--; 2836 BTRFS_I(inode)->reserved_extents--;
2834 BUG_ON(BTRFS_I(inode)->delalloc_reserved_extents < 0); 2837 BUG_ON(BTRFS_I(inode)->reserved_extents < 0);
2835 2838
2836 if (meta_sinfo->bytes_delalloc < num_bytes) { 2839 if (meta_sinfo->bytes_delalloc < num_bytes) {
2837 bug = true; 2840 bug = true;
@@ -2864,6 +2867,107 @@ static void check_force_delalloc(struct btrfs_space_info *meta_sinfo)
2864 meta_sinfo->force_delalloc = 0; 2867 meta_sinfo->force_delalloc = 0;
2865} 2868}
2866 2869
2870struct async_flush {
2871 struct btrfs_root *root;
2872 struct btrfs_space_info *info;
2873 struct btrfs_work work;
2874};
2875
2876static noinline void flush_delalloc_async(struct btrfs_work *work)
2877{
2878 struct async_flush *async;
2879 struct btrfs_root *root;
2880 struct btrfs_space_info *info;
2881
2882 async = container_of(work, struct async_flush, work);
2883 root = async->root;
2884 info = async->info;
2885
2886 btrfs_start_delalloc_inodes(root);
2887 wake_up(&info->flush_wait);
2888 btrfs_wait_ordered_extents(root, 0);
2889
2890 spin_lock(&info->lock);
2891 info->flushing = 0;
2892 spin_unlock(&info->lock);
2893 wake_up(&info->flush_wait);
2894
2895 kfree(async);
2896}
2897
2898static void wait_on_flush(struct btrfs_space_info *info)
2899{
2900 DEFINE_WAIT(wait);
2901 u64 used;
2902
2903 while (1) {
2904 prepare_to_wait(&info->flush_wait, &wait,
2905 TASK_UNINTERRUPTIBLE);
2906 spin_lock(&info->lock);
2907 if (!info->flushing) {
2908 spin_unlock(&info->lock);
2909 break;
2910 }
2911
2912 used = info->bytes_used + info->bytes_reserved +
2913 info->bytes_pinned + info->bytes_readonly +
2914 info->bytes_super + info->bytes_root +
2915 info->bytes_may_use + info->bytes_delalloc;
2916 if (used < info->total_bytes) {
2917 spin_unlock(&info->lock);
2918 break;
2919 }
2920 spin_unlock(&info->lock);
2921 schedule();
2922 }
2923 finish_wait(&info->flush_wait, &wait);
2924}
2925
2926static void flush_delalloc(struct btrfs_root *root,
2927 struct btrfs_space_info *info)
2928{
2929 struct async_flush *async;
2930 bool wait = false;
2931
2932 spin_lock(&info->lock);
2933
2934 if (!info->flushing) {
2935 info->flushing = 1;
2936 init_waitqueue_head(&info->flush_wait);
2937 } else {
2938 wait = true;
2939 }
2940
2941 spin_unlock(&info->lock);
2942
2943 if (wait) {
2944 wait_on_flush(info);
2945 return;
2946 }
2947
2948 async = kzalloc(sizeof(*async), GFP_NOFS);
2949 if (!async)
2950 goto flush;
2951
2952 async->root = root;
2953 async->info = info;
2954 async->work.func = flush_delalloc_async;
2955
2956 btrfs_queue_worker(&root->fs_info->enospc_workers,
2957 &async->work);
2958 wait_on_flush(info);
2959 return;
2960
2961flush:
2962 btrfs_start_delalloc_inodes(root);
2963 btrfs_wait_ordered_extents(root, 0);
2964
2965 spin_lock(&info->lock);
2966 info->flushing = 0;
2967 spin_unlock(&info->lock);
2968 wake_up(&info->flush_wait);
2969}
2970
2867static int maybe_allocate_chunk(struct btrfs_root *root, 2971static int maybe_allocate_chunk(struct btrfs_root *root,
2868 struct btrfs_space_info *info) 2972 struct btrfs_space_info *info)
2869{ 2973{
@@ -2894,7 +2998,7 @@ static int maybe_allocate_chunk(struct btrfs_root *root,
2894 if (!info->allocating_chunk) { 2998 if (!info->allocating_chunk) {
2895 info->force_alloc = 1; 2999 info->force_alloc = 1;
2896 info->allocating_chunk = 1; 3000 info->allocating_chunk = 1;
2897 init_waitqueue_head(&info->wait); 3001 init_waitqueue_head(&info->allocate_wait);
2898 } else { 3002 } else {
2899 wait = true; 3003 wait = true;
2900 } 3004 }
@@ -2902,7 +3006,7 @@ static int maybe_allocate_chunk(struct btrfs_root *root,
2902 spin_unlock(&info->lock); 3006 spin_unlock(&info->lock);
2903 3007
2904 if (wait) { 3008 if (wait) {
2905 wait_event(info->wait, 3009 wait_event(info->allocate_wait,
2906 !info->allocating_chunk); 3010 !info->allocating_chunk);
2907 return 1; 3011 return 1;
2908 } 3012 }
@@ -2923,7 +3027,7 @@ out:
2923 spin_lock(&info->lock); 3027 spin_lock(&info->lock);
2924 info->allocating_chunk = 0; 3028 info->allocating_chunk = 0;
2925 spin_unlock(&info->lock); 3029 spin_unlock(&info->lock);
2926 wake_up(&info->wait); 3030 wake_up(&info->allocate_wait);
2927 3031
2928 if (ret) 3032 if (ret)
2929 return 0; 3033 return 0;
@@ -2981,21 +3085,20 @@ again:
2981 filemap_flush(inode->i_mapping); 3085 filemap_flush(inode->i_mapping);
2982 goto again; 3086 goto again;
2983 } else if (flushed == 3) { 3087 } else if (flushed == 3) {
2984 btrfs_start_delalloc_inodes(root); 3088 flush_delalloc(root, meta_sinfo);
2985 btrfs_wait_ordered_extents(root, 0);
2986 goto again; 3089 goto again;
2987 } 3090 }
2988 spin_lock(&meta_sinfo->lock); 3091 spin_lock(&meta_sinfo->lock);
2989 meta_sinfo->bytes_delalloc -= num_bytes; 3092 meta_sinfo->bytes_delalloc -= num_bytes;
2990 spin_unlock(&meta_sinfo->lock); 3093 spin_unlock(&meta_sinfo->lock);
2991 printk(KERN_ERR "enospc, has %d, reserved %d\n", 3094 printk(KERN_ERR "enospc, has %d, reserved %d\n",
2992 BTRFS_I(inode)->delalloc_extents, 3095 BTRFS_I(inode)->outstanding_extents,
2993 BTRFS_I(inode)->delalloc_reserved_extents); 3096 BTRFS_I(inode)->reserved_extents);
2994 dump_space_info(meta_sinfo, 0, 0); 3097 dump_space_info(meta_sinfo, 0, 0);
2995 return -ENOSPC; 3098 return -ENOSPC;
2996 } 3099 }
2997 3100
2998 BTRFS_I(inode)->delalloc_reserved_extents++; 3101 BTRFS_I(inode)->reserved_extents++;
2999 check_force_delalloc(meta_sinfo); 3102 check_force_delalloc(meta_sinfo);
3000 spin_unlock(&meta_sinfo->lock); 3103 spin_unlock(&meta_sinfo->lock);
3001 3104
@@ -3094,8 +3197,7 @@ again:
3094 } 3197 }
3095 3198
3096 if (retries == 2) { 3199 if (retries == 2) {
3097 btrfs_start_delalloc_inodes(root); 3200 flush_delalloc(root, meta_sinfo);
3098 btrfs_wait_ordered_extents(root, 0);
3099 goto again; 3201 goto again;
3100 } 3202 }
3101 spin_lock(&meta_sinfo->lock); 3203 spin_lock(&meta_sinfo->lock);
@@ -4029,6 +4131,7 @@ static noinline int find_free_extent(struct btrfs_trans_handle *trans,
4029 int loop = 0; 4131 int loop = 0;
4030 bool found_uncached_bg = false; 4132 bool found_uncached_bg = false;
4031 bool failed_cluster_refill = false; 4133 bool failed_cluster_refill = false;
4134 bool failed_alloc = false;
4032 4135
4033 WARN_ON(num_bytes < root->sectorsize); 4136 WARN_ON(num_bytes < root->sectorsize);
4034 btrfs_set_key_type(ins, BTRFS_EXTENT_ITEM_KEY); 4137 btrfs_set_key_type(ins, BTRFS_EXTENT_ITEM_KEY);
@@ -4233,14 +4336,23 @@ refill_cluster:
4233 4336
4234 offset = btrfs_find_space_for_alloc(block_group, search_start, 4337 offset = btrfs_find_space_for_alloc(block_group, search_start,
4235 num_bytes, empty_size); 4338 num_bytes, empty_size);
4236 if (!offset && (cached || (!cached && 4339 /*
4237 loop == LOOP_CACHING_NOWAIT))) { 4340 * If we didn't find a chunk, and we haven't failed on this
4238 goto loop; 4341 * block group before, and this block group is in the middle of
4239 } else if (!offset && (!cached && 4342 * caching and we are ok with waiting, then go ahead and wait
4240 loop > LOOP_CACHING_NOWAIT)) { 4343 * for progress to be made, and set failed_alloc to true.
4344 *
4345 * If failed_alloc is true then we've already waited on this
4346 * block group once and should move on to the next block group.
4347 */
4348 if (!offset && !failed_alloc && !cached &&
4349 loop > LOOP_CACHING_NOWAIT) {
4241 wait_block_group_cache_progress(block_group, 4350 wait_block_group_cache_progress(block_group,
4242 num_bytes + empty_size); 4351 num_bytes + empty_size);
4352 failed_alloc = true;
4243 goto have_block_group; 4353 goto have_block_group;
4354 } else if (!offset) {
4355 goto loop;
4244 } 4356 }
4245checks: 4357checks:
4246 search_start = stripe_align(root, offset); 4358 search_start = stripe_align(root, offset);
@@ -4288,6 +4400,7 @@ checks:
4288 break; 4400 break;
4289loop: 4401loop:
4290 failed_cluster_refill = false; 4402 failed_cluster_refill = false;
4403 failed_alloc = false;
4291 btrfs_put_block_group(block_group); 4404 btrfs_put_block_group(block_group);
4292 } 4405 }
4293 up_read(&space_info->groups_sem); 4406 up_read(&space_info->groups_sem);
@@ -4799,6 +4912,7 @@ static noinline void reada_walk_down(struct btrfs_trans_handle *trans,
4799 u64 bytenr; 4912 u64 bytenr;
4800 u64 generation; 4913 u64 generation;
4801 u64 refs; 4914 u64 refs;
4915 u64 flags;
4802 u64 last = 0; 4916 u64 last = 0;
4803 u32 nritems; 4917 u32 nritems;
4804 u32 blocksize; 4918 u32 blocksize;
@@ -4836,15 +4950,19 @@ static noinline void reada_walk_down(struct btrfs_trans_handle *trans,
4836 generation <= root->root_key.offset) 4950 generation <= root->root_key.offset)
4837 continue; 4951 continue;
4838 4952
4953 /* We don't lock the tree block, it's OK to be racy here */
4954 ret = btrfs_lookup_extent_info(trans, root, bytenr, blocksize,
4955 &refs, &flags);
4956 BUG_ON(ret);
4957 BUG_ON(refs == 0);
4958
4839 if (wc->stage == DROP_REFERENCE) { 4959 if (wc->stage == DROP_REFERENCE) {
4840 ret = btrfs_lookup_extent_info(trans, root,
4841 bytenr, blocksize,
4842 &refs, NULL);
4843 BUG_ON(ret);
4844 BUG_ON(refs == 0);
4845 if (refs == 1) 4960 if (refs == 1)
4846 goto reada; 4961 goto reada;
4847 4962
4963 if (wc->level == 1 &&
4964 (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF))
4965 continue;
4848 if (!wc->update_ref || 4966 if (!wc->update_ref ||
4849 generation <= root->root_key.offset) 4967 generation <= root->root_key.offset)
4850 continue; 4968 continue;
@@ -4853,6 +4971,10 @@ static noinline void reada_walk_down(struct btrfs_trans_handle *trans,
4853 &wc->update_progress); 4971 &wc->update_progress);
4854 if (ret < 0) 4972 if (ret < 0)
4855 continue; 4973 continue;
4974 } else {
4975 if (wc->level == 1 &&
4976 (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF))
4977 continue;
4856 } 4978 }
4857reada: 4979reada:
4858 ret = readahead_tree_block(root, bytenr, blocksize, 4980 ret = readahead_tree_block(root, bytenr, blocksize,
@@ -4876,7 +4998,7 @@ reada:
4876static noinline int walk_down_proc(struct btrfs_trans_handle *trans, 4998static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
4877 struct btrfs_root *root, 4999 struct btrfs_root *root,
4878 struct btrfs_path *path, 5000 struct btrfs_path *path,
4879 struct walk_control *wc) 5001 struct walk_control *wc, int lookup_info)
4880{ 5002{
4881 int level = wc->level; 5003 int level = wc->level;
4882 struct extent_buffer *eb = path->nodes[level]; 5004 struct extent_buffer *eb = path->nodes[level];
@@ -4891,8 +5013,9 @@ static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
4891 * when reference count of tree block is 1, it won't increase 5013 * when reference count of tree block is 1, it won't increase
4892 * again. once full backref flag is set, we never clear it. 5014 * again. once full backref flag is set, we never clear it.
4893 */ 5015 */
4894 if ((wc->stage == DROP_REFERENCE && wc->refs[level] != 1) || 5016 if (lookup_info &&
4895 (wc->stage == UPDATE_BACKREF && !(wc->flags[level] & flag))) { 5017 ((wc->stage == DROP_REFERENCE && wc->refs[level] != 1) ||
5018 (wc->stage == UPDATE_BACKREF && !(wc->flags[level] & flag)))) {
4896 BUG_ON(!path->locks[level]); 5019 BUG_ON(!path->locks[level]);
4897 ret = btrfs_lookup_extent_info(trans, root, 5020 ret = btrfs_lookup_extent_info(trans, root,
4898 eb->start, eb->len, 5021 eb->start, eb->len,
@@ -4953,7 +5076,7 @@ static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
4953static noinline int do_walk_down(struct btrfs_trans_handle *trans, 5076static noinline int do_walk_down(struct btrfs_trans_handle *trans,
4954 struct btrfs_root *root, 5077 struct btrfs_root *root,
4955 struct btrfs_path *path, 5078 struct btrfs_path *path,
4956 struct walk_control *wc) 5079 struct walk_control *wc, int *lookup_info)
4957{ 5080{
4958 u64 bytenr; 5081 u64 bytenr;
4959 u64 generation; 5082 u64 generation;
@@ -4973,8 +5096,10 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
4973 * for the subtree 5096 * for the subtree
4974 */ 5097 */
4975 if (wc->stage == UPDATE_BACKREF && 5098 if (wc->stage == UPDATE_BACKREF &&
4976 generation <= root->root_key.offset) 5099 generation <= root->root_key.offset) {
5100 *lookup_info = 1;
4977 return 1; 5101 return 1;
5102 }
4978 5103
4979 bytenr = btrfs_node_blockptr(path->nodes[level], path->slots[level]); 5104 bytenr = btrfs_node_blockptr(path->nodes[level], path->slots[level]);
4980 blocksize = btrfs_level_size(root, level - 1); 5105 blocksize = btrfs_level_size(root, level - 1);
@@ -4987,14 +5112,19 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
4987 btrfs_tree_lock(next); 5112 btrfs_tree_lock(next);
4988 btrfs_set_lock_blocking(next); 5113 btrfs_set_lock_blocking(next);
4989 5114
4990 if (wc->stage == DROP_REFERENCE) { 5115 ret = btrfs_lookup_extent_info(trans, root, bytenr, blocksize,
4991 ret = btrfs_lookup_extent_info(trans, root, bytenr, blocksize, 5116 &wc->refs[level - 1],
4992 &wc->refs[level - 1], 5117 &wc->flags[level - 1]);
4993 &wc->flags[level - 1]); 5118 BUG_ON(ret);
4994 BUG_ON(ret); 5119 BUG_ON(wc->refs[level - 1] == 0);
4995 BUG_ON(wc->refs[level - 1] == 0); 5120 *lookup_info = 0;
4996 5121
5122 if (wc->stage == DROP_REFERENCE) {
4997 if (wc->refs[level - 1] > 1) { 5123 if (wc->refs[level - 1] > 1) {
5124 if (level == 1 &&
5125 (wc->flags[0] & BTRFS_BLOCK_FLAG_FULL_BACKREF))
5126 goto skip;
5127
4998 if (!wc->update_ref || 5128 if (!wc->update_ref ||
4999 generation <= root->root_key.offset) 5129 generation <= root->root_key.offset)
5000 goto skip; 5130 goto skip;
@@ -5008,12 +5138,17 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
5008 wc->stage = UPDATE_BACKREF; 5138 wc->stage = UPDATE_BACKREF;
5009 wc->shared_level = level - 1; 5139 wc->shared_level = level - 1;
5010 } 5140 }
5141 } else {
5142 if (level == 1 &&
5143 (wc->flags[0] & BTRFS_BLOCK_FLAG_FULL_BACKREF))
5144 goto skip;
5011 } 5145 }
5012 5146
5013 if (!btrfs_buffer_uptodate(next, generation)) { 5147 if (!btrfs_buffer_uptodate(next, generation)) {
5014 btrfs_tree_unlock(next); 5148 btrfs_tree_unlock(next);
5015 free_extent_buffer(next); 5149 free_extent_buffer(next);
5016 next = NULL; 5150 next = NULL;
5151 *lookup_info = 1;
5017 } 5152 }
5018 5153
5019 if (!next) { 5154 if (!next) {
@@ -5036,21 +5171,22 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
5036skip: 5171skip:
5037 wc->refs[level - 1] = 0; 5172 wc->refs[level - 1] = 0;
5038 wc->flags[level - 1] = 0; 5173 wc->flags[level - 1] = 0;
5174 if (wc->stage == DROP_REFERENCE) {
5175 if (wc->flags[level] & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
5176 parent = path->nodes[level]->start;
5177 } else {
5178 BUG_ON(root->root_key.objectid !=
5179 btrfs_header_owner(path->nodes[level]));
5180 parent = 0;
5181 }
5039 5182
5040 if (wc->flags[level] & BTRFS_BLOCK_FLAG_FULL_BACKREF) { 5183 ret = btrfs_free_extent(trans, root, bytenr, blocksize, parent,
5041 parent = path->nodes[level]->start; 5184 root->root_key.objectid, level - 1, 0);
5042 } else { 5185 BUG_ON(ret);
5043 BUG_ON(root->root_key.objectid !=
5044 btrfs_header_owner(path->nodes[level]));
5045 parent = 0;
5046 } 5186 }
5047
5048 ret = btrfs_free_extent(trans, root, bytenr, blocksize, parent,
5049 root->root_key.objectid, level - 1, 0);
5050 BUG_ON(ret);
5051
5052 btrfs_tree_unlock(next); 5187 btrfs_tree_unlock(next);
5053 free_extent_buffer(next); 5188 free_extent_buffer(next);
5189 *lookup_info = 1;
5054 return 1; 5190 return 1;
5055} 5191}
5056 5192
@@ -5164,6 +5300,7 @@ static noinline int walk_down_tree(struct btrfs_trans_handle *trans,
5164 struct walk_control *wc) 5300 struct walk_control *wc)
5165{ 5301{
5166 int level = wc->level; 5302 int level = wc->level;
5303 int lookup_info = 1;
5167 int ret; 5304 int ret;
5168 5305
5169 while (level >= 0) { 5306 while (level >= 0) {
@@ -5171,14 +5308,14 @@ static noinline int walk_down_tree(struct btrfs_trans_handle *trans,
5171 btrfs_header_nritems(path->nodes[level])) 5308 btrfs_header_nritems(path->nodes[level]))
5172 break; 5309 break;
5173 5310
5174 ret = walk_down_proc(trans, root, path, wc); 5311 ret = walk_down_proc(trans, root, path, wc, lookup_info);
5175 if (ret > 0) 5312 if (ret > 0)
5176 break; 5313 break;
5177 5314
5178 if (level == 0) 5315 if (level == 0)
5179 break; 5316 break;
5180 5317
5181 ret = do_walk_down(trans, root, path, wc); 5318 ret = do_walk_down(trans, root, path, wc, &lookup_info);
5182 if (ret > 0) { 5319 if (ret > 0) {
5183 path->slots[level]++; 5320 path->slots[level]++;
5184 continue; 5321 continue;
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index de1793ba004a..96577e8bf9fd 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -460,7 +460,8 @@ static int clear_state_bit(struct extent_io_tree *tree,
460 struct extent_state *state, int bits, int wake, 460 struct extent_state *state, int bits, int wake,
461 int delete) 461 int delete)
462{ 462{
463 int ret = state->state & bits; 463 int bits_to_clear = bits & ~EXTENT_DO_ACCOUNTING;
464 int ret = state->state & bits_to_clear;
464 465
465 if ((bits & EXTENT_DIRTY) && (state->state & EXTENT_DIRTY)) { 466 if ((bits & EXTENT_DIRTY) && (state->state & EXTENT_DIRTY)) {
466 u64 range = state->end - state->start + 1; 467 u64 range = state->end - state->start + 1;
@@ -468,7 +469,7 @@ static int clear_state_bit(struct extent_io_tree *tree,
468 tree->dirty_bytes -= range; 469 tree->dirty_bytes -= range;
469 } 470 }
470 clear_state_cb(tree, state, bits); 471 clear_state_cb(tree, state, bits);
471 state->state &= ~bits; 472 state->state &= ~bits_to_clear;
472 if (wake) 473 if (wake)
473 wake_up(&state->wq); 474 wake_up(&state->wq);
474 if (delete || state->state == 0) { 475 if (delete || state->state == 0) {
@@ -956,7 +957,8 @@ int clear_extent_dirty(struct extent_io_tree *tree, u64 start, u64 end,
956 gfp_t mask) 957 gfp_t mask)
957{ 958{
958 return clear_extent_bit(tree, start, end, 959 return clear_extent_bit(tree, start, end,
959 EXTENT_DIRTY | EXTENT_DELALLOC, 0, 0, 960 EXTENT_DIRTY | EXTENT_DELALLOC |
961 EXTENT_DO_ACCOUNTING, 0, 0,
960 NULL, mask); 962 NULL, mask);
961} 963}
962 964
@@ -1401,12 +1403,7 @@ out_failed:
1401int extent_clear_unlock_delalloc(struct inode *inode, 1403int extent_clear_unlock_delalloc(struct inode *inode,
1402 struct extent_io_tree *tree, 1404 struct extent_io_tree *tree,
1403 u64 start, u64 end, struct page *locked_page, 1405 u64 start, u64 end, struct page *locked_page,
1404 int unlock_pages, 1406 unsigned long op)
1405 int clear_unlock,
1406 int clear_delalloc, int clear_dirty,
1407 int set_writeback,
1408 int end_writeback,
1409 int set_private2)
1410{ 1407{
1411 int ret; 1408 int ret;
1412 struct page *pages[16]; 1409 struct page *pages[16];
@@ -1416,17 +1413,21 @@ int extent_clear_unlock_delalloc(struct inode *inode,
1416 int i; 1413 int i;
1417 int clear_bits = 0; 1414 int clear_bits = 0;
1418 1415
1419 if (clear_unlock) 1416 if (op & EXTENT_CLEAR_UNLOCK)
1420 clear_bits |= EXTENT_LOCKED; 1417 clear_bits |= EXTENT_LOCKED;
1421 if (clear_dirty) 1418 if (op & EXTENT_CLEAR_DIRTY)
1422 clear_bits |= EXTENT_DIRTY; 1419 clear_bits |= EXTENT_DIRTY;
1423 1420
1424 if (clear_delalloc) 1421 if (op & EXTENT_CLEAR_DELALLOC)
1425 clear_bits |= EXTENT_DELALLOC; 1422 clear_bits |= EXTENT_DELALLOC;
1426 1423
1424 if (op & EXTENT_CLEAR_ACCOUNTING)
1425 clear_bits |= EXTENT_DO_ACCOUNTING;
1426
1427 clear_extent_bit(tree, start, end, clear_bits, 1, 0, NULL, GFP_NOFS); 1427 clear_extent_bit(tree, start, end, clear_bits, 1, 0, NULL, GFP_NOFS);
1428 if (!(unlock_pages || clear_dirty || set_writeback || end_writeback || 1428 if (!(op & (EXTENT_CLEAR_UNLOCK_PAGE | EXTENT_CLEAR_DIRTY |
1429 set_private2)) 1429 EXTENT_SET_WRITEBACK | EXTENT_END_WRITEBACK |
1430 EXTENT_SET_PRIVATE2)))
1430 return 0; 1431 return 0;
1431 1432
1432 while (nr_pages > 0) { 1433 while (nr_pages > 0) {
@@ -1435,20 +1436,20 @@ int extent_clear_unlock_delalloc(struct inode *inode,
1435 nr_pages, ARRAY_SIZE(pages)), pages); 1436 nr_pages, ARRAY_SIZE(pages)), pages);
1436 for (i = 0; i < ret; i++) { 1437 for (i = 0; i < ret; i++) {
1437 1438
1438 if (set_private2) 1439 if (op & EXTENT_SET_PRIVATE2)
1439 SetPagePrivate2(pages[i]); 1440 SetPagePrivate2(pages[i]);
1440 1441
1441 if (pages[i] == locked_page) { 1442 if (pages[i] == locked_page) {
1442 page_cache_release(pages[i]); 1443 page_cache_release(pages[i]);
1443 continue; 1444 continue;
1444 } 1445 }
1445 if (clear_dirty) 1446 if (op & EXTENT_CLEAR_DIRTY)
1446 clear_page_dirty_for_io(pages[i]); 1447 clear_page_dirty_for_io(pages[i]);
1447 if (set_writeback) 1448 if (op & EXTENT_SET_WRITEBACK)
1448 set_page_writeback(pages[i]); 1449 set_page_writeback(pages[i]);
1449 if (end_writeback) 1450 if (op & EXTENT_END_WRITEBACK)
1450 end_page_writeback(pages[i]); 1451 end_page_writeback(pages[i]);
1451 if (unlock_pages) 1452 if (op & EXTENT_CLEAR_UNLOCK_PAGE)
1452 unlock_page(pages[i]); 1453 unlock_page(pages[i]);
1453 page_cache_release(pages[i]); 1454 page_cache_release(pages[i]);
1454 } 1455 }
@@ -2714,7 +2715,8 @@ int extent_invalidatepage(struct extent_io_tree *tree,
2714 lock_extent(tree, start, end, GFP_NOFS); 2715 lock_extent(tree, start, end, GFP_NOFS);
2715 wait_on_page_writeback(page); 2716 wait_on_page_writeback(page);
2716 clear_extent_bit(tree, start, end, 2717 clear_extent_bit(tree, start, end,
2717 EXTENT_LOCKED | EXTENT_DIRTY | EXTENT_DELALLOC, 2718 EXTENT_LOCKED | EXTENT_DIRTY | EXTENT_DELALLOC |
2719 EXTENT_DO_ACCOUNTING,
2718 1, 1, NULL, GFP_NOFS); 2720 1, 1, NULL, GFP_NOFS);
2719 return 0; 2721 return 0;
2720} 2722}
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 4794ec891fed..36de250a7b2b 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -15,6 +15,7 @@
15#define EXTENT_BUFFER_FILLED (1 << 8) 15#define EXTENT_BUFFER_FILLED (1 << 8)
16#define EXTENT_BOUNDARY (1 << 9) 16#define EXTENT_BOUNDARY (1 << 9)
17#define EXTENT_NODATASUM (1 << 10) 17#define EXTENT_NODATASUM (1 << 10)
18#define EXTENT_DO_ACCOUNTING (1 << 11)
18#define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK) 19#define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK)
19 20
20/* flags for bio submission */ 21/* flags for bio submission */
@@ -25,6 +26,16 @@
25#define EXTENT_BUFFER_BLOCKING 1 26#define EXTENT_BUFFER_BLOCKING 1
26#define EXTENT_BUFFER_DIRTY 2 27#define EXTENT_BUFFER_DIRTY 2
27 28
29/* these are flags for extent_clear_unlock_delalloc */
30#define EXTENT_CLEAR_UNLOCK_PAGE 0x1
31#define EXTENT_CLEAR_UNLOCK 0x2
32#define EXTENT_CLEAR_DELALLOC 0x4
33#define EXTENT_CLEAR_DIRTY 0x8
34#define EXTENT_SET_WRITEBACK 0x10
35#define EXTENT_END_WRITEBACK 0x20
36#define EXTENT_SET_PRIVATE2 0x40
37#define EXTENT_CLEAR_ACCOUNTING 0x80
38
28/* 39/*
29 * page->private values. Every page that is controlled by the extent 40 * page->private values. Every page that is controlled by the extent
30 * map has page->private set to one. 41 * map has page->private set to one.
@@ -288,10 +299,5 @@ int extent_range_uptodate(struct extent_io_tree *tree,
288int extent_clear_unlock_delalloc(struct inode *inode, 299int extent_clear_unlock_delalloc(struct inode *inode,
289 struct extent_io_tree *tree, 300 struct extent_io_tree *tree,
290 u64 start, u64 end, struct page *locked_page, 301 u64 start, u64 end, struct page *locked_page,
291 int unlock_page, 302 unsigned long op);
292 int clear_unlock,
293 int clear_delalloc, int clear_dirty,
294 int set_writeback,
295 int end_writeback,
296 int set_private2);
297#endif 303#endif
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index f19e1259a971..2d623aa0625f 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -878,7 +878,8 @@ again:
878 btrfs_put_ordered_extent(ordered); 878 btrfs_put_ordered_extent(ordered);
879 879
880 clear_extent_bits(&BTRFS_I(inode)->io_tree, start_pos, 880 clear_extent_bits(&BTRFS_I(inode)->io_tree, start_pos,
881 last_pos - 1, EXTENT_DIRTY | EXTENT_DELALLOC, 881 last_pos - 1, EXTENT_DIRTY | EXTENT_DELALLOC |
882 EXTENT_DO_ACCOUNTING,
882 GFP_NOFS); 883 GFP_NOFS);
883 unlock_extent(&BTRFS_I(inode)->io_tree, 884 unlock_extent(&BTRFS_I(inode)->io_tree,
884 start_pos, last_pos - 1, GFP_NOFS); 885 start_pos, last_pos - 1, GFP_NOFS);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 112e5aa85892..9e138b793dc7 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -424,9 +424,12 @@ again:
424 * and free up our temp pages. 424 * and free up our temp pages.
425 */ 425 */
426 extent_clear_unlock_delalloc(inode, 426 extent_clear_unlock_delalloc(inode,
427 &BTRFS_I(inode)->io_tree, 427 &BTRFS_I(inode)->io_tree,
428 start, end, NULL, 1, 0, 428 start, end, NULL,
429 0, 1, 1, 1, 0); 429 EXTENT_CLEAR_UNLOCK_PAGE | EXTENT_CLEAR_DIRTY |
430 EXTENT_CLEAR_DELALLOC |
431 EXTENT_CLEAR_ACCOUNTING |
432 EXTENT_SET_WRITEBACK | EXTENT_END_WRITEBACK);
430 ret = 0; 433 ret = 0;
431 goto free_pages_out; 434 goto free_pages_out;
432 } 435 }
@@ -637,11 +640,14 @@ static noinline int submit_compressed_extents(struct inode *inode,
637 * clear dirty, set writeback and unlock the pages. 640 * clear dirty, set writeback and unlock the pages.
638 */ 641 */
639 extent_clear_unlock_delalloc(inode, 642 extent_clear_unlock_delalloc(inode,
640 &BTRFS_I(inode)->io_tree, 643 &BTRFS_I(inode)->io_tree,
641 async_extent->start, 644 async_extent->start,
642 async_extent->start + 645 async_extent->start +
643 async_extent->ram_size - 1, 646 async_extent->ram_size - 1,
644 NULL, 1, 1, 0, 1, 1, 0, 0); 647 NULL, EXTENT_CLEAR_UNLOCK_PAGE |
648 EXTENT_CLEAR_UNLOCK |
649 EXTENT_CLEAR_DELALLOC |
650 EXTENT_CLEAR_DIRTY | EXTENT_SET_WRITEBACK);
645 651
646 ret = btrfs_submit_compressed_write(inode, 652 ret = btrfs_submit_compressed_write(inode,
647 async_extent->start, 653 async_extent->start,
@@ -712,9 +718,15 @@ static noinline int cow_file_range(struct inode *inode,
712 start, end, 0, NULL); 718 start, end, 0, NULL);
713 if (ret == 0) { 719 if (ret == 0) {
714 extent_clear_unlock_delalloc(inode, 720 extent_clear_unlock_delalloc(inode,
715 &BTRFS_I(inode)->io_tree, 721 &BTRFS_I(inode)->io_tree,
716 start, end, NULL, 1, 1, 722 start, end, NULL,
717 1, 1, 1, 1, 0); 723 EXTENT_CLEAR_UNLOCK_PAGE |
724 EXTENT_CLEAR_UNLOCK |
725 EXTENT_CLEAR_DELALLOC |
726 EXTENT_CLEAR_ACCOUNTING |
727 EXTENT_CLEAR_DIRTY |
728 EXTENT_SET_WRITEBACK |
729 EXTENT_END_WRITEBACK);
718 *nr_written = *nr_written + 730 *nr_written = *nr_written +
719 (end - start + PAGE_CACHE_SIZE) / PAGE_CACHE_SIZE; 731 (end - start + PAGE_CACHE_SIZE) / PAGE_CACHE_SIZE;
720 *page_started = 1; 732 *page_started = 1;
@@ -738,6 +750,8 @@ static noinline int cow_file_range(struct inode *inode,
738 btrfs_drop_extent_cache(inode, start, start + num_bytes - 1, 0); 750 btrfs_drop_extent_cache(inode, start, start + num_bytes - 1, 0);
739 751
740 while (disk_num_bytes > 0) { 752 while (disk_num_bytes > 0) {
753 unsigned long op;
754
741 cur_alloc_size = min(disk_num_bytes, root->fs_info->max_extent); 755 cur_alloc_size = min(disk_num_bytes, root->fs_info->max_extent);
742 ret = btrfs_reserve_extent(trans, root, cur_alloc_size, 756 ret = btrfs_reserve_extent(trans, root, cur_alloc_size,
743 root->sectorsize, 0, alloc_hint, 757 root->sectorsize, 0, alloc_hint,
@@ -789,10 +803,13 @@ static noinline int cow_file_range(struct inode *inode,
789 * Do set the Private2 bit so we know this page was properly 803 * Do set the Private2 bit so we know this page was properly
790 * setup for writepage 804 * setup for writepage
791 */ 805 */
806 op = unlock ? EXTENT_CLEAR_UNLOCK_PAGE : 0;
807 op |= EXTENT_CLEAR_UNLOCK | EXTENT_CLEAR_DELALLOC |
808 EXTENT_SET_PRIVATE2;
809
792 extent_clear_unlock_delalloc(inode, &BTRFS_I(inode)->io_tree, 810 extent_clear_unlock_delalloc(inode, &BTRFS_I(inode)->io_tree,
793 start, start + ram_size - 1, 811 start, start + ram_size - 1,
794 locked_page, unlock, 1, 812 locked_page, op);
795 1, 0, 0, 0, 1);
796 disk_num_bytes -= cur_alloc_size; 813 disk_num_bytes -= cur_alloc_size;
797 num_bytes -= cur_alloc_size; 814 num_bytes -= cur_alloc_size;
798 alloc_hint = ins.objectid + ins.offset; 815 alloc_hint = ins.objectid + ins.offset;
@@ -864,8 +881,8 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page,
864 u64 cur_end; 881 u64 cur_end;
865 int limit = 10 * 1024 * 1042; 882 int limit = 10 * 1024 * 1042;
866 883
867 clear_extent_bit(&BTRFS_I(inode)->io_tree, start, end, EXTENT_LOCKED | 884 clear_extent_bit(&BTRFS_I(inode)->io_tree, start, end, EXTENT_LOCKED,
868 EXTENT_DELALLOC, 1, 0, NULL, GFP_NOFS); 885 1, 0, NULL, GFP_NOFS);
869 while (start < end) { 886 while (start < end) {
870 async_cow = kmalloc(sizeof(*async_cow), GFP_NOFS); 887 async_cow = kmalloc(sizeof(*async_cow), GFP_NOFS);
871 async_cow->inode = inode; 888 async_cow->inode = inode;
@@ -1006,6 +1023,7 @@ next_slot:
1006 1023
1007 if (found_key.offset > cur_offset) { 1024 if (found_key.offset > cur_offset) {
1008 extent_end = found_key.offset; 1025 extent_end = found_key.offset;
1026 extent_type = 0;
1009 goto out_check; 1027 goto out_check;
1010 } 1028 }
1011 1029
@@ -1112,8 +1130,10 @@ out_check:
1112 BUG_ON(ret); 1130 BUG_ON(ret);
1113 1131
1114 extent_clear_unlock_delalloc(inode, &BTRFS_I(inode)->io_tree, 1132 extent_clear_unlock_delalloc(inode, &BTRFS_I(inode)->io_tree,
1115 cur_offset, cur_offset + num_bytes - 1, 1133 cur_offset, cur_offset + num_bytes - 1,
1116 locked_page, 1, 1, 1, 0, 0, 0, 1); 1134 locked_page, EXTENT_CLEAR_UNLOCK_PAGE |
1135 EXTENT_CLEAR_UNLOCK | EXTENT_CLEAR_DELALLOC |
1136 EXTENT_SET_PRIVATE2);
1117 cur_offset = extent_end; 1137 cur_offset = extent_end;
1118 if (cur_offset > end) 1138 if (cur_offset > end)
1119 break; 1139 break;
@@ -1178,15 +1198,17 @@ static int btrfs_split_extent_hook(struct inode *inode,
1178 root->fs_info->max_extent); 1198 root->fs_info->max_extent);
1179 1199
1180 /* 1200 /*
1181 * if we break a large extent up then leave delalloc_extents be, 1201 * if we break a large extent up then leave oustanding_extents
1182 * since we've already accounted for the large extent. 1202 * be, since we've already accounted for the large extent.
1183 */ 1203 */
1184 if (div64_u64(new_size + root->fs_info->max_extent - 1, 1204 if (div64_u64(new_size + root->fs_info->max_extent - 1,
1185 root->fs_info->max_extent) < num_extents) 1205 root->fs_info->max_extent) < num_extents)
1186 return 0; 1206 return 0;
1187 } 1207 }
1188 1208
1189 BTRFS_I(inode)->delalloc_extents++; 1209 spin_lock(&BTRFS_I(inode)->accounting_lock);
1210 BTRFS_I(inode)->outstanding_extents++;
1211 spin_unlock(&BTRFS_I(inode)->accounting_lock);
1190 1212
1191 return 0; 1213 return 0;
1192} 1214}
@@ -1217,7 +1239,9 @@ static int btrfs_merge_extent_hook(struct inode *inode,
1217 1239
1218 /* we're not bigger than the max, unreserve the space and go */ 1240 /* we're not bigger than the max, unreserve the space and go */
1219 if (new_size <= root->fs_info->max_extent) { 1241 if (new_size <= root->fs_info->max_extent) {
1220 BTRFS_I(inode)->delalloc_extents--; 1242 spin_lock(&BTRFS_I(inode)->accounting_lock);
1243 BTRFS_I(inode)->outstanding_extents--;
1244 spin_unlock(&BTRFS_I(inode)->accounting_lock);
1221 return 0; 1245 return 0;
1222 } 1246 }
1223 1247
@@ -1231,7 +1255,9 @@ static int btrfs_merge_extent_hook(struct inode *inode,
1231 root->fs_info->max_extent) > num_extents) 1255 root->fs_info->max_extent) > num_extents)
1232 return 0; 1256 return 0;
1233 1257
1234 BTRFS_I(inode)->delalloc_extents--; 1258 spin_lock(&BTRFS_I(inode)->accounting_lock);
1259 BTRFS_I(inode)->outstanding_extents--;
1260 spin_unlock(&BTRFS_I(inode)->accounting_lock);
1235 1261
1236 return 0; 1262 return 0;
1237} 1263}
@@ -1253,7 +1279,9 @@ static int btrfs_set_bit_hook(struct inode *inode, u64 start, u64 end,
1253 if (!(old & EXTENT_DELALLOC) && (bits & EXTENT_DELALLOC)) { 1279 if (!(old & EXTENT_DELALLOC) && (bits & EXTENT_DELALLOC)) {
1254 struct btrfs_root *root = BTRFS_I(inode)->root; 1280 struct btrfs_root *root = BTRFS_I(inode)->root;
1255 1281
1256 BTRFS_I(inode)->delalloc_extents++; 1282 spin_lock(&BTRFS_I(inode)->accounting_lock);
1283 BTRFS_I(inode)->outstanding_extents++;
1284 spin_unlock(&BTRFS_I(inode)->accounting_lock);
1257 btrfs_delalloc_reserve_space(root, inode, end - start + 1); 1285 btrfs_delalloc_reserve_space(root, inode, end - start + 1);
1258 spin_lock(&root->fs_info->delalloc_lock); 1286 spin_lock(&root->fs_info->delalloc_lock);
1259 BTRFS_I(inode)->delalloc_bytes += end - start + 1; 1287 BTRFS_I(inode)->delalloc_bytes += end - start + 1;
@@ -1281,8 +1309,12 @@ static int btrfs_clear_bit_hook(struct inode *inode,
1281 if ((state->state & EXTENT_DELALLOC) && (bits & EXTENT_DELALLOC)) { 1309 if ((state->state & EXTENT_DELALLOC) && (bits & EXTENT_DELALLOC)) {
1282 struct btrfs_root *root = BTRFS_I(inode)->root; 1310 struct btrfs_root *root = BTRFS_I(inode)->root;
1283 1311
1284 BTRFS_I(inode)->delalloc_extents--; 1312 if (bits & EXTENT_DO_ACCOUNTING) {
1285 btrfs_unreserve_metadata_for_delalloc(root, inode, 1); 1313 spin_lock(&BTRFS_I(inode)->accounting_lock);
1314 BTRFS_I(inode)->outstanding_extents--;
1315 spin_unlock(&BTRFS_I(inode)->accounting_lock);
1316 btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
1317 }
1286 1318
1287 spin_lock(&root->fs_info->delalloc_lock); 1319 spin_lock(&root->fs_info->delalloc_lock);
1288 if (state->end - state->start + 1 > 1320 if (state->end - state->start + 1 >
@@ -3598,12 +3630,14 @@ static int btrfs_dentry_delete(struct dentry *dentry)
3598{ 3630{
3599 struct btrfs_root *root; 3631 struct btrfs_root *root;
3600 3632
3601 if (!dentry->d_inode) 3633 if (!dentry->d_inode && !IS_ROOT(dentry))
3602 return 0; 3634 dentry = dentry->d_parent;
3603 3635
3604 root = BTRFS_I(dentry->d_inode)->root; 3636 if (dentry->d_inode) {
3605 if (btrfs_root_refs(&root->root_item) == 0) 3637 root = BTRFS_I(dentry->d_inode)->root;
3606 return 1; 3638 if (btrfs_root_refs(&root->root_item) == 0)
3639 return 1;
3640 }
3607 return 0; 3641 return 0;
3608} 3642}
3609 3643
@@ -4808,7 +4842,8 @@ static void btrfs_invalidatepage(struct page *page, unsigned long offset)
4808 */ 4842 */
4809 clear_extent_bit(tree, page_start, page_end, 4843 clear_extent_bit(tree, page_start, page_end,
4810 EXTENT_DIRTY | EXTENT_DELALLOC | 4844 EXTENT_DIRTY | EXTENT_DELALLOC |
4811 EXTENT_LOCKED, 1, 0, NULL, GFP_NOFS); 4845 EXTENT_LOCKED | EXTENT_DO_ACCOUNTING, 1, 0,
4846 NULL, GFP_NOFS);
4812 /* 4847 /*
4813 * whoever cleared the private bit is responsible 4848 * whoever cleared the private bit is responsible
4814 * for the finish_ordered_io 4849 * for the finish_ordered_io
@@ -4821,8 +4856,8 @@ static void btrfs_invalidatepage(struct page *page, unsigned long offset)
4821 lock_extent(tree, page_start, page_end, GFP_NOFS); 4856 lock_extent(tree, page_start, page_end, GFP_NOFS);
4822 } 4857 }
4823 clear_extent_bit(tree, page_start, page_end, 4858 clear_extent_bit(tree, page_start, page_end,
4824 EXTENT_LOCKED | EXTENT_DIRTY | EXTENT_DELALLOC, 4859 EXTENT_LOCKED | EXTENT_DIRTY | EXTENT_DELALLOC |
4825 1, 1, NULL, GFP_NOFS); 4860 EXTENT_DO_ACCOUNTING, 1, 1, NULL, GFP_NOFS);
4826 __btrfs_releasepage(page, GFP_NOFS); 4861 __btrfs_releasepage(page, GFP_NOFS);
4827 4862
4828 ClearPageChecked(page); 4863 ClearPageChecked(page);
@@ -4917,7 +4952,8 @@ again:
4917 * prepare_pages in the normal write path. 4952 * prepare_pages in the normal write path.
4918 */ 4953 */
4919 clear_extent_bits(&BTRFS_I(inode)->io_tree, page_start, page_end, 4954 clear_extent_bits(&BTRFS_I(inode)->io_tree, page_start, page_end,
4920 EXTENT_DIRTY | EXTENT_DELALLOC, GFP_NOFS); 4955 EXTENT_DIRTY | EXTENT_DELALLOC | EXTENT_DO_ACCOUNTING,
4956 GFP_NOFS);
4921 4957
4922 ret = btrfs_set_extent_delalloc(inode, page_start, page_end); 4958 ret = btrfs_set_extent_delalloc(inode, page_start, page_end);
4923 if (ret) { 4959 if (ret) {
@@ -5065,8 +5101,9 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
5065 return NULL; 5101 return NULL;
5066 ei->last_trans = 0; 5102 ei->last_trans = 0;
5067 ei->logged_trans = 0; 5103 ei->logged_trans = 0;
5068 ei->delalloc_extents = 0; 5104 ei->outstanding_extents = 0;
5069 ei->delalloc_reserved_extents = 0; 5105 ei->reserved_extents = 0;
5106 spin_lock_init(&ei->accounting_lock);
5070 btrfs_ordered_inode_tree_init(&ei->ordered_tree); 5107 btrfs_ordered_inode_tree_init(&ei->ordered_tree);
5071 INIT_LIST_HEAD(&ei->i_orphan); 5108 INIT_LIST_HEAD(&ei->i_orphan);
5072 INIT_LIST_HEAD(&ei->ordered_operations); 5109 INIT_LIST_HEAD(&ei->ordered_operations);
@@ -5805,6 +5842,6 @@ static const struct inode_operations btrfs_symlink_inode_operations = {
5805 .removexattr = btrfs_removexattr, 5842 .removexattr = btrfs_removexattr,
5806}; 5843};
5807 5844
5808struct dentry_operations btrfs_dentry_operations = { 5845const struct dentry_operations btrfs_dentry_operations = {
5809 .d_delete = btrfs_dentry_delete, 5846 .d_delete = btrfs_dentry_delete,
5810}; 5847};
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 9a780c8d0ac8..cdbb054102b9 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -830,6 +830,7 @@ out_up_write:
830out_unlock: 830out_unlock:
831 mutex_unlock(&inode->i_mutex); 831 mutex_unlock(&inode->i_mutex);
832 if (!err) { 832 if (!err) {
833 shrink_dcache_sb(root->fs_info->sb);
833 btrfs_invalidate_inodes(dest); 834 btrfs_invalidate_inodes(dest);
834 d_delete(dentry); 835 d_delete(dentry);
835 } 836 }
@@ -1122,8 +1123,10 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
1122 datao += off - key.offset; 1123 datao += off - key.offset;
1123 datal -= off - key.offset; 1124 datal -= off - key.offset;
1124 } 1125 }
1125 if (key.offset + datao + datal > off + len) 1126
1126 datal = off + len - key.offset - datao; 1127 if (key.offset + datal > off + len)
1128 datal = off + len - key.offset;
1129
1127 /* disko == 0 means it's a hole */ 1130 /* disko == 0 means it's a hole */
1128 if (!disko) 1131 if (!disko)
1129 datao = 0; 1132 datao = 0;
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index 897fba835f89..5799bc46a309 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -306,6 +306,12 @@ int btrfs_remove_ordered_extent(struct inode *inode,
306 tree->last = NULL; 306 tree->last = NULL;
307 set_bit(BTRFS_ORDERED_COMPLETE, &entry->flags); 307 set_bit(BTRFS_ORDERED_COMPLETE, &entry->flags);
308 308
309 spin_lock(&BTRFS_I(inode)->accounting_lock);
310 BTRFS_I(inode)->outstanding_extents--;
311 spin_unlock(&BTRFS_I(inode)->accounting_lock);
312 btrfs_unreserve_metadata_for_delalloc(BTRFS_I(inode)->root,
313 inode, 1);
314
309 spin_lock(&BTRFS_I(inode)->root->fs_info->ordered_extent_lock); 315 spin_lock(&BTRFS_I(inode)->root->fs_info->ordered_extent_lock);
310 list_del_init(&entry->root_extent_list); 316 list_del_init(&entry->root_extent_list);
311 317
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 361ad323faac..cfcc93c93a7b 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3518,7 +3518,7 @@ int btrfs_relocate_block_group(struct btrfs_root *extent_root, u64 group_start)
3518 BUG_ON(!rc->block_group); 3518 BUG_ON(!rc->block_group);
3519 3519
3520 btrfs_init_workers(&rc->workers, "relocate", 3520 btrfs_init_workers(&rc->workers, "relocate",
3521 fs_info->thread_pool_size); 3521 fs_info->thread_pool_size, NULL);
3522 3522
3523 rc->extent_root = extent_root; 3523 rc->extent_root = extent_root;
3524 btrfs_prepare_block_group_relocation(extent_root, rc->block_group); 3524 btrfs_prepare_block_group_relocation(extent_root, rc->block_group);
@@ -3701,7 +3701,7 @@ int btrfs_recover_relocation(struct btrfs_root *root)
3701 mapping_tree_init(&rc->reloc_root_tree); 3701 mapping_tree_init(&rc->reloc_root_tree);
3702 INIT_LIST_HEAD(&rc->reloc_roots); 3702 INIT_LIST_HEAD(&rc->reloc_roots);
3703 btrfs_init_workers(&rc->workers, "relocate", 3703 btrfs_init_workers(&rc->workers, "relocate",
3704 root->fs_info->thread_pool_size); 3704 root->fs_info->thread_pool_size, NULL);
3705 rc->extent_root = root->fs_info->extent_root; 3705 rc->extent_root = root->fs_info->extent_root;
3706 3706
3707 set_reloc_control(rc); 3707 set_reloc_control(rc);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 7827841b55cb..4edfdc2acc5f 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -137,11 +137,20 @@ static int start_log_trans(struct btrfs_trans_handle *trans,
137 137
138 mutex_lock(&root->log_mutex); 138 mutex_lock(&root->log_mutex);
139 if (root->log_root) { 139 if (root->log_root) {
140 if (!root->log_start_pid) {
141 root->log_start_pid = current->pid;
142 root->log_multiple_pids = false;
143 } else if (root->log_start_pid != current->pid) {
144 root->log_multiple_pids = true;
145 }
146
140 root->log_batch++; 147 root->log_batch++;
141 atomic_inc(&root->log_writers); 148 atomic_inc(&root->log_writers);
142 mutex_unlock(&root->log_mutex); 149 mutex_unlock(&root->log_mutex);
143 return 0; 150 return 0;
144 } 151 }
152 root->log_multiple_pids = false;
153 root->log_start_pid = current->pid;
145 mutex_lock(&root->fs_info->tree_log_mutex); 154 mutex_lock(&root->fs_info->tree_log_mutex);
146 if (!root->fs_info->log_root_tree) { 155 if (!root->fs_info->log_root_tree) {
147 ret = btrfs_init_log_root_tree(trans, root->fs_info); 156 ret = btrfs_init_log_root_tree(trans, root->fs_info);
@@ -1985,7 +1994,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
1985 if (atomic_read(&root->log_commit[(index1 + 1) % 2])) 1994 if (atomic_read(&root->log_commit[(index1 + 1) % 2]))
1986 wait_log_commit(trans, root, root->log_transid - 1); 1995 wait_log_commit(trans, root, root->log_transid - 1);
1987 1996
1988 while (1) { 1997 while (root->log_multiple_pids) {
1989 unsigned long batch = root->log_batch; 1998 unsigned long batch = root->log_batch;
1990 mutex_unlock(&root->log_mutex); 1999 mutex_unlock(&root->log_mutex);
1991 schedule_timeout_uninterruptible(1); 2000 schedule_timeout_uninterruptible(1);
@@ -2011,6 +2020,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
2011 root->log_batch = 0; 2020 root->log_batch = 0;
2012 root->log_transid++; 2021 root->log_transid++;
2013 log->log_transid = root->log_transid; 2022 log->log_transid = root->log_transid;
2023 root->log_start_pid = 0;
2014 smp_mb(); 2024 smp_mb();
2015 /* 2025 /*
2016 * log tree has been flushed to disk, new modifications of 2026 * log tree has been flushed to disk, new modifications of
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-25 16:15:37 -0500