Lines Matching refs:wb
86 static bool wb_io_lists_populated(struct bdi_writeback *wb) in wb_io_lists_populated() argument
88 if (wb_has_dirty_io(wb)) { in wb_io_lists_populated()
91 set_bit(WB_has_dirty_io, &wb->state); in wb_io_lists_populated()
92 WARN_ON_ONCE(!wb->avg_write_bandwidth); in wb_io_lists_populated()
93 atomic_long_add(wb->avg_write_bandwidth, in wb_io_lists_populated()
94 &wb->bdi->tot_write_bandwidth); in wb_io_lists_populated()
99 static void wb_io_lists_depopulated(struct bdi_writeback *wb) in wb_io_lists_depopulated() argument
101 if (wb_has_dirty_io(wb) && list_empty(&wb->b_dirty) && in wb_io_lists_depopulated()
102 list_empty(&wb->b_io) && list_empty(&wb->b_more_io)) { in wb_io_lists_depopulated()
103 clear_bit(WB_has_dirty_io, &wb->state); in wb_io_lists_depopulated()
104 WARN_ON_ONCE(atomic_long_sub_return(wb->avg_write_bandwidth, in wb_io_lists_depopulated()
105 &wb->bdi->tot_write_bandwidth) < 0); in wb_io_lists_depopulated()
120 struct bdi_writeback *wb, in inode_io_list_move_locked() argument
123 assert_spin_locked(&wb->list_lock); in inode_io_list_move_locked()
128 if (head != &wb->b_dirty_time) in inode_io_list_move_locked()
129 return wb_io_lists_populated(wb); in inode_io_list_move_locked()
131 wb_io_lists_depopulated(wb); in inode_io_list_move_locked()
144 struct bdi_writeback *wb) in inode_io_list_del_locked() argument
146 assert_spin_locked(&wb->list_lock); in inode_io_list_del_locked()
149 wb_io_lists_depopulated(wb); in inode_io_list_del_locked()
152 static void wb_wakeup(struct bdi_writeback *wb) in wb_wakeup() argument
154 spin_lock_bh(&wb->work_lock); in wb_wakeup()
155 if (test_bit(WB_registered, &wb->state)) in wb_wakeup()
156 mod_delayed_work(bdi_wq, &wb->dwork, 0); in wb_wakeup()
157 spin_unlock_bh(&wb->work_lock); in wb_wakeup()
160 static void finish_writeback_work(struct bdi_writeback *wb, in finish_writeback_work() argument
176 static void wb_queue_work(struct bdi_writeback *wb, in wb_queue_work() argument
179 trace_writeback_queue(wb, work); in wb_queue_work()
184 spin_lock_bh(&wb->work_lock); in wb_queue_work()
186 if (test_bit(WB_registered, &wb->state)) { in wb_queue_work()
187 list_add_tail(&work->list, &wb->work_list); in wb_queue_work()
188 mod_delayed_work(bdi_wq, &wb->dwork, 0); in wb_queue_work()
190 finish_writeback_work(wb, work); in wb_queue_work()
192 spin_unlock_bh(&wb->work_lock); in wb_queue_work()
252 struct bdi_writeback *wb = NULL; in __inode_attach_wb() local
259 wb = wb_get_create(bdi, memcg_css, GFP_ATOMIC); in __inode_attach_wb()
263 wb = wb_get_create(bdi, memcg_css, GFP_ATOMIC); in __inode_attach_wb()
268 if (!wb) in __inode_attach_wb()
269 wb = &bdi->wb; in __inode_attach_wb()
275 if (unlikely(cmpxchg(&inode->i_wb, NULL, wb))) in __inode_attach_wb()
276 wb_put(wb); in __inode_attach_wb()
291 __acquires(&wb->list_lock) in locked_inode_to_wb_and_lock_list()
294 struct bdi_writeback *wb = inode_to_wb(inode); in locked_inode_to_wb_and_lock_list() local
302 wb_get(wb); in locked_inode_to_wb_and_lock_list()
304 spin_lock(&wb->list_lock); in locked_inode_to_wb_and_lock_list()
307 if (likely(wb == inode->i_wb)) { in locked_inode_to_wb_and_lock_list()
308 wb_put(wb); /* @inode already has ref */ in locked_inode_to_wb_and_lock_list()
309 return wb; in locked_inode_to_wb_and_lock_list()
312 spin_unlock(&wb->list_lock); in locked_inode_to_wb_and_lock_list()
313 wb_put(wb); in locked_inode_to_wb_and_lock_list()
327 __acquires(&wb->list_lock) in inode_to_wb_and_lock_list()
565 wbc->wb = inode_to_wb(inode); in wbc_attach_and_unlock_inode()
568 wbc->wb_id = wbc->wb->memcg_css->id; in wbc_attach_and_unlock_inode()
575 wb_get(wbc->wb); in wbc_attach_and_unlock_inode()
585 if (unlikely(wb_dying(wbc->wb) && !css_is_dying(wbc->wb->memcg_css))) in wbc_attach_and_unlock_inode()
629 struct bdi_writeback *wb = wbc->wb; in wbc_detach_inode() local
635 if (!wb) in wbc_detach_inode()
662 wb->avg_write_bandwidth); in wbc_detach_inode()
708 wb_put(wbc->wb); in wbc_detach_inode()
709 wbc->wb = NULL; in wbc_detach_inode()
735 if (!wbc->wb || wbc->no_cgroup_owner) in wbc_account_cgroup_owner()
786 struct bdi_writeback *wb; in inode_congested() local
790 wb = unlocked_inode_to_wb_begin(inode, &lock_cookie); in inode_congested()
791 congested = wb_congested(wb, cong_bits); in inode_congested()
796 return wb_congested(&inode_to_bdi(inode)->wb, cong_bits); in inode_congested()
809 static long wb_split_bdi_pages(struct bdi_writeback *wb, long nr_pages) in wb_split_bdi_pages() argument
811 unsigned long this_bw = wb->avg_write_bandwidth; in wb_split_bdi_pages()
812 unsigned long tot_bw = atomic_long_read(&wb->bdi->tot_write_bandwidth); in wb_split_bdi_pages()
844 struct bdi_writeback *wb = list_entry(&bdi->wb_list, in bdi_split_work_to_wbs() local
850 list_for_each_entry_continue_rcu(wb, &bdi->wb_list, bdi_node) { in bdi_split_work_to_wbs()
862 if (!wb_has_dirty_io(wb) && in bdi_split_work_to_wbs()
864 list_empty(&wb->b_dirty_time))) in bdi_split_work_to_wbs()
866 if (skip_if_busy && writeback_in_progress(wb)) in bdi_split_work_to_wbs()
869 nr_pages = wb_split_bdi_pages(wb, base_work->nr_pages); in bdi_split_work_to_wbs()
876 wb_queue_work(wb, work); in bdi_split_work_to_wbs()
887 wb_queue_work(wb, work); in bdi_split_work_to_wbs()
894 wb_get(wb); in bdi_split_work_to_wbs()
895 last_wb = wb; in bdi_split_work_to_wbs()
923 struct bdi_writeback *wb; in cgroup_writeback_by_id() local
946 wb = wb_get_lookup(bdi, memcg_css); in cgroup_writeback_by_id()
947 if (!wb) { in cgroup_writeback_by_id()
962 mem_cgroup_wb_stats(wb, &filepages, &headroom, &dirty, in cgroup_writeback_by_id()
976 wb_queue_work(wb, work); in cgroup_writeback_by_id()
982 wb_put(wb); in cgroup_writeback_by_id()
1029 __acquires(&wb->list_lock) in locked_inode_to_wb_and_lock_list()
1031 struct bdi_writeback *wb = inode_to_wb(inode); in locked_inode_to_wb_and_lock_list() local
1034 spin_lock(&wb->list_lock); in locked_inode_to_wb_and_lock_list()
1035 return wb; in locked_inode_to_wb_and_lock_list()
1039 __acquires(&wb->list_lock) in inode_to_wb_and_lock_list()
1041 struct bdi_writeback *wb = inode_to_wb(inode); in inode_to_wb_and_lock_list() local
1043 spin_lock(&wb->list_lock); in inode_to_wb_and_lock_list()
1044 return wb; in inode_to_wb_and_lock_list()
1047 static long wb_split_bdi_pages(struct bdi_writeback *wb, long nr_pages) in wb_split_bdi_pages() argument
1058 if (!skip_if_busy || !writeback_in_progress(&bdi->wb)) { in bdi_split_work_to_wbs()
1060 wb_queue_work(&bdi->wb, base_work); in bdi_split_work_to_wbs()
1077 static void wb_start_writeback(struct bdi_writeback *wb, enum wb_reason reason) in wb_start_writeback() argument
1079 if (!wb_has_dirty_io(wb)) in wb_start_writeback()
1090 if (test_bit(WB_start_all, &wb->state) || in wb_start_writeback()
1091 test_and_set_bit(WB_start_all, &wb->state)) in wb_start_writeback()
1094 wb->start_all_reason = reason; in wb_start_writeback()
1095 wb_wakeup(wb); in wb_start_writeback()
1108 void wb_start_background_writeback(struct bdi_writeback *wb) in wb_start_background_writeback() argument
1114 trace_writeback_wake_background(wb); in wb_start_background_writeback()
1115 wb_wakeup(wb); in wb_start_background_writeback()
1123 struct bdi_writeback *wb; in inode_io_list_del() local
1125 wb = inode_to_wb_and_lock_list(inode); in inode_io_list_del()
1126 inode_io_list_del_locked(inode, wb); in inode_io_list_del()
1127 spin_unlock(&wb->list_lock); in inode_io_list_del()
1175 static void redirty_tail(struct inode *inode, struct bdi_writeback *wb) in redirty_tail() argument
1177 if (!list_empty(&wb->b_dirty)) { in redirty_tail()
1180 tail = wb_inode(wb->b_dirty.next); in redirty_tail()
1184 inode_io_list_move_locked(inode, wb, &wb->b_dirty); in redirty_tail()
1190 static void requeue_io(struct inode *inode, struct bdi_writeback *wb) in requeue_io() argument
1192 inode_io_list_move_locked(inode, wb, &wb->b_more_io); in requeue_io()
1292 static void queue_io(struct bdi_writeback *wb, struct wb_writeback_work *work) in queue_io() argument
1296 assert_spin_locked(&wb->list_lock); in queue_io()
1297 list_splice_init(&wb->b_more_io, &wb->b_io); in queue_io()
1298 moved = move_expired_inodes(&wb->b_dirty, &wb->b_io, 0, work); in queue_io()
1299 moved += move_expired_inodes(&wb->b_dirty_time, &wb->b_io, in queue_io()
1302 wb_io_lists_populated(wb); in queue_io()
1303 trace_writeback_queue_io(wb, work, moved); in queue_io()
1377 static void requeue_inode(struct inode *inode, struct bdi_writeback *wb, in requeue_inode() argument
1397 redirty_tail(inode, wb); in requeue_inode()
1408 requeue_io(inode, wb); in requeue_inode()
1417 redirty_tail(inode, wb); in requeue_inode()
1425 redirty_tail(inode, wb); in requeue_inode()
1428 inode_io_list_move_locked(inode, wb, &wb->b_dirty_time); in requeue_inode()
1431 inode_io_list_del_locked(inode, wb); in requeue_inode()
1530 struct bdi_writeback *wb; in writeback_single_inode() local
1569 wb = inode_to_wb_and_lock_list(inode); in writeback_single_inode()
1576 inode_io_list_del_locked(inode, wb); in writeback_single_inode()
1577 spin_unlock(&wb->list_lock); in writeback_single_inode()
1584 static long writeback_chunk_size(struct bdi_writeback *wb, in writeback_chunk_size() argument
1605 pages = min(wb->avg_write_bandwidth / 2, in writeback_chunk_size()
1625 struct bdi_writeback *wb, in writeback_sb_inodes() argument
1642 while (!list_empty(&wb->b_io)) { in writeback_sb_inodes()
1643 struct inode *inode = wb_inode(wb->b_io.prev); in writeback_sb_inodes()
1653 redirty_tail(inode, wb); in writeback_sb_inodes()
1673 redirty_tail(inode, wb); in writeback_sb_inodes()
1687 requeue_io(inode, wb); in writeback_sb_inodes()
1691 spin_unlock(&wb->list_lock); in writeback_sb_inodes()
1702 spin_lock(&wb->list_lock); in writeback_sb_inodes()
1708 write_chunk = writeback_chunk_size(wb, work); in writeback_sb_inodes()
1747 if (unlikely(tmp_wb != wb)) { in writeback_sb_inodes()
1749 spin_lock(&wb->list_lock); in writeback_sb_inodes()
1766 static long __writeback_inodes_wb(struct bdi_writeback *wb, in __writeback_inodes_wb() argument
1772 while (!list_empty(&wb->b_io)) { in __writeback_inodes_wb()
1773 struct inode *inode = wb_inode(wb->b_io.prev); in __writeback_inodes_wb()
1782 redirty_tail(inode, wb); in __writeback_inodes_wb()
1785 wrote += writeback_sb_inodes(sb, wb, work); in __writeback_inodes_wb()
1800 static long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages, in writeback_inodes_wb() argument
1812 spin_lock(&wb->list_lock); in writeback_inodes_wb()
1813 if (list_empty(&wb->b_io)) in writeback_inodes_wb()
1814 queue_io(wb, &work); in writeback_inodes_wb()
1815 __writeback_inodes_wb(wb, &work); in writeback_inodes_wb()
1816 spin_unlock(&wb->list_lock); in writeback_inodes_wb()
1837 static long wb_writeback(struct bdi_writeback *wb, in wb_writeback() argument
1851 spin_lock(&wb->list_lock); in wb_writeback()
1866 !list_empty(&wb->work_list)) in wb_writeback()
1873 if (work->for_background && !wb_over_bg_thresh(wb)) in wb_writeback()
1888 trace_writeback_start(wb, work); in wb_writeback()
1889 if (list_empty(&wb->b_io)) in wb_writeback()
1890 queue_io(wb, work); in wb_writeback()
1892 progress = writeback_sb_inodes(work->sb, wb, work); in wb_writeback()
1894 progress = __writeback_inodes_wb(wb, work); in wb_writeback()
1895 trace_writeback_written(wb, work); in wb_writeback()
1897 wb_update_bandwidth(wb, wb_start); in wb_writeback()
1912 if (list_empty(&wb->b_more_io)) in wb_writeback()
1919 trace_writeback_wait(wb, work); in wb_writeback()
1920 inode = wb_inode(wb->b_more_io.prev); in wb_writeback()
1922 spin_unlock(&wb->list_lock); in wb_writeback()
1925 spin_lock(&wb->list_lock); in wb_writeback()
1927 spin_unlock(&wb->list_lock); in wb_writeback()
1936 static struct wb_writeback_work *get_next_work_item(struct bdi_writeback *wb) in get_next_work_item() argument
1940 spin_lock_bh(&wb->work_lock); in get_next_work_item()
1941 if (!list_empty(&wb->work_list)) { in get_next_work_item()
1942 work = list_entry(wb->work_list.next, in get_next_work_item()
1946 spin_unlock_bh(&wb->work_lock); in get_next_work_item()
1950 static long wb_check_background_flush(struct bdi_writeback *wb) in wb_check_background_flush() argument
1952 if (wb_over_bg_thresh(wb)) { in wb_check_background_flush()
1962 return wb_writeback(wb, &work); in wb_check_background_flush()
1968 static long wb_check_old_data_flush(struct bdi_writeback *wb) in wb_check_old_data_flush() argument
1979 expired = wb->last_old_flush + in wb_check_old_data_flush()
1984 wb->last_old_flush = jiffies; in wb_check_old_data_flush()
1996 return wb_writeback(wb, &work); in wb_check_old_data_flush()
2002 static long wb_check_start_all(struct bdi_writeback *wb) in wb_check_start_all() argument
2006 if (!test_bit(WB_start_all, &wb->state)) in wb_check_start_all()
2012 .nr_pages = wb_split_bdi_pages(wb, nr_pages), in wb_check_start_all()
2015 .reason = wb->start_all_reason, in wb_check_start_all()
2018 nr_pages = wb_writeback(wb, &work); in wb_check_start_all()
2021 clear_bit(WB_start_all, &wb->state); in wb_check_start_all()
2029 static long wb_do_writeback(struct bdi_writeback *wb) in wb_do_writeback() argument
2034 set_bit(WB_writeback_running, &wb->state); in wb_do_writeback()
2035 while ((work = get_next_work_item(wb)) != NULL) { in wb_do_writeback()
2036 trace_writeback_exec(wb, work); in wb_do_writeback()
2037 wrote += wb_writeback(wb, work); in wb_do_writeback()
2038 finish_writeback_work(wb, work); in wb_do_writeback()
2044 wrote += wb_check_start_all(wb); in wb_do_writeback()
2049 wrote += wb_check_old_data_flush(wb); in wb_do_writeback()
2050 wrote += wb_check_background_flush(wb); in wb_do_writeback()
2051 clear_bit(WB_writeback_running, &wb->state); in wb_do_writeback()
2062 struct bdi_writeback *wb = container_of(to_delayed_work(work), in wb_workfn() local
2066 set_worker_desc("flush-%s", dev_name(wb->bdi->dev)); in wb_workfn()
2070 !test_bit(WB_registered, &wb->state))) { in wb_workfn()
2078 pages_written = wb_do_writeback(wb); in wb_workfn()
2080 } while (!list_empty(&wb->work_list)); in wb_workfn()
2087 pages_written = writeback_inodes_wb(wb, 1024, in wb_workfn()
2092 if (!list_empty(&wb->work_list)) in wb_workfn()
2093 wb_wakeup(wb); in wb_workfn()
2094 else if (wb_has_dirty_io(wb) && dirty_writeback_interval) in wb_workfn()
2095 wb_wakeup_delayed(wb); in wb_workfn()
2107 struct bdi_writeback *wb; in __wakeup_flusher_threads_bdi() local
2112 list_for_each_entry_rcu(wb, &bdi->wb_list, bdi_node) in __wakeup_flusher_threads_bdi()
2113 wb_start_writeback(wb, reason); in __wakeup_flusher_threads_bdi()
2167 struct bdi_writeback *wb; in wakeup_dirtytime_writeback() local
2169 list_for_each_entry_rcu(wb, &bdi->wb_list, bdi_node) in wakeup_dirtytime_writeback()
2170 if (!list_empty(&wb->b_dirty_time)) in wakeup_dirtytime_writeback()
2171 wb_wakeup(wb); in wakeup_dirtytime_writeback()
2315 struct bdi_writeback *wb; in __mark_inode_dirty() local
2319 wb = locked_inode_to_wb_and_lock_list(inode); in __mark_inode_dirty()
2321 WARN(bdi_cap_writeback_dirty(wb->bdi) && in __mark_inode_dirty()
2322 !test_bit(WB_registered, &wb->state), in __mark_inode_dirty()
2323 "bdi-%s not registered\n", wb->bdi->name); in __mark_inode_dirty()
2330 dirty_list = &wb->b_dirty; in __mark_inode_dirty()
2332 dirty_list = &wb->b_dirty_time; in __mark_inode_dirty()
2334 wakeup_bdi = inode_io_list_move_locked(inode, wb, in __mark_inode_dirty()
2337 spin_unlock(&wb->list_lock); in __mark_inode_dirty()
2346 if (bdi_cap_writeback_dirty(wb->bdi) && wakeup_bdi) in __mark_inode_dirty()
2347 wb_wakeup_delayed(wb); in __mark_inode_dirty()