Lines Matching +full:ti +full:- +full:sci
1 // SPDX-License-Identifier: GPL-2.0+
3 * segment.c - NILFS segment constructor.
5 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
18 #include <linux/backing-dev.h>
82 * wrapper functions of stage count (nilfs_sc_info->sc_stage.scnt). Users of
90 static inline void nilfs_sc_cstage_inc(struct nilfs_sc_info *sci) in nilfs_sc_cstage_inc() argument
92 sci->sc_stage.scnt++; in nilfs_sc_cstage_inc()
93 trace_nilfs2_collection_stage_transition(sci); in nilfs_sc_cstage_inc()
96 static inline void nilfs_sc_cstage_set(struct nilfs_sc_info *sci, int next_scnt) in nilfs_sc_cstage_set() argument
98 sci->sc_stage.scnt = next_scnt; in nilfs_sc_cstage_set()
99 trace_nilfs2_collection_stage_transition(sci); in nilfs_sc_cstage_set()
102 static inline int nilfs_sc_cstage_get(struct nilfs_sc_info *sci) in nilfs_sc_cstage_get() argument
104 return sci->sc_stage.scnt; in nilfs_sc_cstage_get()
139 ((__s32)(b) - (__s32)(a) < 0))
142 ((__s32)(a) - (__s32)(b) >= 0))
147 struct nilfs_transaction_info *ti) in nilfs_prepare_segment_lock() argument
149 struct nilfs_transaction_info *cur_ti = current->journal_info; in nilfs_prepare_segment_lock()
153 if (cur_ti->ti_magic == NILFS_TI_MAGIC) in nilfs_prepare_segment_lock()
154 return ++cur_ti->ti_count; in nilfs_prepare_segment_lock()
162 save = current->journal_info; in nilfs_prepare_segment_lock()
164 if (!ti) { in nilfs_prepare_segment_lock()
165 ti = kmem_cache_alloc(nilfs_transaction_cachep, GFP_NOFS); in nilfs_prepare_segment_lock()
166 if (!ti) in nilfs_prepare_segment_lock()
167 return -ENOMEM; in nilfs_prepare_segment_lock()
168 ti->ti_flags = NILFS_TI_DYNAMIC_ALLOC; in nilfs_prepare_segment_lock()
170 ti->ti_flags = 0; in nilfs_prepare_segment_lock()
172 ti->ti_count = 0; in nilfs_prepare_segment_lock()
173 ti->ti_save = save; in nilfs_prepare_segment_lock()
174 ti->ti_magic = NILFS_TI_MAGIC; in nilfs_prepare_segment_lock()
175 current->journal_info = ti; in nilfs_prepare_segment_lock()
180 * nilfs_transaction_begin - start indivisible file operations.
182 * @ti: nilfs_transaction_info
193 * the outermost call. If a pre-allocated struct is given to @ti, it is used
202 * %-ENOMEM - Insufficient memory available.
204 * %-ENOSPC - No space left on device
207 struct nilfs_transaction_info *ti, in nilfs_transaction_begin() argument
211 int ret = nilfs_prepare_segment_lock(sb, ti); in nilfs_transaction_begin()
217 trace_ti = current->journal_info; in nilfs_transaction_begin()
220 trace_ti->ti_count, trace_ti->ti_flags, in nilfs_transaction_begin()
227 nilfs = sb->s_fs_info; in nilfs_transaction_begin()
228 down_read(&nilfs->ns_segctor_sem); in nilfs_transaction_begin()
230 up_read(&nilfs->ns_segctor_sem); in nilfs_transaction_begin()
231 ret = -ENOSPC; in nilfs_transaction_begin()
235 trace_ti = current->journal_info; in nilfs_transaction_begin()
236 trace_nilfs2_transaction_transition(sb, trace_ti, trace_ti->ti_count, in nilfs_transaction_begin()
237 trace_ti->ti_flags, in nilfs_transaction_begin()
242 ti = current->journal_info; in nilfs_transaction_begin()
243 current->journal_info = ti->ti_save; in nilfs_transaction_begin()
244 if (ti->ti_flags & NILFS_TI_DYNAMIC_ALLOC) in nilfs_transaction_begin()
245 kmem_cache_free(nilfs_transaction_cachep, ti); in nilfs_transaction_begin()
251 * nilfs_transaction_commit - commit indivisible file operations.
263 struct nilfs_transaction_info *ti = current->journal_info; in nilfs_transaction_commit() local
264 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_transaction_commit()
267 BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC); in nilfs_transaction_commit()
268 ti->ti_flags |= NILFS_TI_COMMIT; in nilfs_transaction_commit()
269 if (ti->ti_count > 0) { in nilfs_transaction_commit()
270 ti->ti_count--; in nilfs_transaction_commit()
271 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_commit()
272 ti->ti_flags, TRACE_NILFS2_TRANSACTION_COMMIT); in nilfs_transaction_commit()
275 if (nilfs->ns_writer) { in nilfs_transaction_commit()
276 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_transaction_commit() local
278 if (ti->ti_flags & NILFS_TI_COMMIT) in nilfs_transaction_commit()
279 nilfs_segctor_start_timer(sci); in nilfs_transaction_commit()
280 if (atomic_read(&nilfs->ns_ndirtyblks) > sci->sc_watermark) in nilfs_transaction_commit()
281 nilfs_segctor_do_flush(sci, 0); in nilfs_transaction_commit()
283 up_read(&nilfs->ns_segctor_sem); in nilfs_transaction_commit()
284 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_commit()
285 ti->ti_flags, TRACE_NILFS2_TRANSACTION_COMMIT); in nilfs_transaction_commit()
287 current->journal_info = ti->ti_save; in nilfs_transaction_commit()
289 if (ti->ti_flags & NILFS_TI_SYNC) in nilfs_transaction_commit()
291 if (ti->ti_flags & NILFS_TI_DYNAMIC_ALLOC) in nilfs_transaction_commit()
292 kmem_cache_free(nilfs_transaction_cachep, ti); in nilfs_transaction_commit()
299 struct nilfs_transaction_info *ti = current->journal_info; in nilfs_transaction_abort() local
300 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_transaction_abort()
302 BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC); in nilfs_transaction_abort()
303 if (ti->ti_count > 0) { in nilfs_transaction_abort()
304 ti->ti_count--; in nilfs_transaction_abort()
305 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_abort()
306 ti->ti_flags, TRACE_NILFS2_TRANSACTION_ABORT); in nilfs_transaction_abort()
309 up_read(&nilfs->ns_segctor_sem); in nilfs_transaction_abort()
311 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_abort()
312 ti->ti_flags, TRACE_NILFS2_TRANSACTION_ABORT); in nilfs_transaction_abort()
314 current->journal_info = ti->ti_save; in nilfs_transaction_abort()
315 if (ti->ti_flags & NILFS_TI_DYNAMIC_ALLOC) in nilfs_transaction_abort()
316 kmem_cache_free(nilfs_transaction_cachep, ti); in nilfs_transaction_abort()
322 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_relax_pressure_in_lock()
323 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_relax_pressure_in_lock() local
325 if (sb_rdonly(sb) || unlikely(!sci) || !sci->sc_flush_request) in nilfs_relax_pressure_in_lock()
328 set_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags); in nilfs_relax_pressure_in_lock()
329 up_read(&nilfs->ns_segctor_sem); in nilfs_relax_pressure_in_lock()
331 down_write(&nilfs->ns_segctor_sem); in nilfs_relax_pressure_in_lock()
332 if (sci->sc_flush_request && in nilfs_relax_pressure_in_lock()
333 test_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags)) { in nilfs_relax_pressure_in_lock()
334 struct nilfs_transaction_info *ti = current->journal_info; in nilfs_relax_pressure_in_lock() local
336 ti->ti_flags |= NILFS_TI_WRITER; in nilfs_relax_pressure_in_lock()
337 nilfs_segctor_do_immediate_flush(sci); in nilfs_relax_pressure_in_lock()
338 ti->ti_flags &= ~NILFS_TI_WRITER; in nilfs_relax_pressure_in_lock()
340 downgrade_write(&nilfs->ns_segctor_sem); in nilfs_relax_pressure_in_lock()
344 struct nilfs_transaction_info *ti, in nilfs_transaction_lock() argument
347 struct nilfs_transaction_info *cur_ti = current->journal_info; in nilfs_transaction_lock()
348 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_transaction_lock()
349 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_transaction_lock() local
352 ti->ti_flags = NILFS_TI_WRITER; in nilfs_transaction_lock()
353 ti->ti_count = 0; in nilfs_transaction_lock()
354 ti->ti_save = cur_ti; in nilfs_transaction_lock()
355 ti->ti_magic = NILFS_TI_MAGIC; in nilfs_transaction_lock()
356 current->journal_info = ti; in nilfs_transaction_lock()
359 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_lock()
360 ti->ti_flags, TRACE_NILFS2_TRANSACTION_TRYLOCK); in nilfs_transaction_lock()
362 down_write(&nilfs->ns_segctor_sem); in nilfs_transaction_lock()
363 if (!test_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags)) in nilfs_transaction_lock()
366 nilfs_segctor_do_immediate_flush(sci); in nilfs_transaction_lock()
368 up_write(&nilfs->ns_segctor_sem); in nilfs_transaction_lock()
372 ti->ti_flags |= NILFS_TI_GC; in nilfs_transaction_lock()
374 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_lock()
375 ti->ti_flags, TRACE_NILFS2_TRANSACTION_LOCK); in nilfs_transaction_lock()
380 struct nilfs_transaction_info *ti = current->journal_info; in nilfs_transaction_unlock() local
381 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_transaction_unlock()
383 BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC); in nilfs_transaction_unlock()
384 BUG_ON(ti->ti_count > 0); in nilfs_transaction_unlock()
386 up_write(&nilfs->ns_segctor_sem); in nilfs_transaction_unlock()
387 current->journal_info = ti->ti_save; in nilfs_transaction_unlock()
389 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_unlock()
390 ti->ti_flags, TRACE_NILFS2_TRANSACTION_UNLOCK); in nilfs_transaction_unlock()
393 static void *nilfs_segctor_map_segsum_entry(struct nilfs_sc_info *sci, in nilfs_segctor_map_segsum_entry() argument
397 struct nilfs_segment_buffer *segbuf = sci->sc_curseg; in nilfs_segctor_map_segsum_entry()
398 unsigned int blocksize = sci->sc_super->s_blocksize; in nilfs_segctor_map_segsum_entry()
401 if (unlikely(ssp->offset + bytes > blocksize)) { in nilfs_segctor_map_segsum_entry()
402 ssp->offset = 0; in nilfs_segctor_map_segsum_entry()
403 BUG_ON(NILFS_SEGBUF_BH_IS_LAST(ssp->bh, in nilfs_segctor_map_segsum_entry()
404 &segbuf->sb_segsum_buffers)); in nilfs_segctor_map_segsum_entry()
405 ssp->bh = NILFS_SEGBUF_NEXT_BH(ssp->bh); in nilfs_segctor_map_segsum_entry()
407 p = ssp->bh->b_data + ssp->offset; in nilfs_segctor_map_segsum_entry()
408 ssp->offset += bytes; in nilfs_segctor_map_segsum_entry()
413 * nilfs_segctor_reset_segment_buffer - reset the current segment buffer
414 * @sci: nilfs_sc_info
416 static int nilfs_segctor_reset_segment_buffer(struct nilfs_sc_info *sci) in nilfs_segctor_reset_segment_buffer() argument
418 struct nilfs_segment_buffer *segbuf = sci->sc_curseg; in nilfs_segctor_reset_segment_buffer()
426 err = nilfs_segbuf_reset(segbuf, flags, sci->sc_seg_ctime, sci->sc_cno); in nilfs_segctor_reset_segment_buffer()
430 sumbh = NILFS_SEGBUF_FIRST_BH(&segbuf->sb_segsum_buffers); in nilfs_segctor_reset_segment_buffer()
431 sumbytes = segbuf->sb_sum.sumbytes; in nilfs_segctor_reset_segment_buffer()
432 sci->sc_finfo_ptr.bh = sumbh; sci->sc_finfo_ptr.offset = sumbytes; in nilfs_segctor_reset_segment_buffer()
433 sci->sc_binfo_ptr.bh = sumbh; sci->sc_binfo_ptr.offset = sumbytes; in nilfs_segctor_reset_segment_buffer()
434 sci->sc_blk_cnt = sci->sc_datablk_cnt = 0; in nilfs_segctor_reset_segment_buffer()
438 static int nilfs_segctor_feed_segment(struct nilfs_sc_info *sci) in nilfs_segctor_feed_segment() argument
440 sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks; in nilfs_segctor_feed_segment()
441 if (NILFS_SEGBUF_IS_LAST(sci->sc_curseg, &sci->sc_segbufs)) in nilfs_segctor_feed_segment()
442 return -E2BIG; /* in nilfs_segctor_feed_segment()
446 sci->sc_curseg = NILFS_NEXT_SEGBUF(sci->sc_curseg); in nilfs_segctor_feed_segment()
447 return nilfs_segctor_reset_segment_buffer(sci); in nilfs_segctor_feed_segment()
450 static int nilfs_segctor_add_super_root(struct nilfs_sc_info *sci) in nilfs_segctor_add_super_root() argument
452 struct nilfs_segment_buffer *segbuf = sci->sc_curseg; in nilfs_segctor_add_super_root()
455 if (segbuf->sb_sum.nblocks >= segbuf->sb_rest_blocks) { in nilfs_segctor_add_super_root()
456 err = nilfs_segctor_feed_segment(sci); in nilfs_segctor_add_super_root()
459 segbuf = sci->sc_curseg; in nilfs_segctor_add_super_root()
461 err = nilfs_segbuf_extend_payload(segbuf, &segbuf->sb_super_root); in nilfs_segctor_add_super_root()
463 segbuf->sb_sum.flags |= NILFS_SS_SR; in nilfs_segctor_add_super_root()
471 struct nilfs_sc_info *sci, const struct nilfs_segsum_pointer *ssp, in nilfs_segctor_segsum_block_required() argument
474 unsigned int blocksize = sci->sc_super->s_blocksize; in nilfs_segctor_segsum_block_required()
477 return ssp->offset + binfo_size + in nilfs_segctor_segsum_block_required()
478 (!sci->sc_blk_cnt ? sizeof(struct nilfs_finfo) : 0) > in nilfs_segctor_segsum_block_required()
482 static void nilfs_segctor_begin_finfo(struct nilfs_sc_info *sci, in nilfs_segctor_begin_finfo() argument
485 sci->sc_curseg->sb_sum.nfinfo++; in nilfs_segctor_begin_finfo()
486 sci->sc_binfo_ptr = sci->sc_finfo_ptr; in nilfs_segctor_begin_finfo()
488 sci, &sci->sc_binfo_ptr, sizeof(struct nilfs_finfo)); in nilfs_segctor_begin_finfo()
490 if (NILFS_I(inode)->i_root && in nilfs_segctor_begin_finfo()
491 !test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags)) in nilfs_segctor_begin_finfo()
492 set_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); in nilfs_segctor_begin_finfo()
496 static void nilfs_segctor_end_finfo(struct nilfs_sc_info *sci, in nilfs_segctor_end_finfo() argument
504 if (sci->sc_blk_cnt == 0) in nilfs_segctor_end_finfo()
509 if (test_bit(NILFS_I_GCINODE, &ii->i_state)) in nilfs_segctor_end_finfo()
510 cno = ii->i_cno; in nilfs_segctor_end_finfo()
511 else if (NILFS_ROOT_METADATA_FILE(inode->i_ino)) in nilfs_segctor_end_finfo()
514 cno = sci->sc_cno; in nilfs_segctor_end_finfo()
516 finfo = nilfs_segctor_map_segsum_entry(sci, &sci->sc_finfo_ptr, in nilfs_segctor_end_finfo()
518 finfo->fi_ino = cpu_to_le64(inode->i_ino); in nilfs_segctor_end_finfo()
519 finfo->fi_nblocks = cpu_to_le32(sci->sc_blk_cnt); in nilfs_segctor_end_finfo()
520 finfo->fi_ndatablk = cpu_to_le32(sci->sc_datablk_cnt); in nilfs_segctor_end_finfo()
521 finfo->fi_cno = cpu_to_le64(cno); in nilfs_segctor_end_finfo()
523 segbuf = sci->sc_curseg; in nilfs_segctor_end_finfo()
524 segbuf->sb_sum.sumbytes = sci->sc_binfo_ptr.offset + in nilfs_segctor_end_finfo()
525 sci->sc_super->s_blocksize * (segbuf->sb_sum.nsumblk - 1); in nilfs_segctor_end_finfo()
526 sci->sc_finfo_ptr = sci->sc_binfo_ptr; in nilfs_segctor_end_finfo()
527 sci->sc_blk_cnt = sci->sc_datablk_cnt = 0; in nilfs_segctor_end_finfo()
530 static int nilfs_segctor_add_file_block(struct nilfs_sc_info *sci, in nilfs_segctor_add_file_block() argument
539 segbuf = sci->sc_curseg; in nilfs_segctor_add_file_block()
541 sci, &sci->sc_binfo_ptr, binfo_size); in nilfs_segctor_add_file_block()
542 if (segbuf->sb_sum.nblocks + required + 1 > segbuf->sb_rest_blocks) { in nilfs_segctor_add_file_block()
543 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_add_file_block()
544 err = nilfs_segctor_feed_segment(sci); in nilfs_segctor_add_file_block()
554 if (sci->sc_blk_cnt == 0) in nilfs_segctor_add_file_block()
555 nilfs_segctor_begin_finfo(sci, inode); in nilfs_segctor_add_file_block()
557 nilfs_segctor_map_segsum_entry(sci, &sci->sc_binfo_ptr, binfo_size); in nilfs_segctor_add_file_block()
560 sci->sc_blk_cnt++; in nilfs_segctor_add_file_block()
568 static int nilfs_collect_file_data(struct nilfs_sc_info *sci, in nilfs_collect_file_data() argument
573 err = nilfs_bmap_propagate(NILFS_I(inode)->i_bmap, bh); in nilfs_collect_file_data()
577 err = nilfs_segctor_add_file_block(sci, bh, inode, in nilfs_collect_file_data()
580 sci->sc_datablk_cnt++; in nilfs_collect_file_data()
584 static int nilfs_collect_file_node(struct nilfs_sc_info *sci, in nilfs_collect_file_node() argument
588 return nilfs_bmap_propagate(NILFS_I(inode)->i_bmap, bh); in nilfs_collect_file_node()
591 static int nilfs_collect_file_bmap(struct nilfs_sc_info *sci, in nilfs_collect_file_bmap() argument
596 return nilfs_segctor_add_file_block(sci, bh, inode, sizeof(__le64)); in nilfs_collect_file_bmap()
599 static void nilfs_write_file_data_binfo(struct nilfs_sc_info *sci, in nilfs_write_file_data_binfo() argument
604 sci, ssp, sizeof(*binfo_v)); in nilfs_write_file_data_binfo()
605 *binfo_v = binfo->bi_v; in nilfs_write_file_data_binfo()
608 static void nilfs_write_file_node_binfo(struct nilfs_sc_info *sci, in nilfs_write_file_node_binfo() argument
613 sci, ssp, sizeof(*vblocknr)); in nilfs_write_file_node_binfo()
614 *vblocknr = binfo->bi_v.bi_vblocknr; in nilfs_write_file_node_binfo()
625 static int nilfs_collect_dat_data(struct nilfs_sc_info *sci, in nilfs_collect_dat_data() argument
630 err = nilfs_bmap_propagate(NILFS_I(inode)->i_bmap, bh); in nilfs_collect_dat_data()
634 err = nilfs_segctor_add_file_block(sci, bh, inode, sizeof(__le64)); in nilfs_collect_dat_data()
636 sci->sc_datablk_cnt++; in nilfs_collect_dat_data()
640 static int nilfs_collect_dat_bmap(struct nilfs_sc_info *sci, in nilfs_collect_dat_bmap() argument
644 return nilfs_segctor_add_file_block(sci, bh, inode, in nilfs_collect_dat_bmap()
648 static void nilfs_write_dat_data_binfo(struct nilfs_sc_info *sci, in nilfs_write_dat_data_binfo() argument
652 __le64 *blkoff = nilfs_segctor_map_segsum_entry(sci, ssp, in nilfs_write_dat_data_binfo()
654 *blkoff = binfo->bi_dat.bi_blkoff; in nilfs_write_dat_data_binfo()
657 static void nilfs_write_dat_node_binfo(struct nilfs_sc_info *sci, in nilfs_write_dat_node_binfo() argument
662 nilfs_segctor_map_segsum_entry(sci, ssp, sizeof(*binfo_dat)); in nilfs_write_dat_node_binfo()
663 *binfo_dat = binfo->bi_dat; in nilfs_write_dat_node_binfo()
687 struct address_space *mapping = inode->i_mapping; in nilfs_lookup_dirty_data_buffers()
695 * A valid range is given for sync-ing data pages. The in nilfs_lookup_dirty_data_buffers()
696 * range is rounded to per-page; extra dirty buffers in nilfs_lookup_dirty_data_buffers()
723 list_add_tail(&bh->b_assoc_buffers, listp); in nilfs_lookup_dirty_data_buffers()
730 } while (bh = bh->b_this_page, bh != head); in nilfs_lookup_dirty_data_buffers()
741 struct inode *btnc_inode = ii->i_assoc_inode; in nilfs_lookup_dirty_node_buffers()
752 while (pagevec_lookup_tag(&pvec, btnc_inode->i_mapping, &index, in nilfs_lookup_dirty_node_buffers()
760 list_add_tail(&bh->b_assoc_buffers, in nilfs_lookup_dirty_node_buffers()
763 bh = bh->b_this_page; in nilfs_lookup_dirty_node_buffers()
779 spin_lock(&nilfs->ns_inode_lock); in nilfs_dispose_list()
781 list_del_init(&ii->i_dirty); in nilfs_dispose_list()
783 if (unlikely(ii->i_bh)) { in nilfs_dispose_list()
784 brelse(ii->i_bh); in nilfs_dispose_list()
785 ii->i_bh = NULL; in nilfs_dispose_list()
787 } else if (test_bit(NILFS_I_DIRTY, &ii->i_state)) { in nilfs_dispose_list()
788 set_bit(NILFS_I_QUEUED, &ii->i_state); in nilfs_dispose_list()
789 list_add_tail(&ii->i_dirty, in nilfs_dispose_list()
790 &nilfs->ns_dirty_files); in nilfs_dispose_list()
797 spin_unlock(&nilfs->ns_inode_lock); in nilfs_dispose_list()
799 for (pii = ivec; nv > 0; pii++, nv--) in nilfs_dispose_list()
800 iput(&(*pii)->vfs_inode); in nilfs_dispose_list()
806 struct nilfs_sc_info *sci = container_of(work, struct nilfs_sc_info, in nilfs_iput_work_func() local
808 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_iput_work_func()
810 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 0); in nilfs_iput_work_func()
818 if (nilfs_mdt_fetch_dirty(root->ifile)) in nilfs_test_metadata_dirty()
820 if (nilfs_mdt_fetch_dirty(nilfs->ns_cpfile)) in nilfs_test_metadata_dirty()
822 if (nilfs_mdt_fetch_dirty(nilfs->ns_sufile)) in nilfs_test_metadata_dirty()
824 if ((ret || nilfs_doing_gc()) && nilfs_mdt_fetch_dirty(nilfs->ns_dat)) in nilfs_test_metadata_dirty()
829 static int nilfs_segctor_clean(struct nilfs_sc_info *sci) in nilfs_segctor_clean() argument
831 return list_empty(&sci->sc_dirty_files) && in nilfs_segctor_clean()
832 !test_bit(NILFS_SC_DIRTY, &sci->sc_flags) && in nilfs_segctor_clean()
833 sci->sc_nfreesegs == 0 && in nilfs_segctor_clean()
834 (!nilfs_doing_gc() || list_empty(&sci->sc_gc_inodes)); in nilfs_segctor_clean()
837 static int nilfs_segctor_confirm(struct nilfs_sc_info *sci) in nilfs_segctor_confirm() argument
839 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_confirm()
842 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) in nilfs_segctor_confirm()
843 set_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_confirm()
845 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_confirm()
846 if (list_empty(&nilfs->ns_dirty_files) && nilfs_segctor_clean(sci)) in nilfs_segctor_confirm()
849 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_confirm()
853 static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci) in nilfs_segctor_clear_metadata_dirty() argument
855 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_clear_metadata_dirty()
857 nilfs_mdt_clear_dirty(sci->sc_root->ifile); in nilfs_segctor_clear_metadata_dirty()
858 nilfs_mdt_clear_dirty(nilfs->ns_cpfile); in nilfs_segctor_clear_metadata_dirty()
859 nilfs_mdt_clear_dirty(nilfs->ns_sufile); in nilfs_segctor_clear_metadata_dirty()
860 nilfs_mdt_clear_dirty(nilfs->ns_dat); in nilfs_segctor_clear_metadata_dirty()
863 static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci) in nilfs_segctor_create_checkpoint() argument
865 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_create_checkpoint()
871 err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, 1, in nilfs_segctor_create_checkpoint()
880 nilfs_mdt_mark_dirty(nilfs->ns_cpfile); in nilfs_segctor_create_checkpoint()
882 nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); in nilfs_segctor_create_checkpoint()
883 } else if (err == -EINVAL || err == -ENOENT) { in nilfs_segctor_create_checkpoint()
884 nilfs_error(sci->sc_super, in nilfs_segctor_create_checkpoint()
886 err = -EIO; in nilfs_segctor_create_checkpoint()
891 static int nilfs_segctor_fill_in_checkpoint(struct nilfs_sc_info *sci) in nilfs_segctor_fill_in_checkpoint() argument
893 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_fill_in_checkpoint()
898 err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, 0, in nilfs_segctor_fill_in_checkpoint()
901 if (err == -EINVAL || err == -ENOENT) { in nilfs_segctor_fill_in_checkpoint()
902 nilfs_error(sci->sc_super, in nilfs_segctor_fill_in_checkpoint()
904 err = -EIO; in nilfs_segctor_fill_in_checkpoint()
908 raw_cp->cp_snapshot_list.ssl_next = 0; in nilfs_segctor_fill_in_checkpoint()
909 raw_cp->cp_snapshot_list.ssl_prev = 0; in nilfs_segctor_fill_in_checkpoint()
910 raw_cp->cp_inodes_count = in nilfs_segctor_fill_in_checkpoint()
911 cpu_to_le64(atomic64_read(&sci->sc_root->inodes_count)); in nilfs_segctor_fill_in_checkpoint()
912 raw_cp->cp_blocks_count = in nilfs_segctor_fill_in_checkpoint()
913 cpu_to_le64(atomic64_read(&sci->sc_root->blocks_count)); in nilfs_segctor_fill_in_checkpoint()
914 raw_cp->cp_nblk_inc = in nilfs_segctor_fill_in_checkpoint()
915 cpu_to_le64(sci->sc_nblk_inc + sci->sc_nblk_this_inc); in nilfs_segctor_fill_in_checkpoint()
916 raw_cp->cp_create = cpu_to_le64(sci->sc_seg_ctime); in nilfs_segctor_fill_in_checkpoint()
917 raw_cp->cp_cno = cpu_to_le64(nilfs->ns_cno); in nilfs_segctor_fill_in_checkpoint()
919 if (test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags)) in nilfs_segctor_fill_in_checkpoint()
924 nilfs_write_inode_common(sci->sc_root->ifile, in nilfs_segctor_fill_in_checkpoint()
925 &raw_cp->cp_ifile_inode, 1); in nilfs_segctor_fill_in_checkpoint()
926 nilfs_cpfile_put_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); in nilfs_segctor_fill_in_checkpoint()
940 if (test_bit(NILFS_I_BMAP, &ii->i_state)) { in nilfs_fill_in_file_bmap()
941 ibh = ii->i_bh; in nilfs_fill_in_file_bmap()
943 raw_inode = nilfs_ifile_map_inode(ifile, ii->vfs_inode.i_ino, in nilfs_fill_in_file_bmap()
945 nilfs_bmap_write(ii->i_bmap, raw_inode); in nilfs_fill_in_file_bmap()
946 nilfs_ifile_unmap_inode(ifile, ii->vfs_inode.i_ino, ibh); in nilfs_fill_in_file_bmap()
950 static void nilfs_segctor_fill_in_file_bmap(struct nilfs_sc_info *sci) in nilfs_segctor_fill_in_file_bmap() argument
954 list_for_each_entry(ii, &sci->sc_dirty_files, i_dirty) { in nilfs_segctor_fill_in_file_bmap()
955 nilfs_fill_in_file_bmap(sci->sc_root->ifile, ii); in nilfs_segctor_fill_in_file_bmap()
956 set_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_segctor_fill_in_file_bmap()
960 static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci, in nilfs_segctor_fill_in_super_root() argument
967 bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root; in nilfs_segctor_fill_in_super_root()
968 raw_sr = (struct nilfs_super_root *)bh_sr->b_data; in nilfs_segctor_fill_in_super_root()
969 isz = nilfs->ns_inode_size; in nilfs_segctor_fill_in_super_root()
972 raw_sr->sr_bytes = cpu_to_le16(srsz); in nilfs_segctor_fill_in_super_root()
973 raw_sr->sr_nongc_ctime in nilfs_segctor_fill_in_super_root()
975 nilfs->ns_nongc_ctime : sci->sc_seg_ctime); in nilfs_segctor_fill_in_super_root()
976 raw_sr->sr_flags = 0; in nilfs_segctor_fill_in_super_root()
978 nilfs_write_inode_common(nilfs->ns_dat, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
980 nilfs_write_inode_common(nilfs->ns_cpfile, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
982 nilfs_write_inode_common(nilfs->ns_sufile, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
984 memset((void *)raw_sr + srsz, 0, nilfs->ns_blocksize - srsz); in nilfs_segctor_fill_in_super_root()
992 if (test_bit(NILFS_I_COLLECTED, &ii->i_state)) in nilfs_redirty_inodes()
993 clear_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_redirty_inodes()
1002 if (!test_and_clear_bit(NILFS_I_COLLECTED, &ii->i_state)) in nilfs_drop_collected_inodes()
1005 clear_bit(NILFS_I_INODE_SYNC, &ii->i_state); in nilfs_drop_collected_inodes()
1006 set_bit(NILFS_I_UPDATED, &ii->i_state); in nilfs_drop_collected_inodes()
1010 static int nilfs_segctor_apply_buffers(struct nilfs_sc_info *sci, in nilfs_segctor_apply_buffers() argument
1022 list_del_init(&bh->b_assoc_buffers); in nilfs_segctor_apply_buffers()
1023 err = collect(sci, bh, inode); in nilfs_segctor_apply_buffers()
1035 list_del_init(&bh->b_assoc_buffers); in nilfs_segctor_apply_buffers()
1041 static size_t nilfs_segctor_buffer_rest(struct nilfs_sc_info *sci) in nilfs_segctor_buffer_rest() argument
1044 return sci->sc_segbuf_nblocks - in nilfs_segctor_buffer_rest()
1045 (sci->sc_nblk_this_inc + sci->sc_curseg->sb_sum.nblocks); in nilfs_segctor_buffer_rest()
1048 static int nilfs_segctor_scan_file(struct nilfs_sc_info *sci, in nilfs_segctor_scan_file() argument
1056 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) { in nilfs_segctor_scan_file()
1057 size_t n, rest = nilfs_segctor_buffer_rest(sci); in nilfs_segctor_scan_file()
1063 sci, inode, &data_buffers, in nilfs_segctor_scan_file()
1064 sc_ops->collect_data); in nilfs_segctor_scan_file()
1065 BUG_ON(!err); /* always receive -E2BIG or true error */ in nilfs_segctor_scan_file()
1071 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) { in nilfs_segctor_scan_file()
1073 sci, inode, &data_buffers, sc_ops->collect_data); in nilfs_segctor_scan_file()
1077 sci, inode, &node_buffers, NULL); in nilfs_segctor_scan_file()
1080 sci->sc_stage.flags |= NILFS_CF_NODE; in nilfs_segctor_scan_file()
1084 sci, inode, &node_buffers, sc_ops->collect_node); in nilfs_segctor_scan_file()
1088 nilfs_bmap_lookup_dirty_buffers(NILFS_I(inode)->i_bmap, &node_buffers); in nilfs_segctor_scan_file()
1090 sci, inode, &node_buffers, sc_ops->collect_bmap); in nilfs_segctor_scan_file()
1094 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_scan_file()
1095 sci->sc_stage.flags &= ~NILFS_CF_NODE; in nilfs_segctor_scan_file()
1101 static int nilfs_segctor_scan_file_dsync(struct nilfs_sc_info *sci, in nilfs_segctor_scan_file_dsync() argument
1105 size_t n, rest = nilfs_segctor_buffer_rest(sci); in nilfs_segctor_scan_file_dsync()
1109 sci->sc_dsync_start, in nilfs_segctor_scan_file_dsync()
1110 sci->sc_dsync_end); in nilfs_segctor_scan_file_dsync()
1112 err = nilfs_segctor_apply_buffers(sci, inode, &data_buffers, in nilfs_segctor_scan_file_dsync()
1115 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_scan_file_dsync()
1117 /* always receive -E2BIG or true error if n > rest */ in nilfs_segctor_scan_file_dsync()
1122 static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_collect_blocks() argument
1124 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_collect_blocks()
1130 switch (nilfs_sc_cstage_get(sci)) { in nilfs_segctor_collect_blocks()
1132 /* Pre-processes */ in nilfs_segctor_collect_blocks()
1133 sci->sc_stage.flags = 0; in nilfs_segctor_collect_blocks()
1135 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) { in nilfs_segctor_collect_blocks()
1136 sci->sc_nblk_inc = 0; in nilfs_segctor_collect_blocks()
1137 sci->sc_curseg->sb_sum.flags = NILFS_SS_LOGBGN; in nilfs_segctor_collect_blocks()
1139 nilfs_sc_cstage_set(sci, NILFS_ST_DSYNC); in nilfs_segctor_collect_blocks()
1144 sci->sc_stage.dirty_file_ptr = NULL; in nilfs_segctor_collect_blocks()
1145 sci->sc_stage.gc_inode_ptr = NULL; in nilfs_segctor_collect_blocks()
1147 nilfs_sc_cstage_set(sci, NILFS_ST_DAT); in nilfs_segctor_collect_blocks()
1150 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1154 head = &sci->sc_gc_inodes; in nilfs_segctor_collect_blocks()
1155 ii = list_prepare_entry(sci->sc_stage.gc_inode_ptr, in nilfs_segctor_collect_blocks()
1159 sci, &ii->vfs_inode, in nilfs_segctor_collect_blocks()
1162 sci->sc_stage.gc_inode_ptr = list_entry( in nilfs_segctor_collect_blocks()
1163 ii->i_dirty.prev, in nilfs_segctor_collect_blocks()
1168 set_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_segctor_collect_blocks()
1170 sci->sc_stage.gc_inode_ptr = NULL; in nilfs_segctor_collect_blocks()
1172 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1175 head = &sci->sc_dirty_files; in nilfs_segctor_collect_blocks()
1176 ii = list_prepare_entry(sci->sc_stage.dirty_file_ptr, head, in nilfs_segctor_collect_blocks()
1179 clear_bit(NILFS_I_DIRTY, &ii->i_state); in nilfs_segctor_collect_blocks()
1181 err = nilfs_segctor_scan_file(sci, &ii->vfs_inode, in nilfs_segctor_collect_blocks()
1184 sci->sc_stage.dirty_file_ptr = in nilfs_segctor_collect_blocks()
1185 list_entry(ii->i_dirty.prev, in nilfs_segctor_collect_blocks()
1190 /* sci->sc_stage.dirty_file_ptr = NILFS_I(inode); */ in nilfs_segctor_collect_blocks()
1193 sci->sc_stage.dirty_file_ptr = NULL; in nilfs_segctor_collect_blocks()
1195 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1198 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1199 sci->sc_stage.flags |= NILFS_CF_IFILE_STARTED; in nilfs_segctor_collect_blocks()
1202 err = nilfs_segctor_scan_file(sci, sci->sc_root->ifile, in nilfs_segctor_collect_blocks()
1206 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1208 err = nilfs_segctor_create_checkpoint(sci); in nilfs_segctor_collect_blocks()
1213 err = nilfs_segctor_scan_file(sci, nilfs->ns_cpfile, in nilfs_segctor_collect_blocks()
1217 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1220 err = nilfs_sufile_freev(nilfs->ns_sufile, sci->sc_freesegs, in nilfs_segctor_collect_blocks()
1221 sci->sc_nfreesegs, &ndone); in nilfs_segctor_collect_blocks()
1223 nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_collect_blocks()
1224 sci->sc_freesegs, ndone, in nilfs_segctor_collect_blocks()
1228 sci->sc_stage.flags |= NILFS_CF_SUFREED; in nilfs_segctor_collect_blocks()
1230 err = nilfs_segctor_scan_file(sci, nilfs->ns_sufile, in nilfs_segctor_collect_blocks()
1234 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1238 err = nilfs_segctor_scan_file(sci, nilfs->ns_dat, in nilfs_segctor_collect_blocks()
1243 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1246 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1251 err = nilfs_segctor_add_super_root(sci); in nilfs_segctor_collect_blocks()
1256 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND; in nilfs_segctor_collect_blocks()
1257 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1261 sci->sc_curseg->sb_sum.flags |= NILFS_SS_SYNDT; in nilfs_segctor_collect_blocks()
1262 ii = sci->sc_dsync_inode; in nilfs_segctor_collect_blocks()
1263 if (!test_bit(NILFS_I_BUSY, &ii->i_state)) in nilfs_segctor_collect_blocks()
1266 err = nilfs_segctor_scan_file_dsync(sci, &ii->vfs_inode); in nilfs_segctor_collect_blocks()
1269 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND; in nilfs_segctor_collect_blocks()
1270 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1283 * nilfs_segctor_begin_construction - setup segment buffer to make a new log
1284 * @sci: nilfs_sc_info
1287 static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci, in nilfs_segctor_begin_construction() argument
1294 segbuf = nilfs_segbuf_new(sci->sc_super); in nilfs_segctor_begin_construction()
1296 return -ENOMEM; in nilfs_segctor_begin_construction()
1298 if (list_empty(&sci->sc_write_logs)) { in nilfs_segctor_begin_construction()
1299 nilfs_segbuf_map(segbuf, nilfs->ns_segnum, in nilfs_segctor_begin_construction()
1300 nilfs->ns_pseg_offset, nilfs); in nilfs_segctor_begin_construction()
1301 if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { in nilfs_segctor_begin_construction()
1303 nilfs_segbuf_map(segbuf, nilfs->ns_segnum, 0, nilfs); in nilfs_segctor_begin_construction()
1306 segbuf->sb_sum.seg_seq = nilfs->ns_seg_seq; in nilfs_segctor_begin_construction()
1307 nextnum = nilfs->ns_nextnum; in nilfs_segctor_begin_construction()
1309 if (nilfs->ns_segnum == nilfs->ns_nextnum) in nilfs_segctor_begin_construction()
1314 prev = NILFS_LAST_SEGBUF(&sci->sc_write_logs); in nilfs_segctor_begin_construction()
1316 segbuf->sb_sum.seg_seq = prev->sb_sum.seg_seq; in nilfs_segctor_begin_construction()
1317 nextnum = prev->sb_nextnum; in nilfs_segctor_begin_construction()
1319 if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { in nilfs_segctor_begin_construction()
1320 nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); in nilfs_segctor_begin_construction()
1321 segbuf->sb_sum.seg_seq++; in nilfs_segctor_begin_construction()
1326 err = nilfs_sufile_mark_dirty(nilfs->ns_sufile, segbuf->sb_segnum); in nilfs_segctor_begin_construction()
1331 err = nilfs_sufile_alloc(nilfs->ns_sufile, &nextnum); in nilfs_segctor_begin_construction()
1337 BUG_ON(!list_empty(&sci->sc_segbufs)); in nilfs_segctor_begin_construction()
1338 list_add_tail(&segbuf->sb_list, &sci->sc_segbufs); in nilfs_segctor_begin_construction()
1339 sci->sc_segbuf_nblocks = segbuf->sb_rest_blocks; in nilfs_segctor_begin_construction()
1347 static int nilfs_segctor_extend_segments(struct nilfs_sc_info *sci, in nilfs_segctor_extend_segments() argument
1351 struct inode *sufile = nilfs->ns_sufile; in nilfs_segctor_extend_segments()
1356 prev = NILFS_LAST_SEGBUF(&sci->sc_segbufs); in nilfs_segctor_extend_segments()
1363 err = nilfs_sufile_mark_dirty(sufile, prev->sb_nextnum); in nilfs_segctor_extend_segments()
1369 err = -ENOMEM; in nilfs_segctor_extend_segments()
1370 segbuf = nilfs_segbuf_new(sci->sc_super); in nilfs_segctor_extend_segments()
1374 /* map this buffer to region of segment on-disk */ in nilfs_segctor_extend_segments()
1375 nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); in nilfs_segctor_extend_segments()
1376 sci->sc_segbuf_nblocks += segbuf->sb_rest_blocks; in nilfs_segctor_extend_segments()
1383 segbuf->sb_sum.seg_seq = prev->sb_sum.seg_seq + 1; in nilfs_segctor_extend_segments()
1386 list_add_tail(&segbuf->sb_list, &list); in nilfs_segctor_extend_segments()
1389 list_splice_tail(&list, &sci->sc_segbufs); in nilfs_segctor_extend_segments()
1396 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_segctor_extend_segments()
1407 struct inode *sufile = nilfs->ns_sufile; in nilfs_free_incomplete_logs()
1411 if (nilfs->ns_nextnum != segbuf->sb_nextnum) { in nilfs_free_incomplete_logs()
1412 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_free_incomplete_logs()
1415 if (atomic_read(&segbuf->sb_err)) { in nilfs_free_incomplete_logs()
1417 if (segbuf->sb_pseg_start != segbuf->sb_fseg_start) in nilfs_free_incomplete_logs()
1422 nilfs_terminate_segment(nilfs, segbuf->sb_fseg_start, in nilfs_free_incomplete_logs()
1423 segbuf->sb_fseg_end); in nilfs_free_incomplete_logs()
1430 if (prev->sb_nextnum != segbuf->sb_nextnum) { in nilfs_free_incomplete_logs()
1431 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_free_incomplete_logs()
1434 if (atomic_read(&segbuf->sb_err) && in nilfs_free_incomplete_logs()
1435 segbuf->sb_segnum != nilfs->ns_nextnum) in nilfs_free_incomplete_logs()
1437 nilfs_sufile_set_error(sufile, segbuf->sb_segnum); in nilfs_free_incomplete_logs()
1442 static void nilfs_segctor_update_segusage(struct nilfs_sc_info *sci, in nilfs_segctor_update_segusage() argument
1449 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_update_segusage()
1450 live_blocks = segbuf->sb_sum.nblocks + in nilfs_segctor_update_segusage()
1451 (segbuf->sb_pseg_start - segbuf->sb_fseg_start); in nilfs_segctor_update_segusage()
1452 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_segctor_update_segusage()
1454 sci->sc_seg_ctime); in nilfs_segctor_update_segusage()
1465 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_cancel_segusage()
1466 segbuf->sb_pseg_start - in nilfs_cancel_segusage()
1467 segbuf->sb_fseg_start, 0); in nilfs_cancel_segusage()
1471 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_cancel_segusage()
1477 static void nilfs_segctor_truncate_segments(struct nilfs_sc_info *sci, in nilfs_segctor_truncate_segments() argument
1484 list_for_each_entry_continue(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_truncate_segments()
1485 sci->sc_segbuf_nblocks -= segbuf->sb_rest_blocks; in nilfs_segctor_truncate_segments()
1486 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_segctor_truncate_segments()
1489 nilfs_truncate_logs(&sci->sc_segbufs, last); in nilfs_segctor_truncate_segments()
1493 static int nilfs_segctor_collect(struct nilfs_sc_info *sci, in nilfs_segctor_collect() argument
1496 struct nilfs_cstage prev_stage = sci->sc_stage; in nilfs_segctor_collect()
1501 sci->sc_nblk_this_inc = 0; in nilfs_segctor_collect()
1502 sci->sc_curseg = NILFS_FIRST_SEGBUF(&sci->sc_segbufs); in nilfs_segctor_collect()
1504 err = nilfs_segctor_reset_segment_buffer(sci); in nilfs_segctor_collect()
1508 err = nilfs_segctor_collect_blocks(sci, mode); in nilfs_segctor_collect()
1509 sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks; in nilfs_segctor_collect()
1513 if (unlikely(err != -E2BIG)) in nilfs_segctor_collect()
1518 nilfs_sc_cstage_get(sci) < NILFS_ST_CPFILE) in nilfs_segctor_collect()
1521 nilfs_clear_logs(&sci->sc_segbufs); in nilfs_segctor_collect()
1523 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { in nilfs_segctor_collect()
1524 err = nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_collect()
1525 sci->sc_freesegs, in nilfs_segctor_collect()
1526 sci->sc_nfreesegs, in nilfs_segctor_collect()
1529 sci->sc_stage.flags &= ~NILFS_CF_SUFREED; in nilfs_segctor_collect()
1532 err = nilfs_segctor_extend_segments(sci, nilfs, nadd); in nilfs_segctor_collect()
1537 sci->sc_stage = prev_stage; in nilfs_segctor_collect()
1539 nilfs_segctor_truncate_segments(sci, sci->sc_curseg, nilfs->ns_sufile); in nilfs_segctor_collect()
1549 BUG_ON(!list_empty(&new_bh->b_assoc_buffers)); in nilfs_list_replace_buffer()
1551 list_replace_init(&old_bh->b_assoc_buffers, &new_bh->b_assoc_buffers); in nilfs_list_replace_buffer()
1556 nilfs_segctor_update_payload_blocknr(struct nilfs_sc_info *sci, in nilfs_segctor_update_payload_blocknr() argument
1562 unsigned long nfinfo = segbuf->sb_sum.nfinfo; in nilfs_segctor_update_payload_blocknr()
1575 blocknr = segbuf->sb_pseg_start + segbuf->sb_sum.nsumblk; in nilfs_segctor_update_payload_blocknr()
1576 ssp.bh = NILFS_SEGBUF_FIRST_BH(&segbuf->sb_segsum_buffers); in nilfs_segctor_update_payload_blocknr()
1579 list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) { in nilfs_segctor_update_payload_blocknr()
1580 if (bh == segbuf->sb_super_root) in nilfs_segctor_update_payload_blocknr()
1584 sci, &ssp, sizeof(*finfo)); in nilfs_segctor_update_payload_blocknr()
1585 ino = le64_to_cpu(finfo->fi_ino); in nilfs_segctor_update_payload_blocknr()
1586 nblocks = le32_to_cpu(finfo->fi_nblocks); in nilfs_segctor_update_payload_blocknr()
1587 ndatablk = le32_to_cpu(finfo->fi_ndatablk); in nilfs_segctor_update_payload_blocknr()
1589 inode = bh->b_page->mapping->host; in nilfs_segctor_update_payload_blocknr()
1600 err = nilfs_bmap_assign(NILFS_I(inode)->i_bmap, &bh, blocknr, in nilfs_segctor_update_payload_blocknr()
1609 sc_op->write_data_binfo(sci, &ssp, &binfo); in nilfs_segctor_update_payload_blocknr()
1611 sc_op->write_node_binfo(sci, &ssp, &binfo); in nilfs_segctor_update_payload_blocknr()
1614 if (--nblocks == 0) { in nilfs_segctor_update_payload_blocknr()
1616 if (--nfinfo == 0) in nilfs_segctor_update_payload_blocknr()
1619 ndatablk--; in nilfs_segctor_update_payload_blocknr()
1628 static int nilfs_segctor_assign(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_assign() argument
1633 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_assign()
1634 err = nilfs_segctor_update_payload_blocknr(sci, segbuf, mode); in nilfs_segctor_assign()
1646 * For split b-tree node pages, this function may be called in nilfs_begin_page_io()
1657 static void nilfs_segctor_prepare_write(struct nilfs_sc_info *sci) in nilfs_segctor_prepare_write() argument
1662 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_prepare_write()
1665 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_segctor_prepare_write()
1667 if (bh->b_page != bd_page) { in nilfs_segctor_prepare_write()
1674 bd_page = bh->b_page; in nilfs_segctor_prepare_write()
1678 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_segctor_prepare_write()
1681 if (bh == segbuf->sb_super_root) { in nilfs_segctor_prepare_write()
1682 if (bh->b_page != bd_page) { in nilfs_segctor_prepare_write()
1687 bd_page = bh->b_page; in nilfs_segctor_prepare_write()
1691 if (bh->b_page != fs_page) { in nilfs_segctor_prepare_write()
1693 fs_page = bh->b_page; in nilfs_segctor_prepare_write()
1706 static int nilfs_segctor_write(struct nilfs_sc_info *sci, in nilfs_segctor_write() argument
1711 ret = nilfs_write_logs(&sci->sc_segbufs, nilfs); in nilfs_segctor_write()
1712 list_splice_tail_init(&sci->sc_segbufs, &sci->sc_write_logs); in nilfs_segctor_write()
1723 * For b-tree node pages, this function may be called twice in nilfs_end_page_io()
1728 * For pages holding split b-tree node buffers, dirty in nilfs_end_page_io()
1764 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_abort_logs()
1766 if (bh->b_page != bd_page) { in nilfs_abort_logs()
1769 bd_page = bh->b_page; in nilfs_abort_logs()
1773 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_abort_logs()
1776 if (bh == segbuf->sb_super_root) { in nilfs_abort_logs()
1777 if (bh->b_page != bd_page) { in nilfs_abort_logs()
1779 bd_page = bh->b_page; in nilfs_abort_logs()
1783 if (bh->b_page != fs_page) { in nilfs_abort_logs()
1785 fs_page = bh->b_page; in nilfs_abort_logs()
1795 static void nilfs_segctor_abort_construction(struct nilfs_sc_info *sci, in nilfs_segctor_abort_construction() argument
1801 list_splice_tail_init(&sci->sc_write_logs, &logs); in nilfs_segctor_abort_construction()
1805 list_splice_tail_init(&sci->sc_segbufs, &logs); in nilfs_segctor_abort_construction()
1806 nilfs_cancel_segusage(&logs, nilfs->ns_sufile); in nilfs_segctor_abort_construction()
1809 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { in nilfs_segctor_abort_construction()
1810 ret = nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_abort_construction()
1811 sci->sc_freesegs, in nilfs_segctor_abort_construction()
1812 sci->sc_nfreesegs, in nilfs_segctor_abort_construction()
1823 nilfs->ns_segnum = segbuf->sb_segnum; in nilfs_set_next_segment()
1824 nilfs->ns_nextnum = segbuf->sb_nextnum; in nilfs_set_next_segment()
1825 nilfs->ns_pseg_offset = segbuf->sb_pseg_start - segbuf->sb_fseg_start in nilfs_set_next_segment()
1826 + segbuf->sb_sum.nblocks; in nilfs_set_next_segment()
1827 nilfs->ns_seg_seq = segbuf->sb_sum.seg_seq; in nilfs_set_next_segment()
1828 nilfs->ns_ctime = segbuf->sb_sum.ctime; in nilfs_set_next_segment()
1831 static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) in nilfs_segctor_complete_write() argument
1835 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_complete_write()
1838 list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) { in nilfs_segctor_complete_write()
1841 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_segctor_complete_write()
1845 if (bh->b_page != bd_page) { in nilfs_segctor_complete_write()
1848 bd_page = bh->b_page; in nilfs_segctor_complete_write()
1855 * identifiable by the discontinuity of bh->b_page in nilfs_segctor_complete_write()
1858 * For B-tree node blocks, however, this assumption is not in nilfs_segctor_complete_write()
1859 * guaranteed. The cleanup code of B-tree node pages needs in nilfs_segctor_complete_write()
1862 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_segctor_complete_write()
1870 set_mask_bits(&bh->b_state, clear_bits, set_bits); in nilfs_segctor_complete_write()
1871 if (bh == segbuf->sb_super_root) { in nilfs_segctor_complete_write()
1872 if (bh->b_page != bd_page) { in nilfs_segctor_complete_write()
1874 bd_page = bh->b_page; in nilfs_segctor_complete_write()
1879 if (bh->b_page != fs_page) { in nilfs_segctor_complete_write()
1881 fs_page = bh->b_page; in nilfs_segctor_complete_write()
1886 if (segbuf->sb_sum.flags & NILFS_SS_LOGBGN) { in nilfs_segctor_complete_write()
1887 set_bit(NILFS_SC_UNCLOSED, &sci->sc_flags); in nilfs_segctor_complete_write()
1888 sci->sc_lseg_stime = jiffies; in nilfs_segctor_complete_write()
1890 if (segbuf->sb_sum.flags & NILFS_SS_LOGEND) in nilfs_segctor_complete_write()
1891 clear_bit(NILFS_SC_UNCLOSED, &sci->sc_flags); in nilfs_segctor_complete_write()
1903 nilfs_drop_collected_inodes(&sci->sc_dirty_files); in nilfs_segctor_complete_write()
1906 nilfs_drop_collected_inodes(&sci->sc_gc_inodes); in nilfs_segctor_complete_write()
1908 nilfs->ns_nongc_ctime = sci->sc_seg_ctime; in nilfs_segctor_complete_write()
1910 sci->sc_nblk_inc += sci->sc_nblk_this_inc; in nilfs_segctor_complete_write()
1912 segbuf = NILFS_LAST_SEGBUF(&sci->sc_write_logs); in nilfs_segctor_complete_write()
1916 nilfs->ns_flushed_device = 0; in nilfs_segctor_complete_write()
1917 nilfs_set_last_segment(nilfs, segbuf->sb_pseg_start, in nilfs_segctor_complete_write()
1918 segbuf->sb_sum.seg_seq, nilfs->ns_cno++); in nilfs_segctor_complete_write()
1920 clear_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); in nilfs_segctor_complete_write()
1921 clear_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_complete_write()
1922 set_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); in nilfs_segctor_complete_write()
1923 nilfs_segctor_clear_metadata_dirty(sci); in nilfs_segctor_complete_write()
1925 clear_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); in nilfs_segctor_complete_write()
1928 static int nilfs_segctor_wait(struct nilfs_sc_info *sci) in nilfs_segctor_wait() argument
1932 ret = nilfs_wait_on_logs(&sci->sc_write_logs); in nilfs_segctor_wait()
1934 nilfs_segctor_complete_write(sci); in nilfs_segctor_wait()
1935 nilfs_destroy_logs(&sci->sc_write_logs); in nilfs_segctor_wait()
1940 static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci, in nilfs_segctor_collect_dirty_files() argument
1944 struct inode *ifile = sci->sc_root->ifile; in nilfs_segctor_collect_dirty_files()
1946 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1948 list_for_each_entry_safe(ii, n, &nilfs->ns_dirty_files, i_dirty) { in nilfs_segctor_collect_dirty_files()
1949 if (!ii->i_bh) { in nilfs_segctor_collect_dirty_files()
1953 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1955 ifile, ii->vfs_inode.i_ino, &ibh); in nilfs_segctor_collect_dirty_files()
1957 nilfs_warn(sci->sc_super, in nilfs_segctor_collect_dirty_files()
1959 err, ii->vfs_inode.i_ino); in nilfs_segctor_collect_dirty_files()
1962 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1963 if (likely(!ii->i_bh)) in nilfs_segctor_collect_dirty_files()
1964 ii->i_bh = ibh; in nilfs_segctor_collect_dirty_files()
1971 mark_buffer_dirty(ii->i_bh); in nilfs_segctor_collect_dirty_files()
1974 clear_bit(NILFS_I_QUEUED, &ii->i_state); in nilfs_segctor_collect_dirty_files()
1975 set_bit(NILFS_I_BUSY, &ii->i_state); in nilfs_segctor_collect_dirty_files()
1976 list_move_tail(&ii->i_dirty, &sci->sc_dirty_files); in nilfs_segctor_collect_dirty_files()
1978 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1983 static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci, in nilfs_segctor_drop_written_files() argument
1987 int during_mount = !(sci->sc_super->s_flags & SB_ACTIVE); in nilfs_segctor_drop_written_files()
1990 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
1991 list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) { in nilfs_segctor_drop_written_files()
1992 if (!test_and_clear_bit(NILFS_I_UPDATED, &ii->i_state) || in nilfs_segctor_drop_written_files()
1993 test_bit(NILFS_I_DIRTY, &ii->i_state)) in nilfs_segctor_drop_written_files()
1996 clear_bit(NILFS_I_BUSY, &ii->i_state); in nilfs_segctor_drop_written_files()
1997 brelse(ii->i_bh); in nilfs_segctor_drop_written_files()
1998 ii->i_bh = NULL; in nilfs_segctor_drop_written_files()
1999 list_del_init(&ii->i_dirty); in nilfs_segctor_drop_written_files()
2000 if (!ii->vfs_inode.i_nlink || during_mount) { in nilfs_segctor_drop_written_files()
2005 list_add_tail(&ii->i_dirty, &sci->sc_iput_queue); in nilfs_segctor_drop_written_files()
2008 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2009 iput(&ii->vfs_inode); in nilfs_segctor_drop_written_files()
2010 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2013 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2016 schedule_work(&sci->sc_iput_work); in nilfs_segctor_drop_written_files()
2022 static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_do_construct() argument
2024 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_do_construct()
2027 nilfs_sc_cstage_set(sci, NILFS_ST_INIT); in nilfs_segctor_do_construct()
2028 sci->sc_cno = nilfs->ns_cno; in nilfs_segctor_do_construct()
2030 err = nilfs_segctor_collect_dirty_files(sci, nilfs); in nilfs_segctor_do_construct()
2034 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) in nilfs_segctor_do_construct()
2035 set_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_do_construct()
2037 if (nilfs_segctor_clean(sci)) in nilfs_segctor_do_construct()
2041 sci->sc_stage.flags &= ~NILFS_CF_HISTORY_MASK; in nilfs_segctor_do_construct()
2043 err = nilfs_segctor_begin_construction(sci, nilfs); in nilfs_segctor_do_construct()
2048 sci->sc_seg_ctime = ktime_get_real_seconds(); in nilfs_segctor_do_construct()
2050 err = nilfs_segctor_collect(sci, nilfs, mode); in nilfs_segctor_do_construct()
2055 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE && in nilfs_segctor_do_construct()
2056 nilfs_segbuf_empty(sci->sc_curseg)) { in nilfs_segctor_do_construct()
2057 nilfs_segctor_abort_construction(sci, nilfs, 1); in nilfs_segctor_do_construct()
2061 err = nilfs_segctor_assign(sci, mode); in nilfs_segctor_do_construct()
2065 if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) in nilfs_segctor_do_construct()
2066 nilfs_segctor_fill_in_file_bmap(sci); in nilfs_segctor_do_construct()
2069 nilfs_sc_cstage_get(sci) >= NILFS_ST_CPFILE) { in nilfs_segctor_do_construct()
2070 err = nilfs_segctor_fill_in_checkpoint(sci); in nilfs_segctor_do_construct()
2074 nilfs_segctor_fill_in_super_root(sci, nilfs); in nilfs_segctor_do_construct()
2076 nilfs_segctor_update_segusage(sci, nilfs->ns_sufile); in nilfs_segctor_do_construct()
2079 nilfs_segctor_prepare_write(sci); in nilfs_segctor_do_construct()
2081 nilfs_add_checksums_on_logs(&sci->sc_segbufs, in nilfs_segctor_do_construct()
2082 nilfs->ns_crc_seed); in nilfs_segctor_do_construct()
2084 err = nilfs_segctor_write(sci, nilfs); in nilfs_segctor_do_construct()
2088 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE || in nilfs_segctor_do_construct()
2089 nilfs->ns_blocksize_bits != PAGE_SHIFT) { in nilfs_segctor_do_construct()
2097 err = nilfs_segctor_wait(sci); in nilfs_segctor_do_construct()
2101 } while (nilfs_sc_cstage_get(sci) != NILFS_ST_DONE); in nilfs_segctor_do_construct()
2104 nilfs_segctor_drop_written_files(sci, nilfs); in nilfs_segctor_do_construct()
2108 if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) in nilfs_segctor_do_construct()
2109 nilfs_redirty_inodes(&sci->sc_dirty_files); in nilfs_segctor_do_construct()
2113 nilfs_redirty_inodes(&sci->sc_gc_inodes); in nilfs_segctor_do_construct()
2114 nilfs_segctor_abort_construction(sci, nilfs, err); in nilfs_segctor_do_construct()
2119 * nilfs_segctor_start_timer - set timer of background write
2120 * @sci: nilfs_sc_info
2126 static void nilfs_segctor_start_timer(struct nilfs_sc_info *sci) in nilfs_segctor_start_timer() argument
2128 spin_lock(&sci->sc_state_lock); in nilfs_segctor_start_timer()
2129 if (!(sci->sc_state & NILFS_SEGCTOR_COMMIT)) { in nilfs_segctor_start_timer()
2130 sci->sc_timer.expires = jiffies + sci->sc_interval; in nilfs_segctor_start_timer()
2131 add_timer(&sci->sc_timer); in nilfs_segctor_start_timer()
2132 sci->sc_state |= NILFS_SEGCTOR_COMMIT; in nilfs_segctor_start_timer()
2134 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_start_timer()
2137 static void nilfs_segctor_do_flush(struct nilfs_sc_info *sci, int bn) in nilfs_segctor_do_flush() argument
2139 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_flush()
2140 if (!(sci->sc_flush_request & BIT(bn))) { in nilfs_segctor_do_flush()
2141 unsigned long prev_req = sci->sc_flush_request; in nilfs_segctor_do_flush()
2143 sci->sc_flush_request |= BIT(bn); in nilfs_segctor_do_flush()
2145 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_do_flush()
2147 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_flush()
2151 * nilfs_flush_segment - trigger a segment construction for resource control
2157 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_flush_segment()
2158 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_flush_segment() local
2160 if (!sci || nilfs_doing_construction()) in nilfs_flush_segment()
2162 nilfs_segctor_do_flush(sci, NILFS_MDT_INODE(sb, ino) ? ino : 0); in nilfs_flush_segment()
2173 static int nilfs_segctor_sync(struct nilfs_sc_info *sci) in nilfs_segctor_sync() argument
2178 spin_lock(&sci->sc_state_lock); in nilfs_segctor_sync()
2182 wait_req.seq = ++sci->sc_seq_request; in nilfs_segctor_sync()
2183 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_sync()
2186 add_wait_queue(&sci->sc_wait_request, &wait_req.wq); in nilfs_segctor_sync()
2188 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_sync()
2199 err = -ERESTARTSYS; in nilfs_segctor_sync()
2202 finish_wait(&sci->sc_wait_request, &wait_req.wq); in nilfs_segctor_sync()
2206 static void nilfs_segctor_wakeup(struct nilfs_sc_info *sci, int err) in nilfs_segctor_wakeup() argument
2211 spin_lock_irqsave(&sci->sc_wait_request.lock, flags); in nilfs_segctor_wakeup()
2212 list_for_each_entry_safe(wrq, n, &sci->sc_wait_request.head, wq.entry) { in nilfs_segctor_wakeup()
2213 if (!atomic_read(&wrq->done) && in nilfs_segctor_wakeup()
2214 nilfs_cnt32_ge(sci->sc_seq_done, wrq->seq)) { in nilfs_segctor_wakeup()
2215 wrq->err = err; in nilfs_segctor_wakeup()
2216 atomic_set(&wrq->done, 1); in nilfs_segctor_wakeup()
2218 if (atomic_read(&wrq->done)) { in nilfs_segctor_wakeup()
2219 wrq->wq.func(&wrq->wq, in nilfs_segctor_wakeup()
2224 spin_unlock_irqrestore(&sci->sc_wait_request.lock, flags); in nilfs_segctor_wakeup()
2228 * nilfs_construct_segment - construct a logical segment
2234 * %-EROFS - Read only filesystem.
2236 * %-EIO - I/O error
2238 * %-ENOSPC - No space left on device (only in a panic state).
2240 * %-ERESTARTSYS - Interrupted.
2242 * %-ENOMEM - Insufficient memory available.
2246 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_construct_segment()
2247 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_construct_segment() local
2248 struct nilfs_transaction_info *ti; in nilfs_construct_segment() local
2251 if (sb_rdonly(sb) || unlikely(!sci)) in nilfs_construct_segment()
2252 return -EROFS; in nilfs_construct_segment()
2255 BUG_ON((ti = current->journal_info) && ti->ti_magic == NILFS_TI_MAGIC); in nilfs_construct_segment()
2257 err = nilfs_segctor_sync(sci); in nilfs_construct_segment()
2262 * nilfs_construct_dsync_segment - construct a data-only logical segment
2271 * %-EROFS - Read only filesystem.
2273 * %-EIO - I/O error
2275 * %-ENOSPC - No space left on device (only in a panic state).
2277 * %-ERESTARTSYS - Interrupted.
2279 * %-ENOMEM - Insufficient memory available.
2284 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_construct_dsync_segment()
2285 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_construct_dsync_segment() local
2287 struct nilfs_transaction_info ti; in nilfs_construct_dsync_segment() local
2290 if (sb_rdonly(sb) || unlikely(!sci)) in nilfs_construct_dsync_segment()
2291 return -EROFS; in nilfs_construct_dsync_segment()
2293 nilfs_transaction_lock(sb, &ti, 0); in nilfs_construct_dsync_segment()
2296 if (test_bit(NILFS_I_INODE_SYNC, &ii->i_state) || in nilfs_construct_dsync_segment()
2298 test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || in nilfs_construct_dsync_segment()
2301 err = nilfs_segctor_sync(sci); in nilfs_construct_dsync_segment()
2305 spin_lock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2306 if (!test_bit(NILFS_I_QUEUED, &ii->i_state) && in nilfs_construct_dsync_segment()
2307 !test_bit(NILFS_I_BUSY, &ii->i_state)) { in nilfs_construct_dsync_segment()
2308 spin_unlock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2312 spin_unlock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2313 sci->sc_dsync_inode = ii; in nilfs_construct_dsync_segment()
2314 sci->sc_dsync_start = start; in nilfs_construct_dsync_segment()
2315 sci->sc_dsync_end = end; in nilfs_construct_dsync_segment()
2317 err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC); in nilfs_construct_dsync_segment()
2319 nilfs->ns_flushed_device = 0; in nilfs_construct_dsync_segment()
2329 * nilfs_segctor_accept - record accepted sequence count of log-write requests
2330 * @sci: segment constructor object
2332 static void nilfs_segctor_accept(struct nilfs_sc_info *sci) in nilfs_segctor_accept() argument
2334 spin_lock(&sci->sc_state_lock); in nilfs_segctor_accept()
2335 sci->sc_seq_accepted = sci->sc_seq_request; in nilfs_segctor_accept()
2336 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_accept()
2337 del_timer_sync(&sci->sc_timer); in nilfs_segctor_accept()
2341 * nilfs_segctor_notify - notify the result of request to caller threads
2342 * @sci: segment constructor object
2346 static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err) in nilfs_segctor_notify() argument
2349 spin_lock(&sci->sc_state_lock); in nilfs_segctor_notify()
2352 sci->sc_state &= ~NILFS_SEGCTOR_COMMIT; in nilfs_segctor_notify()
2353 sci->sc_seq_done = sci->sc_seq_accepted; in nilfs_segctor_notify()
2354 nilfs_segctor_wakeup(sci, err); in nilfs_segctor_notify()
2355 sci->sc_flush_request = 0; in nilfs_segctor_notify()
2358 sci->sc_flush_request &= ~FLUSH_FILE_BIT; in nilfs_segctor_notify()
2360 sci->sc_flush_request &= ~FLUSH_DAT_BIT; in nilfs_segctor_notify()
2362 /* re-enable timer if checkpoint creation was not done */ in nilfs_segctor_notify()
2363 if ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && in nilfs_segctor_notify()
2364 time_before(jiffies, sci->sc_timer.expires)) in nilfs_segctor_notify()
2365 add_timer(&sci->sc_timer); in nilfs_segctor_notify()
2367 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_notify()
2371 * nilfs_segctor_construct - form logs and write them to disk
2372 * @sci: segment constructor object
2375 static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_construct() argument
2377 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_construct()
2381 nilfs_segctor_accept(sci); in nilfs_segctor_construct()
2385 if (!nilfs_segctor_confirm(sci)) in nilfs_segctor_construct()
2386 err = nilfs_segctor_do_construct(sci, mode); in nilfs_segctor_construct()
2390 atomic_set(&nilfs->ns_ndirtyblks, 0); in nilfs_segctor_construct()
2391 if (test_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags) && in nilfs_segctor_construct()
2393 down_write(&nilfs->ns_sem); in nilfs_segctor_construct()
2394 err = -EIO; in nilfs_segctor_construct()
2395 sbp = nilfs_prepare_super(sci->sc_super, in nilfs_segctor_construct()
2399 err = nilfs_commit_super(sci->sc_super, in nilfs_segctor_construct()
2402 up_write(&nilfs->ns_sem); in nilfs_segctor_construct()
2406 nilfs_segctor_notify(sci, mode, err); in nilfs_segctor_construct()
2412 struct nilfs_sc_info *sci = from_timer(sci, t, sc_timer); in nilfs_construction_timeout() local
2414 wake_up_process(sci->sc_timer_task); in nilfs_construction_timeout()
2423 if (!test_bit(NILFS_I_UPDATED, &ii->i_state)) in nilfs_remove_written_gcinodes()
2425 list_del_init(&ii->i_dirty); in nilfs_remove_written_gcinodes()
2426 truncate_inode_pages(&ii->vfs_inode.i_data, 0); in nilfs_remove_written_gcinodes()
2427 nilfs_btnode_cache_clear(ii->i_assoc_inode->i_mapping); in nilfs_remove_written_gcinodes()
2428 iput(&ii->vfs_inode); in nilfs_remove_written_gcinodes()
2435 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_clean_segments()
2436 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_clean_segments() local
2437 struct nilfs_transaction_info ti; in nilfs_clean_segments() local
2440 if (unlikely(!sci)) in nilfs_clean_segments()
2441 return -EROFS; in nilfs_clean_segments()
2443 nilfs_transaction_lock(sb, &ti, 1); in nilfs_clean_segments()
2445 err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2451 nilfs_mdt_restore_from_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2455 sci->sc_freesegs = kbufs[4]; in nilfs_clean_segments()
2456 sci->sc_nfreesegs = argv[4].v_nmembs; in nilfs_clean_segments()
2457 list_splice_tail_init(&nilfs->ns_gc_inodes, &sci->sc_gc_inodes); in nilfs_clean_segments()
2460 err = nilfs_segctor_construct(sci, SC_LSEG_SR); in nilfs_clean_segments()
2461 nilfs_remove_written_gcinodes(nilfs, &sci->sc_gc_inodes); in nilfs_clean_segments()
2468 schedule_timeout(sci->sc_interval); in nilfs_clean_segments()
2471 int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs, in nilfs_clean_segments()
2472 sci->sc_nfreesegs); in nilfs_clean_segments()
2482 sci->sc_freesegs = NULL; in nilfs_clean_segments()
2483 sci->sc_nfreesegs = 0; in nilfs_clean_segments()
2484 nilfs_mdt_clear_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2489 static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_thread_construct() argument
2491 struct nilfs_transaction_info ti; in nilfs_segctor_thread_construct() local
2493 nilfs_transaction_lock(sci->sc_super, &ti, 0); in nilfs_segctor_thread_construct()
2494 nilfs_segctor_construct(sci, mode); in nilfs_segctor_thread_construct()
2501 if (test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) in nilfs_segctor_thread_construct()
2502 nilfs_segctor_start_timer(sci); in nilfs_segctor_thread_construct()
2504 nilfs_transaction_unlock(sci->sc_super); in nilfs_segctor_thread_construct()
2507 static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci) in nilfs_segctor_do_immediate_flush() argument
2511 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2512 mode = (sci->sc_flush_request & FLUSH_DAT_BIT) ? in nilfs_segctor_do_immediate_flush()
2514 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2517 nilfs_segctor_do_construct(sci, mode); in nilfs_segctor_do_immediate_flush()
2519 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2520 sci->sc_flush_request &= (mode == SC_FLUSH_FILE) ? in nilfs_segctor_do_immediate_flush()
2522 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2524 clear_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags); in nilfs_segctor_do_immediate_flush()
2527 static int nilfs_segctor_flush_mode(struct nilfs_sc_info *sci) in nilfs_segctor_flush_mode() argument
2529 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || in nilfs_segctor_flush_mode()
2530 time_before(jiffies, sci->sc_lseg_stime + sci->sc_mjcp_freq)) { in nilfs_segctor_flush_mode()
2531 if (!(sci->sc_flush_request & ~FLUSH_FILE_BIT)) in nilfs_segctor_flush_mode()
2533 else if (!(sci->sc_flush_request & ~FLUSH_DAT_BIT)) in nilfs_segctor_flush_mode()
2540 * nilfs_segctor_thread - main loop of the segment constructor thread.
2548 struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg; in nilfs_segctor_thread() local
2549 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_thread()
2552 sci->sc_timer_task = current; in nilfs_segctor_thread()
2555 sci->sc_task = current; in nilfs_segctor_thread()
2556 wake_up(&sci->sc_wait_task); /* for nilfs_segctor_start_thread() */ in nilfs_segctor_thread()
2557 nilfs_info(sci->sc_super, in nilfs_segctor_thread()
2559 sci->sc_interval / HZ, sci->sc_mjcp_freq / HZ); in nilfs_segctor_thread()
2561 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2566 if (sci->sc_state & NILFS_SEGCTOR_QUIT) in nilfs_segctor_thread()
2569 if (timeout || sci->sc_seq_request != sci->sc_seq_done) in nilfs_segctor_thread()
2571 else if (sci->sc_flush_request) in nilfs_segctor_thread()
2572 mode = nilfs_segctor_flush_mode(sci); in nilfs_segctor_thread()
2576 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2577 nilfs_segctor_thread_construct(sci, mode); in nilfs_segctor_thread()
2578 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2584 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2586 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2591 prepare_to_wait(&sci->sc_wait_daemon, &wait, in nilfs_segctor_thread()
2594 if (sci->sc_seq_request != sci->sc_seq_done) in nilfs_segctor_thread()
2596 else if (sci->sc_flush_request) in nilfs_segctor_thread()
2598 else if (sci->sc_state & NILFS_SEGCTOR_COMMIT) in nilfs_segctor_thread()
2600 sci->sc_timer.expires); in nilfs_segctor_thread()
2603 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2605 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2607 finish_wait(&sci->sc_wait_daemon, &wait); in nilfs_segctor_thread()
2608 timeout = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && in nilfs_segctor_thread()
2609 time_after_eq(jiffies, sci->sc_timer.expires)); in nilfs_segctor_thread()
2617 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2620 sci->sc_task = NULL; in nilfs_segctor_thread()
2621 wake_up(&sci->sc_wait_task); /* for nilfs_segctor_kill_thread() */ in nilfs_segctor_thread()
2625 static int nilfs_segctor_start_thread(struct nilfs_sc_info *sci) in nilfs_segctor_start_thread() argument
2629 t = kthread_run(nilfs_segctor_thread, sci, "segctord"); in nilfs_segctor_start_thread()
2633 nilfs_err(sci->sc_super, "error %d creating segctord thread", in nilfs_segctor_start_thread()
2637 wait_event(sci->sc_wait_task, sci->sc_task != NULL); in nilfs_segctor_start_thread()
2641 static void nilfs_segctor_kill_thread(struct nilfs_sc_info *sci) in nilfs_segctor_kill_thread() argument
2642 __acquires(&sci->sc_state_lock) in nilfs_segctor_kill_thread()
2643 __releases(&sci->sc_state_lock) in nilfs_segctor_kill_thread()
2645 sci->sc_state |= NILFS_SEGCTOR_QUIT; in nilfs_segctor_kill_thread()
2647 while (sci->sc_task) { in nilfs_segctor_kill_thread()
2648 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_kill_thread()
2649 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_kill_thread()
2650 wait_event(sci->sc_wait_task, sci->sc_task == NULL); in nilfs_segctor_kill_thread()
2651 spin_lock(&sci->sc_state_lock); in nilfs_segctor_kill_thread()
2656 * Setup & clean-up functions
2661 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_segctor_new()
2662 struct nilfs_sc_info *sci; in nilfs_segctor_new() local
2664 sci = kzalloc(sizeof(*sci), GFP_KERNEL); in nilfs_segctor_new()
2665 if (!sci) in nilfs_segctor_new()
2668 sci->sc_super = sb; in nilfs_segctor_new()
2671 sci->sc_root = root; in nilfs_segctor_new()
2673 init_waitqueue_head(&sci->sc_wait_request); in nilfs_segctor_new()
2674 init_waitqueue_head(&sci->sc_wait_daemon); in nilfs_segctor_new()
2675 init_waitqueue_head(&sci->sc_wait_task); in nilfs_segctor_new()
2676 spin_lock_init(&sci->sc_state_lock); in nilfs_segctor_new()
2677 INIT_LIST_HEAD(&sci->sc_dirty_files); in nilfs_segctor_new()
2678 INIT_LIST_HEAD(&sci->sc_segbufs); in nilfs_segctor_new()
2679 INIT_LIST_HEAD(&sci->sc_write_logs); in nilfs_segctor_new()
2680 INIT_LIST_HEAD(&sci->sc_gc_inodes); in nilfs_segctor_new()
2681 INIT_LIST_HEAD(&sci->sc_iput_queue); in nilfs_segctor_new()
2682 INIT_WORK(&sci->sc_iput_work, nilfs_iput_work_func); in nilfs_segctor_new()
2683 timer_setup(&sci->sc_timer, nilfs_construction_timeout, 0); in nilfs_segctor_new()
2685 sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT; in nilfs_segctor_new()
2686 sci->sc_mjcp_freq = HZ * NILFS_SC_DEFAULT_SR_FREQ; in nilfs_segctor_new()
2687 sci->sc_watermark = NILFS_SC_DEFAULT_WATERMARK; in nilfs_segctor_new()
2689 if (nilfs->ns_interval) in nilfs_segctor_new()
2690 sci->sc_interval = HZ * nilfs->ns_interval; in nilfs_segctor_new()
2691 if (nilfs->ns_watermark) in nilfs_segctor_new()
2692 sci->sc_watermark = nilfs->ns_watermark; in nilfs_segctor_new()
2693 return sci; in nilfs_segctor_new()
2696 static void nilfs_segctor_write_out(struct nilfs_sc_info *sci) in nilfs_segctor_write_out() argument
2705 struct nilfs_transaction_info ti; in nilfs_segctor_write_out() local
2707 nilfs_transaction_lock(sci->sc_super, &ti, 0); in nilfs_segctor_write_out()
2708 ret = nilfs_segctor_construct(sci, SC_LSEG_SR); in nilfs_segctor_write_out()
2709 nilfs_transaction_unlock(sci->sc_super); in nilfs_segctor_write_out()
2711 flush_work(&sci->sc_iput_work); in nilfs_segctor_write_out()
2713 } while (ret && retrycount-- > 0); in nilfs_segctor_write_out()
2717 * nilfs_segctor_destroy - destroy the segment constructor.
2718 * @sci: nilfs_sc_info
2724 static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) in nilfs_segctor_destroy() argument
2726 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_destroy()
2729 up_write(&nilfs->ns_segctor_sem); in nilfs_segctor_destroy()
2731 spin_lock(&sci->sc_state_lock); in nilfs_segctor_destroy()
2732 nilfs_segctor_kill_thread(sci); in nilfs_segctor_destroy()
2733 flag = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) || sci->sc_flush_request in nilfs_segctor_destroy()
2734 || sci->sc_seq_request != sci->sc_seq_done); in nilfs_segctor_destroy()
2735 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_destroy()
2737 if (flush_work(&sci->sc_iput_work)) in nilfs_segctor_destroy()
2740 if (flag || !nilfs_segctor_confirm(sci)) in nilfs_segctor_destroy()
2741 nilfs_segctor_write_out(sci); in nilfs_segctor_destroy()
2743 if (!list_empty(&sci->sc_dirty_files)) { in nilfs_segctor_destroy()
2744 nilfs_warn(sci->sc_super, in nilfs_segctor_destroy()
2746 nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1); in nilfs_segctor_destroy()
2749 if (!list_empty(&sci->sc_iput_queue)) { in nilfs_segctor_destroy()
2750 nilfs_warn(sci->sc_super, in nilfs_segctor_destroy()
2752 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 1); in nilfs_segctor_destroy()
2755 WARN_ON(!list_empty(&sci->sc_segbufs)); in nilfs_segctor_destroy()
2756 WARN_ON(!list_empty(&sci->sc_write_logs)); in nilfs_segctor_destroy()
2758 nilfs_put_root(sci->sc_root); in nilfs_segctor_destroy()
2760 down_write(&nilfs->ns_segctor_sem); in nilfs_segctor_destroy()
2762 del_timer_sync(&sci->sc_timer); in nilfs_segctor_destroy()
2763 kfree(sci); in nilfs_segctor_destroy()
2767 * nilfs_attach_log_writer - attach log writer
2777 * %-ENOMEM - Insufficient memory available.
2781 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_attach_log_writer()
2784 if (nilfs->ns_writer) { in nilfs_attach_log_writer()
2786 * This happens if the filesystem is made read-only by in nilfs_attach_log_writer()
2794 nilfs->ns_writer = nilfs_segctor_new(sb, root); in nilfs_attach_log_writer()
2795 if (!nilfs->ns_writer) in nilfs_attach_log_writer()
2796 return -ENOMEM; in nilfs_attach_log_writer()
2798 inode_attach_wb(nilfs->ns_bdev->bd_inode, NULL); in nilfs_attach_log_writer()
2800 err = nilfs_segctor_start_thread(nilfs->ns_writer); in nilfs_attach_log_writer()
2808 * nilfs_detach_log_writer - destroy log writer
2816 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_detach_log_writer()
2819 down_write(&nilfs->ns_segctor_sem); in nilfs_detach_log_writer()
2820 if (nilfs->ns_writer) { in nilfs_detach_log_writer()
2821 nilfs_segctor_destroy(nilfs->ns_writer); in nilfs_detach_log_writer()
2822 nilfs->ns_writer = NULL; in nilfs_detach_log_writer()
2826 spin_lock(&nilfs->ns_inode_lock); in nilfs_detach_log_writer()
2827 if (!list_empty(&nilfs->ns_dirty_files)) { in nilfs_detach_log_writer()
2828 list_splice_init(&nilfs->ns_dirty_files, &garbage_list); in nilfs_detach_log_writer()
2832 spin_unlock(&nilfs->ns_inode_lock); in nilfs_detach_log_writer()
2833 up_write(&nilfs->ns_segctor_sem); in nilfs_detach_log_writer()