Lines Matching +full:sci +full:- +full:reset
1 // SPDX-License-Identifier: GPL-2.0+
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)(a) - (__s32)(b) >= 0))
144 struct nilfs_transaction_info *cur_ti = current->journal_info; in nilfs_prepare_segment_lock()
148 if (cur_ti->ti_magic == NILFS_TI_MAGIC) in nilfs_prepare_segment_lock()
149 return ++cur_ti->ti_count; in nilfs_prepare_segment_lock()
157 save = current->journal_info; in nilfs_prepare_segment_lock()
162 return -ENOMEM; in nilfs_prepare_segment_lock()
163 ti->ti_flags = NILFS_TI_DYNAMIC_ALLOC; in nilfs_prepare_segment_lock()
165 ti->ti_flags = 0; in nilfs_prepare_segment_lock()
167 ti->ti_count = 0; in nilfs_prepare_segment_lock()
168 ti->ti_save = save; in nilfs_prepare_segment_lock()
169 ti->ti_magic = NILFS_TI_MAGIC; in nilfs_prepare_segment_lock()
170 current->journal_info = ti; in nilfs_prepare_segment_lock()
175 * nilfs_transaction_begin - start indivisible file operations.
188 * the outermost call. If a pre-allocated struct is given to @ti, it is used
197 * %-ENOMEM - Insufficient memory available.
199 * %-ENOSPC - No space left on device
212 trace_ti = current->journal_info; in nilfs_transaction_begin()
215 trace_ti->ti_count, trace_ti->ti_flags, in nilfs_transaction_begin()
222 nilfs = sb->s_fs_info; in nilfs_transaction_begin()
223 down_read(&nilfs->ns_segctor_sem); in nilfs_transaction_begin()
225 up_read(&nilfs->ns_segctor_sem); in nilfs_transaction_begin()
226 ret = -ENOSPC; in nilfs_transaction_begin()
230 trace_ti = current->journal_info; in nilfs_transaction_begin()
231 trace_nilfs2_transaction_transition(sb, trace_ti, trace_ti->ti_count, in nilfs_transaction_begin()
232 trace_ti->ti_flags, in nilfs_transaction_begin()
237 ti = current->journal_info; in nilfs_transaction_begin()
238 current->journal_info = ti->ti_save; in nilfs_transaction_begin()
239 if (ti->ti_flags & NILFS_TI_DYNAMIC_ALLOC) in nilfs_transaction_begin()
246 * nilfs_transaction_commit - commit indivisible file operations.
258 struct nilfs_transaction_info *ti = current->journal_info; in nilfs_transaction_commit()
259 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_transaction_commit()
262 BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC); in nilfs_transaction_commit()
263 ti->ti_flags |= NILFS_TI_COMMIT; in nilfs_transaction_commit()
264 if (ti->ti_count > 0) { in nilfs_transaction_commit()
265 ti->ti_count--; in nilfs_transaction_commit()
266 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_commit()
267 ti->ti_flags, TRACE_NILFS2_TRANSACTION_COMMIT); in nilfs_transaction_commit()
270 if (nilfs->ns_writer) { in nilfs_transaction_commit()
271 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_transaction_commit() local
273 if (ti->ti_flags & NILFS_TI_COMMIT) in nilfs_transaction_commit()
274 nilfs_segctor_start_timer(sci); in nilfs_transaction_commit()
275 if (atomic_read(&nilfs->ns_ndirtyblks) > sci->sc_watermark) in nilfs_transaction_commit()
276 nilfs_segctor_do_flush(sci, 0); in nilfs_transaction_commit()
278 up_read(&nilfs->ns_segctor_sem); in nilfs_transaction_commit()
279 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_commit()
280 ti->ti_flags, TRACE_NILFS2_TRANSACTION_COMMIT); in nilfs_transaction_commit()
282 current->journal_info = ti->ti_save; in nilfs_transaction_commit()
284 if (ti->ti_flags & NILFS_TI_SYNC) in nilfs_transaction_commit()
286 if (ti->ti_flags & NILFS_TI_DYNAMIC_ALLOC) in nilfs_transaction_commit()
294 struct nilfs_transaction_info *ti = current->journal_info; in nilfs_transaction_abort()
295 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_transaction_abort()
297 BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC); in nilfs_transaction_abort()
298 if (ti->ti_count > 0) { in nilfs_transaction_abort()
299 ti->ti_count--; in nilfs_transaction_abort()
300 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_abort()
301 ti->ti_flags, TRACE_NILFS2_TRANSACTION_ABORT); in nilfs_transaction_abort()
304 up_read(&nilfs->ns_segctor_sem); in nilfs_transaction_abort()
306 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_abort()
307 ti->ti_flags, TRACE_NILFS2_TRANSACTION_ABORT); in nilfs_transaction_abort()
309 current->journal_info = ti->ti_save; in nilfs_transaction_abort()
310 if (ti->ti_flags & NILFS_TI_DYNAMIC_ALLOC) in nilfs_transaction_abort()
317 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_relax_pressure_in_lock()
318 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_relax_pressure_in_lock() local
320 if (sb_rdonly(sb) || unlikely(!sci) || !sci->sc_flush_request) in nilfs_relax_pressure_in_lock()
323 set_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags); in nilfs_relax_pressure_in_lock()
324 up_read(&nilfs->ns_segctor_sem); in nilfs_relax_pressure_in_lock()
326 down_write(&nilfs->ns_segctor_sem); in nilfs_relax_pressure_in_lock()
327 if (sci->sc_flush_request && in nilfs_relax_pressure_in_lock()
328 test_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags)) { in nilfs_relax_pressure_in_lock()
329 struct nilfs_transaction_info *ti = current->journal_info; in nilfs_relax_pressure_in_lock()
331 ti->ti_flags |= NILFS_TI_WRITER; in nilfs_relax_pressure_in_lock()
332 nilfs_segctor_do_immediate_flush(sci); in nilfs_relax_pressure_in_lock()
333 ti->ti_flags &= ~NILFS_TI_WRITER; in nilfs_relax_pressure_in_lock()
335 downgrade_write(&nilfs->ns_segctor_sem); in nilfs_relax_pressure_in_lock()
342 struct nilfs_transaction_info *cur_ti = current->journal_info; in nilfs_transaction_lock()
343 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_transaction_lock()
344 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_transaction_lock() local
347 ti->ti_flags = NILFS_TI_WRITER; in nilfs_transaction_lock()
348 ti->ti_count = 0; in nilfs_transaction_lock()
349 ti->ti_save = cur_ti; in nilfs_transaction_lock()
350 ti->ti_magic = NILFS_TI_MAGIC; in nilfs_transaction_lock()
351 current->journal_info = ti; in nilfs_transaction_lock()
354 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_lock()
355 ti->ti_flags, TRACE_NILFS2_TRANSACTION_TRYLOCK); in nilfs_transaction_lock()
357 down_write(&nilfs->ns_segctor_sem); in nilfs_transaction_lock()
358 if (!test_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags)) in nilfs_transaction_lock()
361 nilfs_segctor_do_immediate_flush(sci); in nilfs_transaction_lock()
363 up_write(&nilfs->ns_segctor_sem); in nilfs_transaction_lock()
367 ti->ti_flags |= NILFS_TI_GC; in nilfs_transaction_lock()
369 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_lock()
370 ti->ti_flags, TRACE_NILFS2_TRANSACTION_LOCK); in nilfs_transaction_lock()
375 struct nilfs_transaction_info *ti = current->journal_info; in nilfs_transaction_unlock()
376 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_transaction_unlock()
378 BUG_ON(ti == NULL || ti->ti_magic != NILFS_TI_MAGIC); in nilfs_transaction_unlock()
379 BUG_ON(ti->ti_count > 0); in nilfs_transaction_unlock()
381 up_write(&nilfs->ns_segctor_sem); in nilfs_transaction_unlock()
382 current->journal_info = ti->ti_save; in nilfs_transaction_unlock()
384 trace_nilfs2_transaction_transition(sb, ti, ti->ti_count, in nilfs_transaction_unlock()
385 ti->ti_flags, TRACE_NILFS2_TRANSACTION_UNLOCK); in nilfs_transaction_unlock()
388 static void *nilfs_segctor_map_segsum_entry(struct nilfs_sc_info *sci, in nilfs_segctor_map_segsum_entry() argument
392 struct nilfs_segment_buffer *segbuf = sci->sc_curseg; in nilfs_segctor_map_segsum_entry()
393 unsigned int blocksize = sci->sc_super->s_blocksize; in nilfs_segctor_map_segsum_entry()
396 if (unlikely(ssp->offset + bytes > blocksize)) { in nilfs_segctor_map_segsum_entry()
397 ssp->offset = 0; in nilfs_segctor_map_segsum_entry()
398 BUG_ON(NILFS_SEGBUF_BH_IS_LAST(ssp->bh, in nilfs_segctor_map_segsum_entry()
399 &segbuf->sb_segsum_buffers)); in nilfs_segctor_map_segsum_entry()
400 ssp->bh = NILFS_SEGBUF_NEXT_BH(ssp->bh); in nilfs_segctor_map_segsum_entry()
402 p = ssp->bh->b_data + ssp->offset; in nilfs_segctor_map_segsum_entry()
403 ssp->offset += bytes; in nilfs_segctor_map_segsum_entry()
408 * nilfs_segctor_reset_segment_buffer - reset the current segment buffer
409 * @sci: nilfs_sc_info
411 static int nilfs_segctor_reset_segment_buffer(struct nilfs_sc_info *sci) in nilfs_segctor_reset_segment_buffer() argument
413 struct nilfs_segment_buffer *segbuf = sci->sc_curseg; in nilfs_segctor_reset_segment_buffer()
421 err = nilfs_segbuf_reset(segbuf, flags, sci->sc_seg_ctime, sci->sc_cno); in nilfs_segctor_reset_segment_buffer()
425 sumbh = NILFS_SEGBUF_FIRST_BH(&segbuf->sb_segsum_buffers); in nilfs_segctor_reset_segment_buffer()
426 sumbytes = segbuf->sb_sum.sumbytes; in nilfs_segctor_reset_segment_buffer()
427 sci->sc_finfo_ptr.bh = sumbh; sci->sc_finfo_ptr.offset = sumbytes; in nilfs_segctor_reset_segment_buffer()
428 sci->sc_binfo_ptr.bh = sumbh; sci->sc_binfo_ptr.offset = sumbytes; in nilfs_segctor_reset_segment_buffer()
429 sci->sc_blk_cnt = sci->sc_datablk_cnt = 0; in nilfs_segctor_reset_segment_buffer()
433 static int nilfs_segctor_feed_segment(struct nilfs_sc_info *sci) in nilfs_segctor_feed_segment() argument
435 sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks; in nilfs_segctor_feed_segment()
436 if (NILFS_SEGBUF_IS_LAST(sci->sc_curseg, &sci->sc_segbufs)) in nilfs_segctor_feed_segment()
437 return -E2BIG; /* in nilfs_segctor_feed_segment()
441 sci->sc_curseg = NILFS_NEXT_SEGBUF(sci->sc_curseg); in nilfs_segctor_feed_segment()
442 return nilfs_segctor_reset_segment_buffer(sci); in nilfs_segctor_feed_segment()
445 static int nilfs_segctor_add_super_root(struct nilfs_sc_info *sci) in nilfs_segctor_add_super_root() argument
447 struct nilfs_segment_buffer *segbuf = sci->sc_curseg; in nilfs_segctor_add_super_root()
450 if (segbuf->sb_sum.nblocks >= segbuf->sb_rest_blocks) { in nilfs_segctor_add_super_root()
451 err = nilfs_segctor_feed_segment(sci); in nilfs_segctor_add_super_root()
454 segbuf = sci->sc_curseg; in nilfs_segctor_add_super_root()
456 err = nilfs_segbuf_extend_payload(segbuf, &segbuf->sb_super_root); in nilfs_segctor_add_super_root()
458 segbuf->sb_sum.flags |= NILFS_SS_SR; in nilfs_segctor_add_super_root()
466 struct nilfs_sc_info *sci, const struct nilfs_segsum_pointer *ssp, in nilfs_segctor_segsum_block_required() argument
469 unsigned int blocksize = sci->sc_super->s_blocksize; in nilfs_segctor_segsum_block_required()
472 return ssp->offset + binfo_size + in nilfs_segctor_segsum_block_required()
473 (!sci->sc_blk_cnt ? sizeof(struct nilfs_finfo) : 0) > in nilfs_segctor_segsum_block_required()
477 static void nilfs_segctor_begin_finfo(struct nilfs_sc_info *sci, in nilfs_segctor_begin_finfo() argument
480 sci->sc_curseg->sb_sum.nfinfo++; in nilfs_segctor_begin_finfo()
481 sci->sc_binfo_ptr = sci->sc_finfo_ptr; in nilfs_segctor_begin_finfo()
483 sci, &sci->sc_binfo_ptr, sizeof(struct nilfs_finfo)); in nilfs_segctor_begin_finfo()
485 if (NILFS_I(inode)->i_root && in nilfs_segctor_begin_finfo()
486 !test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags)) in nilfs_segctor_begin_finfo()
487 set_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); in nilfs_segctor_begin_finfo()
491 static void nilfs_segctor_end_finfo(struct nilfs_sc_info *sci, in nilfs_segctor_end_finfo() argument
499 if (sci->sc_blk_cnt == 0) in nilfs_segctor_end_finfo()
504 if (test_bit(NILFS_I_GCINODE, &ii->i_state)) in nilfs_segctor_end_finfo()
505 cno = ii->i_cno; in nilfs_segctor_end_finfo()
506 else if (NILFS_ROOT_METADATA_FILE(inode->i_ino)) in nilfs_segctor_end_finfo()
509 cno = sci->sc_cno; in nilfs_segctor_end_finfo()
511 finfo = nilfs_segctor_map_segsum_entry(sci, &sci->sc_finfo_ptr, in nilfs_segctor_end_finfo()
513 finfo->fi_ino = cpu_to_le64(inode->i_ino); in nilfs_segctor_end_finfo()
514 finfo->fi_nblocks = cpu_to_le32(sci->sc_blk_cnt); in nilfs_segctor_end_finfo()
515 finfo->fi_ndatablk = cpu_to_le32(sci->sc_datablk_cnt); in nilfs_segctor_end_finfo()
516 finfo->fi_cno = cpu_to_le64(cno); in nilfs_segctor_end_finfo()
518 segbuf = sci->sc_curseg; in nilfs_segctor_end_finfo()
519 segbuf->sb_sum.sumbytes = sci->sc_binfo_ptr.offset + in nilfs_segctor_end_finfo()
520 sci->sc_super->s_blocksize * (segbuf->sb_sum.nsumblk - 1); in nilfs_segctor_end_finfo()
521 sci->sc_finfo_ptr = sci->sc_binfo_ptr; in nilfs_segctor_end_finfo()
522 sci->sc_blk_cnt = sci->sc_datablk_cnt = 0; in nilfs_segctor_end_finfo()
525 static int nilfs_segctor_add_file_block(struct nilfs_sc_info *sci, in nilfs_segctor_add_file_block() argument
534 segbuf = sci->sc_curseg; in nilfs_segctor_add_file_block()
536 sci, &sci->sc_binfo_ptr, binfo_size); in nilfs_segctor_add_file_block()
537 if (segbuf->sb_sum.nblocks + required + 1 > segbuf->sb_rest_blocks) { in nilfs_segctor_add_file_block()
538 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_add_file_block()
539 err = nilfs_segctor_feed_segment(sci); in nilfs_segctor_add_file_block()
549 if (sci->sc_blk_cnt == 0) in nilfs_segctor_add_file_block()
550 nilfs_segctor_begin_finfo(sci, inode); in nilfs_segctor_add_file_block()
552 nilfs_segctor_map_segsum_entry(sci, &sci->sc_binfo_ptr, binfo_size); in nilfs_segctor_add_file_block()
555 sci->sc_blk_cnt++; in nilfs_segctor_add_file_block()
563 static int nilfs_collect_file_data(struct nilfs_sc_info *sci, in nilfs_collect_file_data() argument
568 err = nilfs_bmap_propagate(NILFS_I(inode)->i_bmap, bh); in nilfs_collect_file_data()
572 err = nilfs_segctor_add_file_block(sci, bh, inode, in nilfs_collect_file_data()
575 sci->sc_datablk_cnt++; in nilfs_collect_file_data()
579 static int nilfs_collect_file_node(struct nilfs_sc_info *sci, in nilfs_collect_file_node() argument
583 return nilfs_bmap_propagate(NILFS_I(inode)->i_bmap, bh); in nilfs_collect_file_node()
586 static int nilfs_collect_file_bmap(struct nilfs_sc_info *sci, in nilfs_collect_file_bmap() argument
591 return nilfs_segctor_add_file_block(sci, bh, inode, sizeof(__le64)); in nilfs_collect_file_bmap()
594 static void nilfs_write_file_data_binfo(struct nilfs_sc_info *sci, in nilfs_write_file_data_binfo() argument
599 sci, ssp, sizeof(*binfo_v)); in nilfs_write_file_data_binfo()
600 *binfo_v = binfo->bi_v; in nilfs_write_file_data_binfo()
603 static void nilfs_write_file_node_binfo(struct nilfs_sc_info *sci, in nilfs_write_file_node_binfo() argument
608 sci, ssp, sizeof(*vblocknr)); in nilfs_write_file_node_binfo()
609 *vblocknr = binfo->bi_v.bi_vblocknr; in nilfs_write_file_node_binfo()
620 static int nilfs_collect_dat_data(struct nilfs_sc_info *sci, in nilfs_collect_dat_data() argument
625 err = nilfs_bmap_propagate(NILFS_I(inode)->i_bmap, bh); in nilfs_collect_dat_data()
629 err = nilfs_segctor_add_file_block(sci, bh, inode, sizeof(__le64)); in nilfs_collect_dat_data()
631 sci->sc_datablk_cnt++; in nilfs_collect_dat_data()
635 static int nilfs_collect_dat_bmap(struct nilfs_sc_info *sci, in nilfs_collect_dat_bmap() argument
639 return nilfs_segctor_add_file_block(sci, bh, inode, in nilfs_collect_dat_bmap()
643 static void nilfs_write_dat_data_binfo(struct nilfs_sc_info *sci, in nilfs_write_dat_data_binfo() argument
647 __le64 *blkoff = nilfs_segctor_map_segsum_entry(sci, ssp, in nilfs_write_dat_data_binfo()
649 *blkoff = binfo->bi_dat.bi_blkoff; in nilfs_write_dat_data_binfo()
652 static void nilfs_write_dat_node_binfo(struct nilfs_sc_info *sci, in nilfs_write_dat_node_binfo() argument
657 nilfs_segctor_map_segsum_entry(sci, ssp, sizeof(*binfo_dat)); in nilfs_write_dat_node_binfo()
658 *binfo_dat = binfo->bi_dat; in nilfs_write_dat_node_binfo()
682 struct address_space *mapping = inode->i_mapping; in nilfs_lookup_dirty_data_buffers()
690 * A valid range is given for sync-ing data pages. The in nilfs_lookup_dirty_data_buffers()
691 * range is rounded to per-page; extra dirty buffers in nilfs_lookup_dirty_data_buffers()
718 list_add_tail(&bh->b_assoc_buffers, listp); in nilfs_lookup_dirty_data_buffers()
725 } while (bh = bh->b_this_page, bh != head); in nilfs_lookup_dirty_data_buffers()
736 struct inode *btnc_inode = ii->i_assoc_inode; in nilfs_lookup_dirty_node_buffers()
747 while (pagevec_lookup_tag(&pvec, btnc_inode->i_mapping, &index, in nilfs_lookup_dirty_node_buffers()
755 list_add_tail(&bh->b_assoc_buffers, in nilfs_lookup_dirty_node_buffers()
758 bh = bh->b_this_page; in nilfs_lookup_dirty_node_buffers()
774 spin_lock(&nilfs->ns_inode_lock); in nilfs_dispose_list()
776 list_del_init(&ii->i_dirty); in nilfs_dispose_list()
778 if (unlikely(ii->i_bh)) { in nilfs_dispose_list()
779 brelse(ii->i_bh); in nilfs_dispose_list()
780 ii->i_bh = NULL; in nilfs_dispose_list()
782 } else if (test_bit(NILFS_I_DIRTY, &ii->i_state)) { in nilfs_dispose_list()
783 set_bit(NILFS_I_QUEUED, &ii->i_state); in nilfs_dispose_list()
784 list_add_tail(&ii->i_dirty, in nilfs_dispose_list()
785 &nilfs->ns_dirty_files); in nilfs_dispose_list()
792 spin_unlock(&nilfs->ns_inode_lock); in nilfs_dispose_list()
794 for (pii = ivec; nv > 0; pii++, nv--) in nilfs_dispose_list()
795 iput(&(*pii)->vfs_inode); in nilfs_dispose_list()
801 struct nilfs_sc_info *sci = container_of(work, struct nilfs_sc_info, in nilfs_iput_work_func() local
803 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_iput_work_func()
805 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 0); in nilfs_iput_work_func()
813 if (nilfs_mdt_fetch_dirty(root->ifile)) in nilfs_test_metadata_dirty()
815 if (nilfs_mdt_fetch_dirty(nilfs->ns_cpfile)) in nilfs_test_metadata_dirty()
817 if (nilfs_mdt_fetch_dirty(nilfs->ns_sufile)) in nilfs_test_metadata_dirty()
819 if ((ret || nilfs_doing_gc()) && nilfs_mdt_fetch_dirty(nilfs->ns_dat)) in nilfs_test_metadata_dirty()
824 static int nilfs_segctor_clean(struct nilfs_sc_info *sci) in nilfs_segctor_clean() argument
826 return list_empty(&sci->sc_dirty_files) && in nilfs_segctor_clean()
827 !test_bit(NILFS_SC_DIRTY, &sci->sc_flags) && in nilfs_segctor_clean()
828 sci->sc_nfreesegs == 0 && in nilfs_segctor_clean()
829 (!nilfs_doing_gc() || list_empty(&sci->sc_gc_inodes)); in nilfs_segctor_clean()
832 static int nilfs_segctor_confirm(struct nilfs_sc_info *sci) in nilfs_segctor_confirm() argument
834 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_confirm()
837 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) in nilfs_segctor_confirm()
838 set_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_confirm()
840 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_confirm()
841 if (list_empty(&nilfs->ns_dirty_files) && nilfs_segctor_clean(sci)) in nilfs_segctor_confirm()
844 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_confirm()
848 static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci) in nilfs_segctor_clear_metadata_dirty() argument
850 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_clear_metadata_dirty()
852 nilfs_mdt_clear_dirty(sci->sc_root->ifile); in nilfs_segctor_clear_metadata_dirty()
853 nilfs_mdt_clear_dirty(nilfs->ns_cpfile); in nilfs_segctor_clear_metadata_dirty()
854 nilfs_mdt_clear_dirty(nilfs->ns_sufile); in nilfs_segctor_clear_metadata_dirty()
855 nilfs_mdt_clear_dirty(nilfs->ns_dat); in nilfs_segctor_clear_metadata_dirty()
858 static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci) in nilfs_segctor_create_checkpoint() argument
860 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_create_checkpoint()
866 err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, 1, in nilfs_segctor_create_checkpoint()
875 nilfs_mdt_mark_dirty(nilfs->ns_cpfile); in nilfs_segctor_create_checkpoint()
877 nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); in nilfs_segctor_create_checkpoint()
878 } else if (err == -EINVAL || err == -ENOENT) { in nilfs_segctor_create_checkpoint()
879 nilfs_error(sci->sc_super, in nilfs_segctor_create_checkpoint()
881 err = -EIO; in nilfs_segctor_create_checkpoint()
886 static int nilfs_segctor_fill_in_checkpoint(struct nilfs_sc_info *sci) in nilfs_segctor_fill_in_checkpoint() argument
888 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_fill_in_checkpoint()
893 err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, 0, in nilfs_segctor_fill_in_checkpoint()
896 if (err == -EINVAL || err == -ENOENT) { in nilfs_segctor_fill_in_checkpoint()
897 nilfs_error(sci->sc_super, in nilfs_segctor_fill_in_checkpoint()
899 err = -EIO; in nilfs_segctor_fill_in_checkpoint()
903 raw_cp->cp_snapshot_list.ssl_next = 0; in nilfs_segctor_fill_in_checkpoint()
904 raw_cp->cp_snapshot_list.ssl_prev = 0; in nilfs_segctor_fill_in_checkpoint()
905 raw_cp->cp_inodes_count = in nilfs_segctor_fill_in_checkpoint()
906 cpu_to_le64(atomic64_read(&sci->sc_root->inodes_count)); in nilfs_segctor_fill_in_checkpoint()
907 raw_cp->cp_blocks_count = in nilfs_segctor_fill_in_checkpoint()
908 cpu_to_le64(atomic64_read(&sci->sc_root->blocks_count)); in nilfs_segctor_fill_in_checkpoint()
909 raw_cp->cp_nblk_inc = in nilfs_segctor_fill_in_checkpoint()
910 cpu_to_le64(sci->sc_nblk_inc + sci->sc_nblk_this_inc); in nilfs_segctor_fill_in_checkpoint()
911 raw_cp->cp_create = cpu_to_le64(sci->sc_seg_ctime); in nilfs_segctor_fill_in_checkpoint()
912 raw_cp->cp_cno = cpu_to_le64(nilfs->ns_cno); in nilfs_segctor_fill_in_checkpoint()
914 if (test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags)) in nilfs_segctor_fill_in_checkpoint()
919 nilfs_write_inode_common(sci->sc_root->ifile, in nilfs_segctor_fill_in_checkpoint()
920 &raw_cp->cp_ifile_inode, 1); in nilfs_segctor_fill_in_checkpoint()
921 nilfs_cpfile_put_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); in nilfs_segctor_fill_in_checkpoint()
935 if (test_bit(NILFS_I_BMAP, &ii->i_state)) { in nilfs_fill_in_file_bmap()
936 ibh = ii->i_bh; in nilfs_fill_in_file_bmap()
938 raw_inode = nilfs_ifile_map_inode(ifile, ii->vfs_inode.i_ino, in nilfs_fill_in_file_bmap()
940 nilfs_bmap_write(ii->i_bmap, raw_inode); in nilfs_fill_in_file_bmap()
941 nilfs_ifile_unmap_inode(ifile, ii->vfs_inode.i_ino, ibh); in nilfs_fill_in_file_bmap()
945 static void nilfs_segctor_fill_in_file_bmap(struct nilfs_sc_info *sci) in nilfs_segctor_fill_in_file_bmap() argument
949 list_for_each_entry(ii, &sci->sc_dirty_files, i_dirty) { in nilfs_segctor_fill_in_file_bmap()
950 nilfs_fill_in_file_bmap(sci->sc_root->ifile, ii); in nilfs_segctor_fill_in_file_bmap()
951 set_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_segctor_fill_in_file_bmap()
955 static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci, in nilfs_segctor_fill_in_super_root() argument
962 bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root; in nilfs_segctor_fill_in_super_root()
963 raw_sr = (struct nilfs_super_root *)bh_sr->b_data; in nilfs_segctor_fill_in_super_root()
964 isz = nilfs->ns_inode_size; in nilfs_segctor_fill_in_super_root()
967 raw_sr->sr_bytes = cpu_to_le16(srsz); in nilfs_segctor_fill_in_super_root()
968 raw_sr->sr_nongc_ctime in nilfs_segctor_fill_in_super_root()
970 nilfs->ns_nongc_ctime : sci->sc_seg_ctime); in nilfs_segctor_fill_in_super_root()
971 raw_sr->sr_flags = 0; in nilfs_segctor_fill_in_super_root()
973 nilfs_write_inode_common(nilfs->ns_dat, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
975 nilfs_write_inode_common(nilfs->ns_cpfile, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
977 nilfs_write_inode_common(nilfs->ns_sufile, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
979 memset((void *)raw_sr + srsz, 0, nilfs->ns_blocksize - srsz); in nilfs_segctor_fill_in_super_root()
987 if (test_bit(NILFS_I_COLLECTED, &ii->i_state)) in nilfs_redirty_inodes()
988 clear_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_redirty_inodes()
997 if (!test_and_clear_bit(NILFS_I_COLLECTED, &ii->i_state)) in nilfs_drop_collected_inodes()
1000 clear_bit(NILFS_I_INODE_SYNC, &ii->i_state); in nilfs_drop_collected_inodes()
1001 set_bit(NILFS_I_UPDATED, &ii->i_state); in nilfs_drop_collected_inodes()
1005 static int nilfs_segctor_apply_buffers(struct nilfs_sc_info *sci, in nilfs_segctor_apply_buffers() argument
1017 list_del_init(&bh->b_assoc_buffers); in nilfs_segctor_apply_buffers()
1018 err = collect(sci, bh, inode); in nilfs_segctor_apply_buffers()
1030 list_del_init(&bh->b_assoc_buffers); in nilfs_segctor_apply_buffers()
1036 static size_t nilfs_segctor_buffer_rest(struct nilfs_sc_info *sci) in nilfs_segctor_buffer_rest() argument
1039 return sci->sc_segbuf_nblocks - in nilfs_segctor_buffer_rest()
1040 (sci->sc_nblk_this_inc + sci->sc_curseg->sb_sum.nblocks); in nilfs_segctor_buffer_rest()
1043 static int nilfs_segctor_scan_file(struct nilfs_sc_info *sci, in nilfs_segctor_scan_file() argument
1051 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) { in nilfs_segctor_scan_file()
1052 size_t n, rest = nilfs_segctor_buffer_rest(sci); in nilfs_segctor_scan_file()
1058 sci, inode, &data_buffers, in nilfs_segctor_scan_file()
1059 sc_ops->collect_data); in nilfs_segctor_scan_file()
1060 BUG_ON(!err); /* always receive -E2BIG or true error */ in nilfs_segctor_scan_file()
1066 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) { in nilfs_segctor_scan_file()
1068 sci, inode, &data_buffers, sc_ops->collect_data); in nilfs_segctor_scan_file()
1072 sci, inode, &node_buffers, NULL); in nilfs_segctor_scan_file()
1075 sci->sc_stage.flags |= NILFS_CF_NODE; in nilfs_segctor_scan_file()
1079 sci, inode, &node_buffers, sc_ops->collect_node); in nilfs_segctor_scan_file()
1083 nilfs_bmap_lookup_dirty_buffers(NILFS_I(inode)->i_bmap, &node_buffers); in nilfs_segctor_scan_file()
1085 sci, inode, &node_buffers, sc_ops->collect_bmap); in nilfs_segctor_scan_file()
1089 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_scan_file()
1090 sci->sc_stage.flags &= ~NILFS_CF_NODE; in nilfs_segctor_scan_file()
1096 static int nilfs_segctor_scan_file_dsync(struct nilfs_sc_info *sci, in nilfs_segctor_scan_file_dsync() argument
1100 size_t n, rest = nilfs_segctor_buffer_rest(sci); in nilfs_segctor_scan_file_dsync()
1104 sci->sc_dsync_start, in nilfs_segctor_scan_file_dsync()
1105 sci->sc_dsync_end); in nilfs_segctor_scan_file_dsync()
1107 err = nilfs_segctor_apply_buffers(sci, inode, &data_buffers, in nilfs_segctor_scan_file_dsync()
1110 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_scan_file_dsync()
1112 /* always receive -E2BIG or true error if n > rest */ in nilfs_segctor_scan_file_dsync()
1117 static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_collect_blocks() argument
1119 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_collect_blocks()
1125 switch (nilfs_sc_cstage_get(sci)) { in nilfs_segctor_collect_blocks()
1127 /* Pre-processes */ in nilfs_segctor_collect_blocks()
1128 sci->sc_stage.flags = 0; in nilfs_segctor_collect_blocks()
1130 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) { in nilfs_segctor_collect_blocks()
1131 sci->sc_nblk_inc = 0; in nilfs_segctor_collect_blocks()
1132 sci->sc_curseg->sb_sum.flags = NILFS_SS_LOGBGN; in nilfs_segctor_collect_blocks()
1134 nilfs_sc_cstage_set(sci, NILFS_ST_DSYNC); in nilfs_segctor_collect_blocks()
1139 sci->sc_stage.dirty_file_ptr = NULL; in nilfs_segctor_collect_blocks()
1140 sci->sc_stage.gc_inode_ptr = NULL; in nilfs_segctor_collect_blocks()
1142 nilfs_sc_cstage_set(sci, NILFS_ST_DAT); in nilfs_segctor_collect_blocks()
1145 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1149 head = &sci->sc_gc_inodes; in nilfs_segctor_collect_blocks()
1150 ii = list_prepare_entry(sci->sc_stage.gc_inode_ptr, in nilfs_segctor_collect_blocks()
1154 sci, &ii->vfs_inode, in nilfs_segctor_collect_blocks()
1157 sci->sc_stage.gc_inode_ptr = list_entry( in nilfs_segctor_collect_blocks()
1158 ii->i_dirty.prev, in nilfs_segctor_collect_blocks()
1163 set_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_segctor_collect_blocks()
1165 sci->sc_stage.gc_inode_ptr = NULL; in nilfs_segctor_collect_blocks()
1167 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1170 head = &sci->sc_dirty_files; in nilfs_segctor_collect_blocks()
1171 ii = list_prepare_entry(sci->sc_stage.dirty_file_ptr, head, in nilfs_segctor_collect_blocks()
1174 clear_bit(NILFS_I_DIRTY, &ii->i_state); in nilfs_segctor_collect_blocks()
1176 err = nilfs_segctor_scan_file(sci, &ii->vfs_inode, in nilfs_segctor_collect_blocks()
1179 sci->sc_stage.dirty_file_ptr = in nilfs_segctor_collect_blocks()
1180 list_entry(ii->i_dirty.prev, in nilfs_segctor_collect_blocks()
1185 /* sci->sc_stage.dirty_file_ptr = NILFS_I(inode); */ in nilfs_segctor_collect_blocks()
1188 sci->sc_stage.dirty_file_ptr = NULL; in nilfs_segctor_collect_blocks()
1190 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1193 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1194 sci->sc_stage.flags |= NILFS_CF_IFILE_STARTED; in nilfs_segctor_collect_blocks()
1197 err = nilfs_segctor_scan_file(sci, sci->sc_root->ifile, in nilfs_segctor_collect_blocks()
1201 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1203 err = nilfs_segctor_create_checkpoint(sci); in nilfs_segctor_collect_blocks()
1208 err = nilfs_segctor_scan_file(sci, nilfs->ns_cpfile, in nilfs_segctor_collect_blocks()
1212 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1215 err = nilfs_sufile_freev(nilfs->ns_sufile, sci->sc_freesegs, in nilfs_segctor_collect_blocks()
1216 sci->sc_nfreesegs, &ndone); in nilfs_segctor_collect_blocks()
1218 nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_collect_blocks()
1219 sci->sc_freesegs, ndone, in nilfs_segctor_collect_blocks()
1223 sci->sc_stage.flags |= NILFS_CF_SUFREED; in nilfs_segctor_collect_blocks()
1225 err = nilfs_segctor_scan_file(sci, nilfs->ns_sufile, in nilfs_segctor_collect_blocks()
1229 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1233 err = nilfs_segctor_scan_file(sci, nilfs->ns_dat, in nilfs_segctor_collect_blocks()
1238 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1241 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1246 err = nilfs_segctor_add_super_root(sci); in nilfs_segctor_collect_blocks()
1251 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND; in nilfs_segctor_collect_blocks()
1252 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1256 sci->sc_curseg->sb_sum.flags |= NILFS_SS_SYNDT; in nilfs_segctor_collect_blocks()
1257 ii = sci->sc_dsync_inode; in nilfs_segctor_collect_blocks()
1258 if (!test_bit(NILFS_I_BUSY, &ii->i_state)) in nilfs_segctor_collect_blocks()
1261 err = nilfs_segctor_scan_file_dsync(sci, &ii->vfs_inode); in nilfs_segctor_collect_blocks()
1264 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND; in nilfs_segctor_collect_blocks()
1265 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1278 * nilfs_segctor_begin_construction - setup segment buffer to make a new log
1279 * @sci: nilfs_sc_info
1282 static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci, in nilfs_segctor_begin_construction() argument
1289 segbuf = nilfs_segbuf_new(sci->sc_super); in nilfs_segctor_begin_construction()
1291 return -ENOMEM; in nilfs_segctor_begin_construction()
1293 if (list_empty(&sci->sc_write_logs)) { in nilfs_segctor_begin_construction()
1294 nilfs_segbuf_map(segbuf, nilfs->ns_segnum, in nilfs_segctor_begin_construction()
1295 nilfs->ns_pseg_offset, nilfs); in nilfs_segctor_begin_construction()
1296 if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { in nilfs_segctor_begin_construction()
1298 nilfs_segbuf_map(segbuf, nilfs->ns_segnum, 0, nilfs); in nilfs_segctor_begin_construction()
1301 segbuf->sb_sum.seg_seq = nilfs->ns_seg_seq; in nilfs_segctor_begin_construction()
1302 nextnum = nilfs->ns_nextnum; in nilfs_segctor_begin_construction()
1304 if (nilfs->ns_segnum == nilfs->ns_nextnum) in nilfs_segctor_begin_construction()
1309 prev = NILFS_LAST_SEGBUF(&sci->sc_write_logs); in nilfs_segctor_begin_construction()
1311 segbuf->sb_sum.seg_seq = prev->sb_sum.seg_seq; in nilfs_segctor_begin_construction()
1312 nextnum = prev->sb_nextnum; in nilfs_segctor_begin_construction()
1314 if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { in nilfs_segctor_begin_construction()
1315 nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); in nilfs_segctor_begin_construction()
1316 segbuf->sb_sum.seg_seq++; in nilfs_segctor_begin_construction()
1321 err = nilfs_sufile_mark_dirty(nilfs->ns_sufile, segbuf->sb_segnum); in nilfs_segctor_begin_construction()
1326 err = nilfs_sufile_alloc(nilfs->ns_sufile, &nextnum); in nilfs_segctor_begin_construction()
1332 BUG_ON(!list_empty(&sci->sc_segbufs)); in nilfs_segctor_begin_construction()
1333 list_add_tail(&segbuf->sb_list, &sci->sc_segbufs); in nilfs_segctor_begin_construction()
1334 sci->sc_segbuf_nblocks = segbuf->sb_rest_blocks; in nilfs_segctor_begin_construction()
1342 static int nilfs_segctor_extend_segments(struct nilfs_sc_info *sci, in nilfs_segctor_extend_segments() argument
1346 struct inode *sufile = nilfs->ns_sufile; in nilfs_segctor_extend_segments()
1351 prev = NILFS_LAST_SEGBUF(&sci->sc_segbufs); in nilfs_segctor_extend_segments()
1358 err = nilfs_sufile_mark_dirty(sufile, prev->sb_nextnum); in nilfs_segctor_extend_segments()
1364 err = -ENOMEM; in nilfs_segctor_extend_segments()
1365 segbuf = nilfs_segbuf_new(sci->sc_super); in nilfs_segctor_extend_segments()
1369 /* map this buffer to region of segment on-disk */ in nilfs_segctor_extend_segments()
1370 nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); in nilfs_segctor_extend_segments()
1371 sci->sc_segbuf_nblocks += segbuf->sb_rest_blocks; in nilfs_segctor_extend_segments()
1378 segbuf->sb_sum.seg_seq = prev->sb_sum.seg_seq + 1; in nilfs_segctor_extend_segments()
1381 list_add_tail(&segbuf->sb_list, &list); in nilfs_segctor_extend_segments()
1384 list_splice_tail(&list, &sci->sc_segbufs); in nilfs_segctor_extend_segments()
1391 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_segctor_extend_segments()
1402 struct inode *sufile = nilfs->ns_sufile; in nilfs_free_incomplete_logs()
1406 if (nilfs->ns_nextnum != segbuf->sb_nextnum) { in nilfs_free_incomplete_logs()
1407 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_free_incomplete_logs()
1410 if (atomic_read(&segbuf->sb_err)) { in nilfs_free_incomplete_logs()
1412 if (segbuf->sb_pseg_start != segbuf->sb_fseg_start) in nilfs_free_incomplete_logs()
1417 nilfs_terminate_segment(nilfs, segbuf->sb_fseg_start, in nilfs_free_incomplete_logs()
1418 segbuf->sb_fseg_end); in nilfs_free_incomplete_logs()
1425 if (prev->sb_nextnum != segbuf->sb_nextnum) { in nilfs_free_incomplete_logs()
1426 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_free_incomplete_logs()
1429 if (atomic_read(&segbuf->sb_err) && in nilfs_free_incomplete_logs()
1430 segbuf->sb_segnum != nilfs->ns_nextnum) in nilfs_free_incomplete_logs()
1432 nilfs_sufile_set_error(sufile, segbuf->sb_segnum); in nilfs_free_incomplete_logs()
1437 static void nilfs_segctor_update_segusage(struct nilfs_sc_info *sci, in nilfs_segctor_update_segusage() argument
1444 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_update_segusage()
1445 live_blocks = segbuf->sb_sum.nblocks + in nilfs_segctor_update_segusage()
1446 (segbuf->sb_pseg_start - segbuf->sb_fseg_start); in nilfs_segctor_update_segusage()
1447 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_segctor_update_segusage()
1449 sci->sc_seg_ctime); in nilfs_segctor_update_segusage()
1460 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_cancel_segusage()
1461 segbuf->sb_pseg_start - in nilfs_cancel_segusage()
1462 segbuf->sb_fseg_start, 0); in nilfs_cancel_segusage()
1466 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_cancel_segusage()
1472 static void nilfs_segctor_truncate_segments(struct nilfs_sc_info *sci, in nilfs_segctor_truncate_segments() argument
1479 list_for_each_entry_continue(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_truncate_segments()
1480 sci->sc_segbuf_nblocks -= segbuf->sb_rest_blocks; in nilfs_segctor_truncate_segments()
1481 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_segctor_truncate_segments()
1484 nilfs_truncate_logs(&sci->sc_segbufs, last); in nilfs_segctor_truncate_segments()
1488 static int nilfs_segctor_collect(struct nilfs_sc_info *sci, in nilfs_segctor_collect() argument
1491 struct nilfs_cstage prev_stage = sci->sc_stage; in nilfs_segctor_collect()
1496 sci->sc_nblk_this_inc = 0; in nilfs_segctor_collect()
1497 sci->sc_curseg = NILFS_FIRST_SEGBUF(&sci->sc_segbufs); in nilfs_segctor_collect()
1499 err = nilfs_segctor_reset_segment_buffer(sci); in nilfs_segctor_collect()
1503 err = nilfs_segctor_collect_blocks(sci, mode); in nilfs_segctor_collect()
1504 sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks; in nilfs_segctor_collect()
1508 if (unlikely(err != -E2BIG)) in nilfs_segctor_collect()
1513 nilfs_sc_cstage_get(sci) < NILFS_ST_CPFILE) in nilfs_segctor_collect()
1516 nilfs_clear_logs(&sci->sc_segbufs); in nilfs_segctor_collect()
1518 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { in nilfs_segctor_collect()
1519 err = nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_collect()
1520 sci->sc_freesegs, in nilfs_segctor_collect()
1521 sci->sc_nfreesegs, in nilfs_segctor_collect()
1524 sci->sc_stage.flags &= ~NILFS_CF_SUFREED; in nilfs_segctor_collect()
1527 err = nilfs_segctor_extend_segments(sci, nilfs, nadd); in nilfs_segctor_collect()
1532 sci->sc_stage = prev_stage; in nilfs_segctor_collect()
1534 nilfs_segctor_truncate_segments(sci, sci->sc_curseg, nilfs->ns_sufile); in nilfs_segctor_collect()
1544 BUG_ON(!list_empty(&new_bh->b_assoc_buffers)); in nilfs_list_replace_buffer()
1546 list_replace_init(&old_bh->b_assoc_buffers, &new_bh->b_assoc_buffers); in nilfs_list_replace_buffer()
1551 nilfs_segctor_update_payload_blocknr(struct nilfs_sc_info *sci, in nilfs_segctor_update_payload_blocknr() argument
1557 unsigned long nfinfo = segbuf->sb_sum.nfinfo; in nilfs_segctor_update_payload_blocknr()
1570 blocknr = segbuf->sb_pseg_start + segbuf->sb_sum.nsumblk; in nilfs_segctor_update_payload_blocknr()
1571 ssp.bh = NILFS_SEGBUF_FIRST_BH(&segbuf->sb_segsum_buffers); in nilfs_segctor_update_payload_blocknr()
1574 list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) { in nilfs_segctor_update_payload_blocknr()
1575 if (bh == segbuf->sb_super_root) in nilfs_segctor_update_payload_blocknr()
1579 sci, &ssp, sizeof(*finfo)); in nilfs_segctor_update_payload_blocknr()
1580 ino = le64_to_cpu(finfo->fi_ino); in nilfs_segctor_update_payload_blocknr()
1581 nblocks = le32_to_cpu(finfo->fi_nblocks); in nilfs_segctor_update_payload_blocknr()
1582 ndatablk = le32_to_cpu(finfo->fi_ndatablk); in nilfs_segctor_update_payload_blocknr()
1584 inode = bh->b_page->mapping->host; in nilfs_segctor_update_payload_blocknr()
1595 err = nilfs_bmap_assign(NILFS_I(inode)->i_bmap, &bh, blocknr, in nilfs_segctor_update_payload_blocknr()
1604 sc_op->write_data_binfo(sci, &ssp, &binfo); in nilfs_segctor_update_payload_blocknr()
1606 sc_op->write_node_binfo(sci, &ssp, &binfo); in nilfs_segctor_update_payload_blocknr()
1609 if (--nblocks == 0) { in nilfs_segctor_update_payload_blocknr()
1611 if (--nfinfo == 0) in nilfs_segctor_update_payload_blocknr()
1614 ndatablk--; in nilfs_segctor_update_payload_blocknr()
1623 static int nilfs_segctor_assign(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_assign() argument
1628 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_assign()
1629 err = nilfs_segctor_update_payload_blocknr(sci, segbuf, mode); in nilfs_segctor_assign()
1641 * For split b-tree node pages, this function may be called in nilfs_begin_page_io()
1652 static void nilfs_segctor_prepare_write(struct nilfs_sc_info *sci) in nilfs_segctor_prepare_write() argument
1657 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_prepare_write()
1660 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_segctor_prepare_write()
1662 if (bh->b_page != bd_page) { in nilfs_segctor_prepare_write()
1669 bd_page = bh->b_page; in nilfs_segctor_prepare_write()
1673 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_segctor_prepare_write()
1676 if (bh == segbuf->sb_super_root) { in nilfs_segctor_prepare_write()
1677 if (bh->b_page != bd_page) { in nilfs_segctor_prepare_write()
1682 bd_page = bh->b_page; in nilfs_segctor_prepare_write()
1686 if (bh->b_page != fs_page) { in nilfs_segctor_prepare_write()
1688 fs_page = bh->b_page; in nilfs_segctor_prepare_write()
1701 static int nilfs_segctor_write(struct nilfs_sc_info *sci, in nilfs_segctor_write() argument
1706 ret = nilfs_write_logs(&sci->sc_segbufs, nilfs); in nilfs_segctor_write()
1707 list_splice_tail_init(&sci->sc_segbufs, &sci->sc_write_logs); in nilfs_segctor_write()
1718 * For b-tree node pages, this function may be called twice in nilfs_end_page_io()
1723 * For pages holding split b-tree node buffers, dirty in nilfs_end_page_io()
1759 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_abort_logs()
1761 if (bh->b_page != bd_page) { in nilfs_abort_logs()
1764 bd_page = bh->b_page; in nilfs_abort_logs()
1768 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_abort_logs()
1771 if (bh == segbuf->sb_super_root) { in nilfs_abort_logs()
1772 if (bh->b_page != bd_page) { in nilfs_abort_logs()
1774 bd_page = bh->b_page; in nilfs_abort_logs()
1778 if (bh->b_page != fs_page) { in nilfs_abort_logs()
1780 fs_page = bh->b_page; in nilfs_abort_logs()
1790 static void nilfs_segctor_abort_construction(struct nilfs_sc_info *sci, in nilfs_segctor_abort_construction() argument
1796 list_splice_tail_init(&sci->sc_write_logs, &logs); in nilfs_segctor_abort_construction()
1800 list_splice_tail_init(&sci->sc_segbufs, &logs); in nilfs_segctor_abort_construction()
1801 nilfs_cancel_segusage(&logs, nilfs->ns_sufile); in nilfs_segctor_abort_construction()
1804 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { in nilfs_segctor_abort_construction()
1805 ret = nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_abort_construction()
1806 sci->sc_freesegs, in nilfs_segctor_abort_construction()
1807 sci->sc_nfreesegs, in nilfs_segctor_abort_construction()
1818 nilfs->ns_segnum = segbuf->sb_segnum; in nilfs_set_next_segment()
1819 nilfs->ns_nextnum = segbuf->sb_nextnum; in nilfs_set_next_segment()
1820 nilfs->ns_pseg_offset = segbuf->sb_pseg_start - segbuf->sb_fseg_start in nilfs_set_next_segment()
1821 + segbuf->sb_sum.nblocks; in nilfs_set_next_segment()
1822 nilfs->ns_seg_seq = segbuf->sb_sum.seg_seq; in nilfs_set_next_segment()
1823 nilfs->ns_ctime = segbuf->sb_sum.ctime; in nilfs_set_next_segment()
1826 static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) in nilfs_segctor_complete_write() argument
1830 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_complete_write()
1833 list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) { in nilfs_segctor_complete_write()
1836 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_segctor_complete_write()
1840 if (bh->b_page != bd_page) { in nilfs_segctor_complete_write()
1843 bd_page = bh->b_page; in nilfs_segctor_complete_write()
1850 * identifiable by the discontinuity of bh->b_page in nilfs_segctor_complete_write()
1853 * For B-tree node blocks, however, this assumption is not in nilfs_segctor_complete_write()
1854 * guaranteed. The cleanup code of B-tree node pages needs in nilfs_segctor_complete_write()
1857 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_segctor_complete_write()
1865 set_mask_bits(&bh->b_state, clear_bits, set_bits); in nilfs_segctor_complete_write()
1866 if (bh == segbuf->sb_super_root) { in nilfs_segctor_complete_write()
1867 if (bh->b_page != bd_page) { in nilfs_segctor_complete_write()
1869 bd_page = bh->b_page; in nilfs_segctor_complete_write()
1874 if (bh->b_page != fs_page) { in nilfs_segctor_complete_write()
1876 fs_page = bh->b_page; in nilfs_segctor_complete_write()
1881 if (segbuf->sb_sum.flags & NILFS_SS_LOGBGN) { in nilfs_segctor_complete_write()
1882 set_bit(NILFS_SC_UNCLOSED, &sci->sc_flags); in nilfs_segctor_complete_write()
1883 sci->sc_lseg_stime = jiffies; in nilfs_segctor_complete_write()
1885 if (segbuf->sb_sum.flags & NILFS_SS_LOGEND) in nilfs_segctor_complete_write()
1886 clear_bit(NILFS_SC_UNCLOSED, &sci->sc_flags); in nilfs_segctor_complete_write()
1898 nilfs_drop_collected_inodes(&sci->sc_dirty_files); in nilfs_segctor_complete_write()
1901 nilfs_drop_collected_inodes(&sci->sc_gc_inodes); in nilfs_segctor_complete_write()
1903 nilfs->ns_nongc_ctime = sci->sc_seg_ctime; in nilfs_segctor_complete_write()
1905 sci->sc_nblk_inc += sci->sc_nblk_this_inc; in nilfs_segctor_complete_write()
1907 segbuf = NILFS_LAST_SEGBUF(&sci->sc_write_logs); in nilfs_segctor_complete_write()
1911 nilfs->ns_flushed_device = 0; in nilfs_segctor_complete_write()
1912 nilfs_set_last_segment(nilfs, segbuf->sb_pseg_start, in nilfs_segctor_complete_write()
1913 segbuf->sb_sum.seg_seq, nilfs->ns_cno++); in nilfs_segctor_complete_write()
1915 clear_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); in nilfs_segctor_complete_write()
1916 clear_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_complete_write()
1917 set_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); in nilfs_segctor_complete_write()
1918 nilfs_segctor_clear_metadata_dirty(sci); in nilfs_segctor_complete_write()
1920 clear_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); in nilfs_segctor_complete_write()
1923 static int nilfs_segctor_wait(struct nilfs_sc_info *sci) in nilfs_segctor_wait() argument
1927 ret = nilfs_wait_on_logs(&sci->sc_write_logs); in nilfs_segctor_wait()
1929 nilfs_segctor_complete_write(sci); in nilfs_segctor_wait()
1930 nilfs_destroy_logs(&sci->sc_write_logs); in nilfs_segctor_wait()
1935 static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci, in nilfs_segctor_collect_dirty_files() argument
1939 struct inode *ifile = sci->sc_root->ifile; in nilfs_segctor_collect_dirty_files()
1941 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1943 list_for_each_entry_safe(ii, n, &nilfs->ns_dirty_files, i_dirty) { in nilfs_segctor_collect_dirty_files()
1944 if (!ii->i_bh) { in nilfs_segctor_collect_dirty_files()
1948 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1950 ifile, ii->vfs_inode.i_ino, &ibh); in nilfs_segctor_collect_dirty_files()
1952 nilfs_warn(sci->sc_super, in nilfs_segctor_collect_dirty_files()
1954 err, ii->vfs_inode.i_ino); in nilfs_segctor_collect_dirty_files()
1957 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1958 if (likely(!ii->i_bh)) in nilfs_segctor_collect_dirty_files()
1959 ii->i_bh = ibh; in nilfs_segctor_collect_dirty_files()
1966 mark_buffer_dirty(ii->i_bh); in nilfs_segctor_collect_dirty_files()
1969 clear_bit(NILFS_I_QUEUED, &ii->i_state); in nilfs_segctor_collect_dirty_files()
1970 set_bit(NILFS_I_BUSY, &ii->i_state); in nilfs_segctor_collect_dirty_files()
1971 list_move_tail(&ii->i_dirty, &sci->sc_dirty_files); in nilfs_segctor_collect_dirty_files()
1973 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1978 static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci, in nilfs_segctor_drop_written_files() argument
1982 int during_mount = !(sci->sc_super->s_flags & SB_ACTIVE); in nilfs_segctor_drop_written_files()
1985 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
1986 list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) { in nilfs_segctor_drop_written_files()
1987 if (!test_and_clear_bit(NILFS_I_UPDATED, &ii->i_state) || in nilfs_segctor_drop_written_files()
1988 test_bit(NILFS_I_DIRTY, &ii->i_state)) in nilfs_segctor_drop_written_files()
1991 clear_bit(NILFS_I_BUSY, &ii->i_state); in nilfs_segctor_drop_written_files()
1992 brelse(ii->i_bh); in nilfs_segctor_drop_written_files()
1993 ii->i_bh = NULL; in nilfs_segctor_drop_written_files()
1994 list_del_init(&ii->i_dirty); in nilfs_segctor_drop_written_files()
1995 if (!ii->vfs_inode.i_nlink || during_mount) { in nilfs_segctor_drop_written_files()
2000 list_add_tail(&ii->i_dirty, &sci->sc_iput_queue); in nilfs_segctor_drop_written_files()
2003 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2004 iput(&ii->vfs_inode); in nilfs_segctor_drop_written_files()
2005 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2008 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2011 schedule_work(&sci->sc_iput_work); in nilfs_segctor_drop_written_files()
2017 static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_do_construct() argument
2019 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_do_construct()
2022 nilfs_sc_cstage_set(sci, NILFS_ST_INIT); in nilfs_segctor_do_construct()
2023 sci->sc_cno = nilfs->ns_cno; in nilfs_segctor_do_construct()
2025 err = nilfs_segctor_collect_dirty_files(sci, nilfs); in nilfs_segctor_do_construct()
2029 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) in nilfs_segctor_do_construct()
2030 set_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_do_construct()
2032 if (nilfs_segctor_clean(sci)) in nilfs_segctor_do_construct()
2036 sci->sc_stage.flags &= ~NILFS_CF_HISTORY_MASK; in nilfs_segctor_do_construct()
2038 err = nilfs_segctor_begin_construction(sci, nilfs); in nilfs_segctor_do_construct()
2043 sci->sc_seg_ctime = ktime_get_real_seconds(); in nilfs_segctor_do_construct()
2045 err = nilfs_segctor_collect(sci, nilfs, mode); in nilfs_segctor_do_construct()
2050 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE && in nilfs_segctor_do_construct()
2051 nilfs_segbuf_empty(sci->sc_curseg)) { in nilfs_segctor_do_construct()
2052 nilfs_segctor_abort_construction(sci, nilfs, 1); in nilfs_segctor_do_construct()
2056 err = nilfs_segctor_assign(sci, mode); in nilfs_segctor_do_construct()
2060 if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) in nilfs_segctor_do_construct()
2061 nilfs_segctor_fill_in_file_bmap(sci); in nilfs_segctor_do_construct()
2064 nilfs_sc_cstage_get(sci) >= NILFS_ST_CPFILE) { in nilfs_segctor_do_construct()
2065 err = nilfs_segctor_fill_in_checkpoint(sci); in nilfs_segctor_do_construct()
2069 nilfs_segctor_fill_in_super_root(sci, nilfs); in nilfs_segctor_do_construct()
2071 nilfs_segctor_update_segusage(sci, nilfs->ns_sufile); in nilfs_segctor_do_construct()
2074 nilfs_segctor_prepare_write(sci); in nilfs_segctor_do_construct()
2076 nilfs_add_checksums_on_logs(&sci->sc_segbufs, in nilfs_segctor_do_construct()
2077 nilfs->ns_crc_seed); in nilfs_segctor_do_construct()
2079 err = nilfs_segctor_write(sci, nilfs); in nilfs_segctor_do_construct()
2083 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE || in nilfs_segctor_do_construct()
2084 nilfs->ns_blocksize_bits != PAGE_SHIFT) { in nilfs_segctor_do_construct()
2092 err = nilfs_segctor_wait(sci); in nilfs_segctor_do_construct()
2096 } while (nilfs_sc_cstage_get(sci) != NILFS_ST_DONE); in nilfs_segctor_do_construct()
2099 nilfs_segctor_drop_written_files(sci, nilfs); in nilfs_segctor_do_construct()
2103 if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) in nilfs_segctor_do_construct()
2104 nilfs_redirty_inodes(&sci->sc_dirty_files); in nilfs_segctor_do_construct()
2108 nilfs_redirty_inodes(&sci->sc_gc_inodes); in nilfs_segctor_do_construct()
2109 nilfs_segctor_abort_construction(sci, nilfs, err); in nilfs_segctor_do_construct()
2114 * nilfs_segctor_start_timer - set timer of background write
2115 * @sci: nilfs_sc_info
2121 static void nilfs_segctor_start_timer(struct nilfs_sc_info *sci) in nilfs_segctor_start_timer() argument
2123 spin_lock(&sci->sc_state_lock); in nilfs_segctor_start_timer()
2124 if (!(sci->sc_state & NILFS_SEGCTOR_COMMIT)) { in nilfs_segctor_start_timer()
2125 sci->sc_timer.expires = jiffies + sci->sc_interval; in nilfs_segctor_start_timer()
2126 add_timer(&sci->sc_timer); in nilfs_segctor_start_timer()
2127 sci->sc_state |= NILFS_SEGCTOR_COMMIT; in nilfs_segctor_start_timer()
2129 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_start_timer()
2132 static void nilfs_segctor_do_flush(struct nilfs_sc_info *sci, int bn) in nilfs_segctor_do_flush() argument
2134 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_flush()
2135 if (!(sci->sc_flush_request & BIT(bn))) { in nilfs_segctor_do_flush()
2136 unsigned long prev_req = sci->sc_flush_request; in nilfs_segctor_do_flush()
2138 sci->sc_flush_request |= BIT(bn); in nilfs_segctor_do_flush()
2140 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_do_flush()
2142 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_flush()
2146 * nilfs_flush_segment - trigger a segment construction for resource control
2152 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_flush_segment()
2153 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_flush_segment() local
2155 if (!sci || nilfs_doing_construction()) in nilfs_flush_segment()
2157 nilfs_segctor_do_flush(sci, NILFS_MDT_INODE(sb, ino) ? ino : 0); in nilfs_flush_segment()
2168 static int nilfs_segctor_sync(struct nilfs_sc_info *sci) in nilfs_segctor_sync() argument
2173 spin_lock(&sci->sc_state_lock); in nilfs_segctor_sync()
2177 wait_req.seq = ++sci->sc_seq_request; in nilfs_segctor_sync()
2178 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_sync()
2181 add_wait_queue(&sci->sc_wait_request, &wait_req.wq); in nilfs_segctor_sync()
2183 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_sync()
2194 err = -ERESTARTSYS; in nilfs_segctor_sync()
2197 finish_wait(&sci->sc_wait_request, &wait_req.wq); in nilfs_segctor_sync()
2201 static void nilfs_segctor_wakeup(struct nilfs_sc_info *sci, int err) in nilfs_segctor_wakeup() argument
2206 spin_lock_irqsave(&sci->sc_wait_request.lock, flags); in nilfs_segctor_wakeup()
2207 list_for_each_entry_safe(wrq, n, &sci->sc_wait_request.head, wq.entry) { in nilfs_segctor_wakeup()
2208 if (!atomic_read(&wrq->done) && in nilfs_segctor_wakeup()
2209 nilfs_cnt32_ge(sci->sc_seq_done, wrq->seq)) { in nilfs_segctor_wakeup()
2210 wrq->err = err; in nilfs_segctor_wakeup()
2211 atomic_set(&wrq->done, 1); in nilfs_segctor_wakeup()
2213 if (atomic_read(&wrq->done)) { in nilfs_segctor_wakeup()
2214 wrq->wq.func(&wrq->wq, in nilfs_segctor_wakeup()
2219 spin_unlock_irqrestore(&sci->sc_wait_request.lock, flags); in nilfs_segctor_wakeup()
2223 * nilfs_construct_segment - construct a logical segment
2229 * %-EROFS - Read only filesystem.
2231 * %-EIO - I/O error
2233 * %-ENOSPC - No space left on device (only in a panic state).
2235 * %-ERESTARTSYS - Interrupted.
2237 * %-ENOMEM - Insufficient memory available.
2241 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_construct_segment()
2242 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_construct_segment() local
2245 if (sb_rdonly(sb) || unlikely(!sci)) in nilfs_construct_segment()
2246 return -EROFS; in nilfs_construct_segment()
2249 BUG_ON((ti = current->journal_info) && ti->ti_magic == NILFS_TI_MAGIC); in nilfs_construct_segment()
2251 return nilfs_segctor_sync(sci); in nilfs_construct_segment()
2255 * nilfs_construct_dsync_segment - construct a data-only logical segment
2264 * %-EROFS - Read only filesystem.
2266 * %-EIO - I/O error
2268 * %-ENOSPC - No space left on device (only in a panic state).
2270 * %-ERESTARTSYS - Interrupted.
2272 * %-ENOMEM - Insufficient memory available.
2277 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_construct_dsync_segment()
2278 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_construct_dsync_segment() local
2283 if (sb_rdonly(sb) || unlikely(!sci)) in nilfs_construct_dsync_segment()
2284 return -EROFS; in nilfs_construct_dsync_segment()
2289 if (test_bit(NILFS_I_INODE_SYNC, &ii->i_state) || in nilfs_construct_dsync_segment()
2291 test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || in nilfs_construct_dsync_segment()
2294 err = nilfs_segctor_sync(sci); in nilfs_construct_dsync_segment()
2298 spin_lock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2299 if (!test_bit(NILFS_I_QUEUED, &ii->i_state) && in nilfs_construct_dsync_segment()
2300 !test_bit(NILFS_I_BUSY, &ii->i_state)) { in nilfs_construct_dsync_segment()
2301 spin_unlock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2305 spin_unlock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2306 sci->sc_dsync_inode = ii; in nilfs_construct_dsync_segment()
2307 sci->sc_dsync_start = start; in nilfs_construct_dsync_segment()
2308 sci->sc_dsync_end = end; in nilfs_construct_dsync_segment()
2310 err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC); in nilfs_construct_dsync_segment()
2312 nilfs->ns_flushed_device = 0; in nilfs_construct_dsync_segment()
2322 * nilfs_segctor_accept - record accepted sequence count of log-write requests
2323 * @sci: segment constructor object
2325 static void nilfs_segctor_accept(struct nilfs_sc_info *sci) in nilfs_segctor_accept() argument
2327 spin_lock(&sci->sc_state_lock); in nilfs_segctor_accept()
2328 sci->sc_seq_accepted = sci->sc_seq_request; in nilfs_segctor_accept()
2329 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_accept()
2330 del_timer_sync(&sci->sc_timer); in nilfs_segctor_accept()
2334 * nilfs_segctor_notify - notify the result of request to caller threads
2335 * @sci: segment constructor object
2339 static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err) in nilfs_segctor_notify() argument
2342 spin_lock(&sci->sc_state_lock); in nilfs_segctor_notify()
2345 sci->sc_state &= ~NILFS_SEGCTOR_COMMIT; in nilfs_segctor_notify()
2346 sci->sc_seq_done = sci->sc_seq_accepted; in nilfs_segctor_notify()
2347 nilfs_segctor_wakeup(sci, err); in nilfs_segctor_notify()
2348 sci->sc_flush_request = 0; in nilfs_segctor_notify()
2351 sci->sc_flush_request &= ~FLUSH_FILE_BIT; in nilfs_segctor_notify()
2353 sci->sc_flush_request &= ~FLUSH_DAT_BIT; in nilfs_segctor_notify()
2355 /* re-enable timer if checkpoint creation was not done */ in nilfs_segctor_notify()
2356 if ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && in nilfs_segctor_notify()
2357 time_before(jiffies, sci->sc_timer.expires)) in nilfs_segctor_notify()
2358 add_timer(&sci->sc_timer); in nilfs_segctor_notify()
2360 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_notify()
2364 * nilfs_segctor_construct - form logs and write them to disk
2365 * @sci: segment constructor object
2368 static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_construct() argument
2370 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_construct()
2374 nilfs_segctor_accept(sci); in nilfs_segctor_construct()
2378 if (!nilfs_segctor_confirm(sci)) in nilfs_segctor_construct()
2379 err = nilfs_segctor_do_construct(sci, mode); in nilfs_segctor_construct()
2383 atomic_set(&nilfs->ns_ndirtyblks, 0); in nilfs_segctor_construct()
2384 if (test_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags) && in nilfs_segctor_construct()
2386 down_write(&nilfs->ns_sem); in nilfs_segctor_construct()
2387 err = -EIO; in nilfs_segctor_construct()
2388 sbp = nilfs_prepare_super(sci->sc_super, in nilfs_segctor_construct()
2392 err = nilfs_commit_super(sci->sc_super, in nilfs_segctor_construct()
2395 up_write(&nilfs->ns_sem); in nilfs_segctor_construct()
2399 nilfs_segctor_notify(sci, mode, err); in nilfs_segctor_construct()
2405 struct nilfs_sc_info *sci = from_timer(sci, t, sc_timer); in nilfs_construction_timeout() local
2407 wake_up_process(sci->sc_timer_task); in nilfs_construction_timeout()
2416 if (!test_bit(NILFS_I_UPDATED, &ii->i_state)) in nilfs_remove_written_gcinodes()
2418 list_del_init(&ii->i_dirty); in nilfs_remove_written_gcinodes()
2419 truncate_inode_pages(&ii->vfs_inode.i_data, 0); in nilfs_remove_written_gcinodes()
2420 nilfs_btnode_cache_clear(ii->i_assoc_inode->i_mapping); in nilfs_remove_written_gcinodes()
2421 iput(&ii->vfs_inode); in nilfs_remove_written_gcinodes()
2428 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_clean_segments()
2429 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_clean_segments() local
2433 if (unlikely(!sci)) in nilfs_clean_segments()
2434 return -EROFS; in nilfs_clean_segments()
2438 err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2444 nilfs_mdt_restore_from_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2448 sci->sc_freesegs = kbufs[4]; in nilfs_clean_segments()
2449 sci->sc_nfreesegs = argv[4].v_nmembs; in nilfs_clean_segments()
2450 list_splice_tail_init(&nilfs->ns_gc_inodes, &sci->sc_gc_inodes); in nilfs_clean_segments()
2453 err = nilfs_segctor_construct(sci, SC_LSEG_SR); in nilfs_clean_segments()
2454 nilfs_remove_written_gcinodes(nilfs, &sci->sc_gc_inodes); in nilfs_clean_segments()
2461 schedule_timeout(sci->sc_interval); in nilfs_clean_segments()
2464 int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs, in nilfs_clean_segments()
2465 sci->sc_nfreesegs); in nilfs_clean_segments()
2475 sci->sc_freesegs = NULL; in nilfs_clean_segments()
2476 sci->sc_nfreesegs = 0; in nilfs_clean_segments()
2477 nilfs_mdt_clear_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2482 static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_thread_construct() argument
2486 nilfs_transaction_lock(sci->sc_super, &ti, 0); in nilfs_segctor_thread_construct()
2487 nilfs_segctor_construct(sci, mode); in nilfs_segctor_thread_construct()
2494 if (test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) in nilfs_segctor_thread_construct()
2495 nilfs_segctor_start_timer(sci); in nilfs_segctor_thread_construct()
2497 nilfs_transaction_unlock(sci->sc_super); in nilfs_segctor_thread_construct()
2500 static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci) in nilfs_segctor_do_immediate_flush() argument
2504 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2505 mode = (sci->sc_flush_request & FLUSH_DAT_BIT) ? in nilfs_segctor_do_immediate_flush()
2507 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2510 nilfs_segctor_do_construct(sci, mode); in nilfs_segctor_do_immediate_flush()
2512 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2513 sci->sc_flush_request &= (mode == SC_FLUSH_FILE) ? in nilfs_segctor_do_immediate_flush()
2515 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2517 clear_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags); in nilfs_segctor_do_immediate_flush()
2520 static int nilfs_segctor_flush_mode(struct nilfs_sc_info *sci) in nilfs_segctor_flush_mode() argument
2522 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || in nilfs_segctor_flush_mode()
2523 time_before(jiffies, sci->sc_lseg_stime + sci->sc_mjcp_freq)) { in nilfs_segctor_flush_mode()
2524 if (!(sci->sc_flush_request & ~FLUSH_FILE_BIT)) in nilfs_segctor_flush_mode()
2526 else if (!(sci->sc_flush_request & ~FLUSH_DAT_BIT)) in nilfs_segctor_flush_mode()
2533 * nilfs_segctor_thread - main loop of the segment constructor thread.
2541 struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg; in nilfs_segctor_thread() local
2542 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_thread()
2545 sci->sc_timer_task = current; in nilfs_segctor_thread()
2548 sci->sc_task = current; in nilfs_segctor_thread()
2549 wake_up(&sci->sc_wait_task); /* for nilfs_segctor_start_thread() */ in nilfs_segctor_thread()
2550 nilfs_info(sci->sc_super, in nilfs_segctor_thread()
2552 sci->sc_interval / HZ, sci->sc_mjcp_freq / HZ); in nilfs_segctor_thread()
2554 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2559 if (sci->sc_state & NILFS_SEGCTOR_QUIT) in nilfs_segctor_thread()
2562 if (timeout || sci->sc_seq_request != sci->sc_seq_done) in nilfs_segctor_thread()
2564 else if (sci->sc_flush_request) in nilfs_segctor_thread()
2565 mode = nilfs_segctor_flush_mode(sci); in nilfs_segctor_thread()
2569 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2570 nilfs_segctor_thread_construct(sci, mode); in nilfs_segctor_thread()
2571 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2577 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2579 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2584 prepare_to_wait(&sci->sc_wait_daemon, &wait, in nilfs_segctor_thread()
2587 if (sci->sc_seq_request != sci->sc_seq_done) in nilfs_segctor_thread()
2589 else if (sci->sc_flush_request) in nilfs_segctor_thread()
2591 else if (sci->sc_state & NILFS_SEGCTOR_COMMIT) in nilfs_segctor_thread()
2593 sci->sc_timer.expires); in nilfs_segctor_thread()
2596 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2598 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2600 finish_wait(&sci->sc_wait_daemon, &wait); in nilfs_segctor_thread()
2601 timeout = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && in nilfs_segctor_thread()
2602 time_after_eq(jiffies, sci->sc_timer.expires)); in nilfs_segctor_thread()
2610 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2613 sci->sc_task = NULL; in nilfs_segctor_thread()
2614 wake_up(&sci->sc_wait_task); /* for nilfs_segctor_kill_thread() */ in nilfs_segctor_thread()
2618 static int nilfs_segctor_start_thread(struct nilfs_sc_info *sci) in nilfs_segctor_start_thread() argument
2622 t = kthread_run(nilfs_segctor_thread, sci, "segctord"); in nilfs_segctor_start_thread()
2626 nilfs_err(sci->sc_super, "error %d creating segctord thread", in nilfs_segctor_start_thread()
2630 wait_event(sci->sc_wait_task, sci->sc_task != NULL); in nilfs_segctor_start_thread()
2634 static void nilfs_segctor_kill_thread(struct nilfs_sc_info *sci) in nilfs_segctor_kill_thread() argument
2635 __acquires(&sci->sc_state_lock) in nilfs_segctor_kill_thread()
2636 __releases(&sci->sc_state_lock) in nilfs_segctor_kill_thread()
2638 sci->sc_state |= NILFS_SEGCTOR_QUIT; in nilfs_segctor_kill_thread()
2640 while (sci->sc_task) { in nilfs_segctor_kill_thread()
2641 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_kill_thread()
2642 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_kill_thread()
2643 wait_event(sci->sc_wait_task, sci->sc_task == NULL); in nilfs_segctor_kill_thread()
2644 spin_lock(&sci->sc_state_lock); in nilfs_segctor_kill_thread()
2649 * Setup & clean-up functions
2654 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_segctor_new()
2655 struct nilfs_sc_info *sci; in nilfs_segctor_new() local
2657 sci = kzalloc(sizeof(*sci), GFP_KERNEL); in nilfs_segctor_new()
2658 if (!sci) in nilfs_segctor_new()
2661 sci->sc_super = sb; in nilfs_segctor_new()
2664 sci->sc_root = root; in nilfs_segctor_new()
2666 init_waitqueue_head(&sci->sc_wait_request); in nilfs_segctor_new()
2667 init_waitqueue_head(&sci->sc_wait_daemon); in nilfs_segctor_new()
2668 init_waitqueue_head(&sci->sc_wait_task); in nilfs_segctor_new()
2669 spin_lock_init(&sci->sc_state_lock); in nilfs_segctor_new()
2670 INIT_LIST_HEAD(&sci->sc_dirty_files); in nilfs_segctor_new()
2671 INIT_LIST_HEAD(&sci->sc_segbufs); in nilfs_segctor_new()
2672 INIT_LIST_HEAD(&sci->sc_write_logs); in nilfs_segctor_new()
2673 INIT_LIST_HEAD(&sci->sc_gc_inodes); in nilfs_segctor_new()
2674 INIT_LIST_HEAD(&sci->sc_iput_queue); in nilfs_segctor_new()
2675 INIT_WORK(&sci->sc_iput_work, nilfs_iput_work_func); in nilfs_segctor_new()
2676 timer_setup(&sci->sc_timer, nilfs_construction_timeout, 0); in nilfs_segctor_new()
2678 sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT; in nilfs_segctor_new()
2679 sci->sc_mjcp_freq = HZ * NILFS_SC_DEFAULT_SR_FREQ; in nilfs_segctor_new()
2680 sci->sc_watermark = NILFS_SC_DEFAULT_WATERMARK; in nilfs_segctor_new()
2682 if (nilfs->ns_interval) in nilfs_segctor_new()
2683 sci->sc_interval = HZ * nilfs->ns_interval; in nilfs_segctor_new()
2684 if (nilfs->ns_watermark) in nilfs_segctor_new()
2685 sci->sc_watermark = nilfs->ns_watermark; in nilfs_segctor_new()
2686 return sci; in nilfs_segctor_new()
2689 static void nilfs_segctor_write_out(struct nilfs_sc_info *sci) in nilfs_segctor_write_out() argument
2700 nilfs_transaction_lock(sci->sc_super, &ti, 0); in nilfs_segctor_write_out()
2701 ret = nilfs_segctor_construct(sci, SC_LSEG_SR); in nilfs_segctor_write_out()
2702 nilfs_transaction_unlock(sci->sc_super); in nilfs_segctor_write_out()
2704 flush_work(&sci->sc_iput_work); in nilfs_segctor_write_out()
2706 } while (ret && retrycount-- > 0); in nilfs_segctor_write_out()
2710 * nilfs_segctor_destroy - destroy the segment constructor.
2711 * @sci: nilfs_sc_info
2717 static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) in nilfs_segctor_destroy() argument
2719 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_destroy()
2722 up_write(&nilfs->ns_segctor_sem); in nilfs_segctor_destroy()
2724 spin_lock(&sci->sc_state_lock); in nilfs_segctor_destroy()
2725 nilfs_segctor_kill_thread(sci); in nilfs_segctor_destroy()
2726 flag = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) || sci->sc_flush_request in nilfs_segctor_destroy()
2727 || sci->sc_seq_request != sci->sc_seq_done); in nilfs_segctor_destroy()
2728 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_destroy()
2730 if (flush_work(&sci->sc_iput_work)) in nilfs_segctor_destroy()
2733 if (flag || !nilfs_segctor_confirm(sci)) in nilfs_segctor_destroy()
2734 nilfs_segctor_write_out(sci); in nilfs_segctor_destroy()
2736 if (!list_empty(&sci->sc_dirty_files)) { in nilfs_segctor_destroy()
2737 nilfs_warn(sci->sc_super, in nilfs_segctor_destroy()
2739 nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1); in nilfs_segctor_destroy()
2742 if (!list_empty(&sci->sc_iput_queue)) { in nilfs_segctor_destroy()
2743 nilfs_warn(sci->sc_super, in nilfs_segctor_destroy()
2745 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 1); in nilfs_segctor_destroy()
2748 WARN_ON(!list_empty(&sci->sc_segbufs)); in nilfs_segctor_destroy()
2749 WARN_ON(!list_empty(&sci->sc_write_logs)); in nilfs_segctor_destroy()
2751 nilfs_put_root(sci->sc_root); in nilfs_segctor_destroy()
2753 down_write(&nilfs->ns_segctor_sem); in nilfs_segctor_destroy()
2755 del_timer_sync(&sci->sc_timer); in nilfs_segctor_destroy()
2756 kfree(sci); in nilfs_segctor_destroy()
2760 * nilfs_attach_log_writer - attach log writer
2770 * %-ENOMEM - Insufficient memory available.
2774 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_attach_log_writer()
2777 if (nilfs->ns_writer) { in nilfs_attach_log_writer()
2779 * This happens if the filesystem is made read-only by in nilfs_attach_log_writer()
2787 nilfs->ns_writer = nilfs_segctor_new(sb, root); in nilfs_attach_log_writer()
2788 if (!nilfs->ns_writer) in nilfs_attach_log_writer()
2789 return -ENOMEM; in nilfs_attach_log_writer()
2791 inode_attach_wb(nilfs->ns_bdev->bd_inode, NULL); in nilfs_attach_log_writer()
2793 err = nilfs_segctor_start_thread(nilfs->ns_writer); in nilfs_attach_log_writer()
2801 * nilfs_detach_log_writer - destroy log writer
2809 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_detach_log_writer()
2812 down_write(&nilfs->ns_segctor_sem); in nilfs_detach_log_writer()
2813 if (nilfs->ns_writer) { in nilfs_detach_log_writer()
2814 nilfs_segctor_destroy(nilfs->ns_writer); in nilfs_detach_log_writer()
2815 nilfs->ns_writer = NULL; in nilfs_detach_log_writer()
2819 spin_lock(&nilfs->ns_inode_lock); in nilfs_detach_log_writer()
2820 if (!list_empty(&nilfs->ns_dirty_files)) { in nilfs_detach_log_writer()
2821 list_splice_init(&nilfs->ns_dirty_files, &garbage_list); in nilfs_detach_log_writer()
2825 spin_unlock(&nilfs->ns_inode_lock); in nilfs_detach_log_writer()
2826 up_write(&nilfs->ns_segctor_sem); in nilfs_detach_log_writer()