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 (!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 address_space *mapping = &ii->i_btnode_cache; in nilfs_lookup_dirty_node_buffers()
757 list_add_tail(&bh->b_assoc_buffers, in nilfs_lookup_dirty_node_buffers()
760 bh = bh->b_this_page; in nilfs_lookup_dirty_node_buffers()
776 spin_lock(&nilfs->ns_inode_lock); in nilfs_dispose_list()
778 list_del_init(&ii->i_dirty); in nilfs_dispose_list()
780 if (unlikely(ii->i_bh)) { in nilfs_dispose_list()
781 brelse(ii->i_bh); in nilfs_dispose_list()
782 ii->i_bh = NULL; in nilfs_dispose_list()
784 } else if (test_bit(NILFS_I_DIRTY, &ii->i_state)) { in nilfs_dispose_list()
785 set_bit(NILFS_I_QUEUED, &ii->i_state); in nilfs_dispose_list()
786 list_add_tail(&ii->i_dirty, in nilfs_dispose_list()
787 &nilfs->ns_dirty_files); in nilfs_dispose_list()
794 spin_unlock(&nilfs->ns_inode_lock); in nilfs_dispose_list()
796 for (pii = ivec; nv > 0; pii++, nv--) in nilfs_dispose_list()
797 iput(&(*pii)->vfs_inode); in nilfs_dispose_list()
803 struct nilfs_sc_info *sci = container_of(work, struct nilfs_sc_info, in nilfs_iput_work_func() local
805 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_iput_work_func()
807 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 0); in nilfs_iput_work_func()
815 if (nilfs_mdt_fetch_dirty(root->ifile)) in nilfs_test_metadata_dirty()
817 if (nilfs_mdt_fetch_dirty(nilfs->ns_cpfile)) in nilfs_test_metadata_dirty()
819 if (nilfs_mdt_fetch_dirty(nilfs->ns_sufile)) in nilfs_test_metadata_dirty()
821 if ((ret || nilfs_doing_gc()) && nilfs_mdt_fetch_dirty(nilfs->ns_dat)) in nilfs_test_metadata_dirty()
826 static int nilfs_segctor_clean(struct nilfs_sc_info *sci) in nilfs_segctor_clean() argument
828 return list_empty(&sci->sc_dirty_files) && in nilfs_segctor_clean()
829 !test_bit(NILFS_SC_DIRTY, &sci->sc_flags) && in nilfs_segctor_clean()
830 sci->sc_nfreesegs == 0 && in nilfs_segctor_clean()
831 (!nilfs_doing_gc() || list_empty(&sci->sc_gc_inodes)); in nilfs_segctor_clean()
834 static int nilfs_segctor_confirm(struct nilfs_sc_info *sci) in nilfs_segctor_confirm() argument
836 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_confirm()
839 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) in nilfs_segctor_confirm()
840 set_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_confirm()
842 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_confirm()
843 if (list_empty(&nilfs->ns_dirty_files) && nilfs_segctor_clean(sci)) in nilfs_segctor_confirm()
846 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_confirm()
850 static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci) in nilfs_segctor_clear_metadata_dirty() argument
852 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_clear_metadata_dirty()
854 nilfs_mdt_clear_dirty(sci->sc_root->ifile); in nilfs_segctor_clear_metadata_dirty()
855 nilfs_mdt_clear_dirty(nilfs->ns_cpfile); in nilfs_segctor_clear_metadata_dirty()
856 nilfs_mdt_clear_dirty(nilfs->ns_sufile); in nilfs_segctor_clear_metadata_dirty()
857 nilfs_mdt_clear_dirty(nilfs->ns_dat); in nilfs_segctor_clear_metadata_dirty()
860 static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci) in nilfs_segctor_create_checkpoint() argument
862 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_create_checkpoint()
868 err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, 1, in nilfs_segctor_create_checkpoint()
877 nilfs_mdt_mark_dirty(nilfs->ns_cpfile); in nilfs_segctor_create_checkpoint()
879 nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); in nilfs_segctor_create_checkpoint()
881 WARN_ON(err == -EINVAL || err == -ENOENT); 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 WARN_ON(err == -EINVAL || err == -ENOENT); in nilfs_segctor_fill_in_checkpoint()
899 raw_cp->cp_snapshot_list.ssl_next = 0; in nilfs_segctor_fill_in_checkpoint()
900 raw_cp->cp_snapshot_list.ssl_prev = 0; in nilfs_segctor_fill_in_checkpoint()
901 raw_cp->cp_inodes_count = in nilfs_segctor_fill_in_checkpoint()
902 cpu_to_le64(atomic64_read(&sci->sc_root->inodes_count)); in nilfs_segctor_fill_in_checkpoint()
903 raw_cp->cp_blocks_count = in nilfs_segctor_fill_in_checkpoint()
904 cpu_to_le64(atomic64_read(&sci->sc_root->blocks_count)); in nilfs_segctor_fill_in_checkpoint()
905 raw_cp->cp_nblk_inc = in nilfs_segctor_fill_in_checkpoint()
906 cpu_to_le64(sci->sc_nblk_inc + sci->sc_nblk_this_inc); in nilfs_segctor_fill_in_checkpoint()
907 raw_cp->cp_create = cpu_to_le64(sci->sc_seg_ctime); in nilfs_segctor_fill_in_checkpoint()
908 raw_cp->cp_cno = cpu_to_le64(nilfs->ns_cno); in nilfs_segctor_fill_in_checkpoint()
910 if (test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags)) in nilfs_segctor_fill_in_checkpoint()
915 nilfs_write_inode_common(sci->sc_root->ifile, in nilfs_segctor_fill_in_checkpoint()
916 &raw_cp->cp_ifile_inode, 1); in nilfs_segctor_fill_in_checkpoint()
917 nilfs_cpfile_put_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); in nilfs_segctor_fill_in_checkpoint()
931 if (test_bit(NILFS_I_BMAP, &ii->i_state)) { in nilfs_fill_in_file_bmap()
932 ibh = ii->i_bh; in nilfs_fill_in_file_bmap()
934 raw_inode = nilfs_ifile_map_inode(ifile, ii->vfs_inode.i_ino, in nilfs_fill_in_file_bmap()
936 nilfs_bmap_write(ii->i_bmap, raw_inode); in nilfs_fill_in_file_bmap()
937 nilfs_ifile_unmap_inode(ifile, ii->vfs_inode.i_ino, ibh); in nilfs_fill_in_file_bmap()
941 static void nilfs_segctor_fill_in_file_bmap(struct nilfs_sc_info *sci) in nilfs_segctor_fill_in_file_bmap() argument
945 list_for_each_entry(ii, &sci->sc_dirty_files, i_dirty) { in nilfs_segctor_fill_in_file_bmap()
946 nilfs_fill_in_file_bmap(sci->sc_root->ifile, ii); in nilfs_segctor_fill_in_file_bmap()
947 set_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_segctor_fill_in_file_bmap()
951 static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci, in nilfs_segctor_fill_in_super_root() argument
958 bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root; in nilfs_segctor_fill_in_super_root()
959 raw_sr = (struct nilfs_super_root *)bh_sr->b_data; in nilfs_segctor_fill_in_super_root()
960 isz = nilfs->ns_inode_size; in nilfs_segctor_fill_in_super_root()
963 raw_sr->sr_bytes = cpu_to_le16(srsz); in nilfs_segctor_fill_in_super_root()
964 raw_sr->sr_nongc_ctime in nilfs_segctor_fill_in_super_root()
966 nilfs->ns_nongc_ctime : sci->sc_seg_ctime); in nilfs_segctor_fill_in_super_root()
967 raw_sr->sr_flags = 0; in nilfs_segctor_fill_in_super_root()
969 nilfs_write_inode_common(nilfs->ns_dat, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
971 nilfs_write_inode_common(nilfs->ns_cpfile, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
973 nilfs_write_inode_common(nilfs->ns_sufile, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
975 memset((void *)raw_sr + srsz, 0, nilfs->ns_blocksize - srsz); in nilfs_segctor_fill_in_super_root()
983 if (test_bit(NILFS_I_COLLECTED, &ii->i_state)) in nilfs_redirty_inodes()
984 clear_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_redirty_inodes()
993 if (!test_and_clear_bit(NILFS_I_COLLECTED, &ii->i_state)) in nilfs_drop_collected_inodes()
996 clear_bit(NILFS_I_INODE_SYNC, &ii->i_state); in nilfs_drop_collected_inodes()
997 set_bit(NILFS_I_UPDATED, &ii->i_state); in nilfs_drop_collected_inodes()
1001 static int nilfs_segctor_apply_buffers(struct nilfs_sc_info *sci, in nilfs_segctor_apply_buffers() argument
1013 list_del_init(&bh->b_assoc_buffers); in nilfs_segctor_apply_buffers()
1014 err = collect(sci, bh, inode); in nilfs_segctor_apply_buffers()
1026 list_del_init(&bh->b_assoc_buffers); in nilfs_segctor_apply_buffers()
1032 static size_t nilfs_segctor_buffer_rest(struct nilfs_sc_info *sci) in nilfs_segctor_buffer_rest() argument
1035 return sci->sc_segbuf_nblocks - in nilfs_segctor_buffer_rest()
1036 (sci->sc_nblk_this_inc + sci->sc_curseg->sb_sum.nblocks); in nilfs_segctor_buffer_rest()
1039 static int nilfs_segctor_scan_file(struct nilfs_sc_info *sci, in nilfs_segctor_scan_file() argument
1047 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) { in nilfs_segctor_scan_file()
1048 size_t n, rest = nilfs_segctor_buffer_rest(sci); in nilfs_segctor_scan_file()
1054 sci, inode, &data_buffers, in nilfs_segctor_scan_file()
1055 sc_ops->collect_data); in nilfs_segctor_scan_file()
1056 BUG_ON(!err); /* always receive -E2BIG or true error */ in nilfs_segctor_scan_file()
1062 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) { in nilfs_segctor_scan_file()
1064 sci, inode, &data_buffers, sc_ops->collect_data); in nilfs_segctor_scan_file()
1068 sci, inode, &node_buffers, NULL); in nilfs_segctor_scan_file()
1071 sci->sc_stage.flags |= NILFS_CF_NODE; in nilfs_segctor_scan_file()
1075 sci, inode, &node_buffers, sc_ops->collect_node); in nilfs_segctor_scan_file()
1079 nilfs_bmap_lookup_dirty_buffers(NILFS_I(inode)->i_bmap, &node_buffers); in nilfs_segctor_scan_file()
1081 sci, inode, &node_buffers, sc_ops->collect_bmap); in nilfs_segctor_scan_file()
1085 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_scan_file()
1086 sci->sc_stage.flags &= ~NILFS_CF_NODE; in nilfs_segctor_scan_file()
1092 static int nilfs_segctor_scan_file_dsync(struct nilfs_sc_info *sci, in nilfs_segctor_scan_file_dsync() argument
1096 size_t n, rest = nilfs_segctor_buffer_rest(sci); in nilfs_segctor_scan_file_dsync()
1100 sci->sc_dsync_start, in nilfs_segctor_scan_file_dsync()
1101 sci->sc_dsync_end); in nilfs_segctor_scan_file_dsync()
1103 err = nilfs_segctor_apply_buffers(sci, inode, &data_buffers, in nilfs_segctor_scan_file_dsync()
1106 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_scan_file_dsync()
1108 /* always receive -E2BIG or true error if n > rest */ in nilfs_segctor_scan_file_dsync()
1113 static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_collect_blocks() argument
1115 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_collect_blocks()
1121 switch (nilfs_sc_cstage_get(sci)) { in nilfs_segctor_collect_blocks()
1123 /* Pre-processes */ in nilfs_segctor_collect_blocks()
1124 sci->sc_stage.flags = 0; in nilfs_segctor_collect_blocks()
1126 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) { in nilfs_segctor_collect_blocks()
1127 sci->sc_nblk_inc = 0; in nilfs_segctor_collect_blocks()
1128 sci->sc_curseg->sb_sum.flags = NILFS_SS_LOGBGN; in nilfs_segctor_collect_blocks()
1130 nilfs_sc_cstage_set(sci, NILFS_ST_DSYNC); in nilfs_segctor_collect_blocks()
1135 sci->sc_stage.dirty_file_ptr = NULL; in nilfs_segctor_collect_blocks()
1136 sci->sc_stage.gc_inode_ptr = NULL; in nilfs_segctor_collect_blocks()
1138 nilfs_sc_cstage_set(sci, NILFS_ST_DAT); in nilfs_segctor_collect_blocks()
1141 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1145 head = &sci->sc_gc_inodes; in nilfs_segctor_collect_blocks()
1146 ii = list_prepare_entry(sci->sc_stage.gc_inode_ptr, in nilfs_segctor_collect_blocks()
1150 sci, &ii->vfs_inode, in nilfs_segctor_collect_blocks()
1153 sci->sc_stage.gc_inode_ptr = list_entry( in nilfs_segctor_collect_blocks()
1154 ii->i_dirty.prev, in nilfs_segctor_collect_blocks()
1159 set_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_segctor_collect_blocks()
1161 sci->sc_stage.gc_inode_ptr = NULL; in nilfs_segctor_collect_blocks()
1163 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1166 head = &sci->sc_dirty_files; in nilfs_segctor_collect_blocks()
1167 ii = list_prepare_entry(sci->sc_stage.dirty_file_ptr, head, in nilfs_segctor_collect_blocks()
1170 clear_bit(NILFS_I_DIRTY, &ii->i_state); in nilfs_segctor_collect_blocks()
1172 err = nilfs_segctor_scan_file(sci, &ii->vfs_inode, in nilfs_segctor_collect_blocks()
1175 sci->sc_stage.dirty_file_ptr = in nilfs_segctor_collect_blocks()
1176 list_entry(ii->i_dirty.prev, in nilfs_segctor_collect_blocks()
1181 /* sci->sc_stage.dirty_file_ptr = NILFS_I(inode); */ in nilfs_segctor_collect_blocks()
1184 sci->sc_stage.dirty_file_ptr = NULL; in nilfs_segctor_collect_blocks()
1186 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1189 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1190 sci->sc_stage.flags |= NILFS_CF_IFILE_STARTED; in nilfs_segctor_collect_blocks()
1193 err = nilfs_segctor_scan_file(sci, sci->sc_root->ifile, in nilfs_segctor_collect_blocks()
1197 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1199 err = nilfs_segctor_create_checkpoint(sci); in nilfs_segctor_collect_blocks()
1204 err = nilfs_segctor_scan_file(sci, nilfs->ns_cpfile, in nilfs_segctor_collect_blocks()
1208 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1211 err = nilfs_sufile_freev(nilfs->ns_sufile, sci->sc_freesegs, in nilfs_segctor_collect_blocks()
1212 sci->sc_nfreesegs, &ndone); in nilfs_segctor_collect_blocks()
1214 nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_collect_blocks()
1215 sci->sc_freesegs, ndone, in nilfs_segctor_collect_blocks()
1219 sci->sc_stage.flags |= NILFS_CF_SUFREED; in nilfs_segctor_collect_blocks()
1221 err = nilfs_segctor_scan_file(sci, nilfs->ns_sufile, in nilfs_segctor_collect_blocks()
1225 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1229 err = nilfs_segctor_scan_file(sci, nilfs->ns_dat, in nilfs_segctor_collect_blocks()
1234 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1237 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1242 err = nilfs_segctor_add_super_root(sci); in nilfs_segctor_collect_blocks()
1247 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND; in nilfs_segctor_collect_blocks()
1248 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1252 sci->sc_curseg->sb_sum.flags |= NILFS_SS_SYNDT; in nilfs_segctor_collect_blocks()
1253 ii = sci->sc_dsync_inode; in nilfs_segctor_collect_blocks()
1254 if (!test_bit(NILFS_I_BUSY, &ii->i_state)) in nilfs_segctor_collect_blocks()
1257 err = nilfs_segctor_scan_file_dsync(sci, &ii->vfs_inode); in nilfs_segctor_collect_blocks()
1260 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND; in nilfs_segctor_collect_blocks()
1261 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1274 * nilfs_segctor_begin_construction - setup segment buffer to make a new log
1275 * @sci: nilfs_sc_info
1278 static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci, in nilfs_segctor_begin_construction() argument
1285 segbuf = nilfs_segbuf_new(sci->sc_super); in nilfs_segctor_begin_construction()
1287 return -ENOMEM; in nilfs_segctor_begin_construction()
1289 if (list_empty(&sci->sc_write_logs)) { in nilfs_segctor_begin_construction()
1290 nilfs_segbuf_map(segbuf, nilfs->ns_segnum, in nilfs_segctor_begin_construction()
1291 nilfs->ns_pseg_offset, nilfs); in nilfs_segctor_begin_construction()
1292 if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { in nilfs_segctor_begin_construction()
1294 nilfs_segbuf_map(segbuf, nilfs->ns_segnum, 0, nilfs); in nilfs_segctor_begin_construction()
1297 segbuf->sb_sum.seg_seq = nilfs->ns_seg_seq; in nilfs_segctor_begin_construction()
1298 nextnum = nilfs->ns_nextnum; in nilfs_segctor_begin_construction()
1300 if (nilfs->ns_segnum == nilfs->ns_nextnum) in nilfs_segctor_begin_construction()
1305 prev = NILFS_LAST_SEGBUF(&sci->sc_write_logs); in nilfs_segctor_begin_construction()
1307 segbuf->sb_sum.seg_seq = prev->sb_sum.seg_seq; in nilfs_segctor_begin_construction()
1308 nextnum = prev->sb_nextnum; in nilfs_segctor_begin_construction()
1310 if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { in nilfs_segctor_begin_construction()
1311 nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); in nilfs_segctor_begin_construction()
1312 segbuf->sb_sum.seg_seq++; in nilfs_segctor_begin_construction()
1317 err = nilfs_sufile_mark_dirty(nilfs->ns_sufile, segbuf->sb_segnum); in nilfs_segctor_begin_construction()
1322 err = nilfs_sufile_alloc(nilfs->ns_sufile, &nextnum); in nilfs_segctor_begin_construction()
1328 BUG_ON(!list_empty(&sci->sc_segbufs)); in nilfs_segctor_begin_construction()
1329 list_add_tail(&segbuf->sb_list, &sci->sc_segbufs); in nilfs_segctor_begin_construction()
1330 sci->sc_segbuf_nblocks = segbuf->sb_rest_blocks; in nilfs_segctor_begin_construction()
1338 static int nilfs_segctor_extend_segments(struct nilfs_sc_info *sci, in nilfs_segctor_extend_segments() argument
1342 struct inode *sufile = nilfs->ns_sufile; in nilfs_segctor_extend_segments()
1347 prev = NILFS_LAST_SEGBUF(&sci->sc_segbufs); in nilfs_segctor_extend_segments()
1354 err = nilfs_sufile_mark_dirty(sufile, prev->sb_nextnum); in nilfs_segctor_extend_segments()
1360 err = -ENOMEM; in nilfs_segctor_extend_segments()
1361 segbuf = nilfs_segbuf_new(sci->sc_super); in nilfs_segctor_extend_segments()
1365 /* map this buffer to region of segment on-disk */ in nilfs_segctor_extend_segments()
1366 nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); in nilfs_segctor_extend_segments()
1367 sci->sc_segbuf_nblocks += segbuf->sb_rest_blocks; in nilfs_segctor_extend_segments()
1374 segbuf->sb_sum.seg_seq = prev->sb_sum.seg_seq + 1; in nilfs_segctor_extend_segments()
1377 list_add_tail(&segbuf->sb_list, &list); in nilfs_segctor_extend_segments()
1380 list_splice_tail(&list, &sci->sc_segbufs); in nilfs_segctor_extend_segments()
1387 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_segctor_extend_segments()
1398 struct inode *sufile = nilfs->ns_sufile; in nilfs_free_incomplete_logs()
1402 if (nilfs->ns_nextnum != segbuf->sb_nextnum) { in nilfs_free_incomplete_logs()
1403 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_free_incomplete_logs()
1406 if (atomic_read(&segbuf->sb_err)) { in nilfs_free_incomplete_logs()
1408 if (segbuf->sb_pseg_start != segbuf->sb_fseg_start) in nilfs_free_incomplete_logs()
1413 nilfs_terminate_segment(nilfs, segbuf->sb_fseg_start, in nilfs_free_incomplete_logs()
1414 segbuf->sb_fseg_end); in nilfs_free_incomplete_logs()
1421 if (prev->sb_nextnum != segbuf->sb_nextnum) { in nilfs_free_incomplete_logs()
1422 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_free_incomplete_logs()
1425 if (atomic_read(&segbuf->sb_err) && in nilfs_free_incomplete_logs()
1426 segbuf->sb_segnum != nilfs->ns_nextnum) in nilfs_free_incomplete_logs()
1428 nilfs_sufile_set_error(sufile, segbuf->sb_segnum); in nilfs_free_incomplete_logs()
1433 static void nilfs_segctor_update_segusage(struct nilfs_sc_info *sci, in nilfs_segctor_update_segusage() argument
1440 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_update_segusage()
1441 live_blocks = segbuf->sb_sum.nblocks + in nilfs_segctor_update_segusage()
1442 (segbuf->sb_pseg_start - segbuf->sb_fseg_start); in nilfs_segctor_update_segusage()
1443 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_segctor_update_segusage()
1445 sci->sc_seg_ctime); in nilfs_segctor_update_segusage()
1456 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_cancel_segusage()
1457 segbuf->sb_pseg_start - in nilfs_cancel_segusage()
1458 segbuf->sb_fseg_start, 0); in nilfs_cancel_segusage()
1462 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_cancel_segusage()
1468 static void nilfs_segctor_truncate_segments(struct nilfs_sc_info *sci, in nilfs_segctor_truncate_segments() argument
1475 list_for_each_entry_continue(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_truncate_segments()
1476 sci->sc_segbuf_nblocks -= segbuf->sb_rest_blocks; in nilfs_segctor_truncate_segments()
1477 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_segctor_truncate_segments()
1480 nilfs_truncate_logs(&sci->sc_segbufs, last); in nilfs_segctor_truncate_segments()
1484 static int nilfs_segctor_collect(struct nilfs_sc_info *sci, in nilfs_segctor_collect() argument
1487 struct nilfs_cstage prev_stage = sci->sc_stage; in nilfs_segctor_collect()
1492 sci->sc_nblk_this_inc = 0; in nilfs_segctor_collect()
1493 sci->sc_curseg = NILFS_FIRST_SEGBUF(&sci->sc_segbufs); in nilfs_segctor_collect()
1495 err = nilfs_segctor_reset_segment_buffer(sci); in nilfs_segctor_collect()
1499 err = nilfs_segctor_collect_blocks(sci, mode); in nilfs_segctor_collect()
1500 sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks; in nilfs_segctor_collect()
1504 if (unlikely(err != -E2BIG)) in nilfs_segctor_collect()
1509 nilfs_sc_cstage_get(sci) < NILFS_ST_CPFILE) in nilfs_segctor_collect()
1512 nilfs_clear_logs(&sci->sc_segbufs); in nilfs_segctor_collect()
1514 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { in nilfs_segctor_collect()
1515 err = nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_collect()
1516 sci->sc_freesegs, in nilfs_segctor_collect()
1517 sci->sc_nfreesegs, in nilfs_segctor_collect()
1520 sci->sc_stage.flags &= ~NILFS_CF_SUFREED; in nilfs_segctor_collect()
1523 err = nilfs_segctor_extend_segments(sci, nilfs, nadd); in nilfs_segctor_collect()
1528 sci->sc_stage = prev_stage; in nilfs_segctor_collect()
1530 nilfs_segctor_truncate_segments(sci, sci->sc_curseg, nilfs->ns_sufile); in nilfs_segctor_collect()
1540 BUG_ON(!list_empty(&new_bh->b_assoc_buffers)); in nilfs_list_replace_buffer()
1542 list_replace_init(&old_bh->b_assoc_buffers, &new_bh->b_assoc_buffers); in nilfs_list_replace_buffer()
1547 nilfs_segctor_update_payload_blocknr(struct nilfs_sc_info *sci, in nilfs_segctor_update_payload_blocknr() argument
1553 unsigned long nfinfo = segbuf->sb_sum.nfinfo; in nilfs_segctor_update_payload_blocknr()
1566 blocknr = segbuf->sb_pseg_start + segbuf->sb_sum.nsumblk; in nilfs_segctor_update_payload_blocknr()
1567 ssp.bh = NILFS_SEGBUF_FIRST_BH(&segbuf->sb_segsum_buffers); in nilfs_segctor_update_payload_blocknr()
1570 list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) { in nilfs_segctor_update_payload_blocknr()
1571 if (bh == segbuf->sb_super_root) in nilfs_segctor_update_payload_blocknr()
1575 sci, &ssp, sizeof(*finfo)); in nilfs_segctor_update_payload_blocknr()
1576 ino = le64_to_cpu(finfo->fi_ino); in nilfs_segctor_update_payload_blocknr()
1577 nblocks = le32_to_cpu(finfo->fi_nblocks); in nilfs_segctor_update_payload_blocknr()
1578 ndatablk = le32_to_cpu(finfo->fi_ndatablk); in nilfs_segctor_update_payload_blocknr()
1580 inode = bh->b_page->mapping->host; in nilfs_segctor_update_payload_blocknr()
1591 err = nilfs_bmap_assign(NILFS_I(inode)->i_bmap, &bh, blocknr, in nilfs_segctor_update_payload_blocknr()
1600 sc_op->write_data_binfo(sci, &ssp, &binfo); in nilfs_segctor_update_payload_blocknr()
1602 sc_op->write_node_binfo(sci, &ssp, &binfo); in nilfs_segctor_update_payload_blocknr()
1605 if (--nblocks == 0) { in nilfs_segctor_update_payload_blocknr()
1607 if (--nfinfo == 0) in nilfs_segctor_update_payload_blocknr()
1610 ndatablk--; in nilfs_segctor_update_payload_blocknr()
1619 static int nilfs_segctor_assign(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_assign() argument
1624 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_assign()
1625 err = nilfs_segctor_update_payload_blocknr(sci, segbuf, mode); in nilfs_segctor_assign()
1637 * For split b-tree node pages, this function may be called in nilfs_begin_page_io()
1648 static void nilfs_segctor_prepare_write(struct nilfs_sc_info *sci) in nilfs_segctor_prepare_write() argument
1653 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_prepare_write()
1656 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_segctor_prepare_write()
1658 if (bh->b_page != bd_page) { in nilfs_segctor_prepare_write()
1665 bd_page = bh->b_page; in nilfs_segctor_prepare_write()
1669 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_segctor_prepare_write()
1672 if (bh == segbuf->sb_super_root) { in nilfs_segctor_prepare_write()
1673 if (bh->b_page != bd_page) { in nilfs_segctor_prepare_write()
1678 bd_page = bh->b_page; in nilfs_segctor_prepare_write()
1682 if (bh->b_page != fs_page) { in nilfs_segctor_prepare_write()
1684 fs_page = bh->b_page; in nilfs_segctor_prepare_write()
1697 static int nilfs_segctor_write(struct nilfs_sc_info *sci, in nilfs_segctor_write() argument
1702 ret = nilfs_write_logs(&sci->sc_segbufs, nilfs); in nilfs_segctor_write()
1703 list_splice_tail_init(&sci->sc_segbufs, &sci->sc_write_logs); in nilfs_segctor_write()
1714 * For b-tree node pages, this function may be called twice in nilfs_end_page_io()
1719 * For pages holding split b-tree node buffers, dirty in nilfs_end_page_io()
1755 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_abort_logs()
1757 if (bh->b_page != bd_page) { in nilfs_abort_logs()
1760 bd_page = bh->b_page; in nilfs_abort_logs()
1764 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_abort_logs()
1767 if (bh == segbuf->sb_super_root) { in nilfs_abort_logs()
1768 if (bh->b_page != bd_page) { in nilfs_abort_logs()
1770 bd_page = bh->b_page; in nilfs_abort_logs()
1774 if (bh->b_page != fs_page) { in nilfs_abort_logs()
1776 fs_page = bh->b_page; in nilfs_abort_logs()
1786 static void nilfs_segctor_abort_construction(struct nilfs_sc_info *sci, in nilfs_segctor_abort_construction() argument
1792 list_splice_tail_init(&sci->sc_write_logs, &logs); in nilfs_segctor_abort_construction()
1796 list_splice_tail_init(&sci->sc_segbufs, &logs); in nilfs_segctor_abort_construction()
1797 nilfs_cancel_segusage(&logs, nilfs->ns_sufile); in nilfs_segctor_abort_construction()
1800 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { in nilfs_segctor_abort_construction()
1801 ret = nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_abort_construction()
1802 sci->sc_freesegs, in nilfs_segctor_abort_construction()
1803 sci->sc_nfreesegs, in nilfs_segctor_abort_construction()
1814 nilfs->ns_segnum = segbuf->sb_segnum; in nilfs_set_next_segment()
1815 nilfs->ns_nextnum = segbuf->sb_nextnum; in nilfs_set_next_segment()
1816 nilfs->ns_pseg_offset = segbuf->sb_pseg_start - segbuf->sb_fseg_start in nilfs_set_next_segment()
1817 + segbuf->sb_sum.nblocks; in nilfs_set_next_segment()
1818 nilfs->ns_seg_seq = segbuf->sb_sum.seg_seq; in nilfs_set_next_segment()
1819 nilfs->ns_ctime = segbuf->sb_sum.ctime; in nilfs_set_next_segment()
1822 static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) in nilfs_segctor_complete_write() argument
1826 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_complete_write()
1829 list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) { in nilfs_segctor_complete_write()
1832 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_segctor_complete_write()
1836 if (bh->b_page != bd_page) { in nilfs_segctor_complete_write()
1839 bd_page = bh->b_page; in nilfs_segctor_complete_write()
1846 * identifiable by the discontinuity of bh->b_page in nilfs_segctor_complete_write()
1849 * For B-tree node blocks, however, this assumption is not in nilfs_segctor_complete_write()
1850 * guaranteed. The cleanup code of B-tree node pages needs in nilfs_segctor_complete_write()
1853 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_segctor_complete_write()
1861 set_mask_bits(&bh->b_state, clear_bits, set_bits); in nilfs_segctor_complete_write()
1862 if (bh == segbuf->sb_super_root) { in nilfs_segctor_complete_write()
1863 if (bh->b_page != bd_page) { in nilfs_segctor_complete_write()
1865 bd_page = bh->b_page; in nilfs_segctor_complete_write()
1870 if (bh->b_page != fs_page) { in nilfs_segctor_complete_write()
1872 fs_page = bh->b_page; in nilfs_segctor_complete_write()
1877 if (segbuf->sb_sum.flags & NILFS_SS_LOGBGN) { in nilfs_segctor_complete_write()
1878 set_bit(NILFS_SC_UNCLOSED, &sci->sc_flags); in nilfs_segctor_complete_write()
1879 sci->sc_lseg_stime = jiffies; in nilfs_segctor_complete_write()
1881 if (segbuf->sb_sum.flags & NILFS_SS_LOGEND) in nilfs_segctor_complete_write()
1882 clear_bit(NILFS_SC_UNCLOSED, &sci->sc_flags); in nilfs_segctor_complete_write()
1894 nilfs_drop_collected_inodes(&sci->sc_dirty_files); in nilfs_segctor_complete_write()
1897 nilfs_drop_collected_inodes(&sci->sc_gc_inodes); in nilfs_segctor_complete_write()
1899 nilfs->ns_nongc_ctime = sci->sc_seg_ctime; in nilfs_segctor_complete_write()
1901 sci->sc_nblk_inc += sci->sc_nblk_this_inc; in nilfs_segctor_complete_write()
1903 segbuf = NILFS_LAST_SEGBUF(&sci->sc_write_logs); in nilfs_segctor_complete_write()
1907 nilfs->ns_flushed_device = 0; in nilfs_segctor_complete_write()
1908 nilfs_set_last_segment(nilfs, segbuf->sb_pseg_start, in nilfs_segctor_complete_write()
1909 segbuf->sb_sum.seg_seq, nilfs->ns_cno++); in nilfs_segctor_complete_write()
1911 clear_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); in nilfs_segctor_complete_write()
1912 clear_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_complete_write()
1913 set_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); in nilfs_segctor_complete_write()
1914 nilfs_segctor_clear_metadata_dirty(sci); in nilfs_segctor_complete_write()
1916 clear_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); in nilfs_segctor_complete_write()
1919 static int nilfs_segctor_wait(struct nilfs_sc_info *sci) in nilfs_segctor_wait() argument
1923 ret = nilfs_wait_on_logs(&sci->sc_write_logs); in nilfs_segctor_wait()
1925 nilfs_segctor_complete_write(sci); in nilfs_segctor_wait()
1926 nilfs_destroy_logs(&sci->sc_write_logs); in nilfs_segctor_wait()
1931 static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci, in nilfs_segctor_collect_dirty_files() argument
1935 struct inode *ifile = sci->sc_root->ifile; in nilfs_segctor_collect_dirty_files()
1937 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1939 list_for_each_entry_safe(ii, n, &nilfs->ns_dirty_files, i_dirty) { in nilfs_segctor_collect_dirty_files()
1940 if (!ii->i_bh) { in nilfs_segctor_collect_dirty_files()
1944 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1946 ifile, ii->vfs_inode.i_ino, &ibh); in nilfs_segctor_collect_dirty_files()
1948 nilfs_warn(sci->sc_super, in nilfs_segctor_collect_dirty_files()
1950 err, ii->vfs_inode.i_ino); in nilfs_segctor_collect_dirty_files()
1953 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1954 if (likely(!ii->i_bh)) in nilfs_segctor_collect_dirty_files()
1955 ii->i_bh = ibh; in nilfs_segctor_collect_dirty_files()
1962 mark_buffer_dirty(ii->i_bh); in nilfs_segctor_collect_dirty_files()
1965 clear_bit(NILFS_I_QUEUED, &ii->i_state); in nilfs_segctor_collect_dirty_files()
1966 set_bit(NILFS_I_BUSY, &ii->i_state); in nilfs_segctor_collect_dirty_files()
1967 list_move_tail(&ii->i_dirty, &sci->sc_dirty_files); in nilfs_segctor_collect_dirty_files()
1969 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1974 static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci, in nilfs_segctor_drop_written_files() argument
1978 int during_mount = !(sci->sc_super->s_flags & SB_ACTIVE); in nilfs_segctor_drop_written_files()
1981 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
1982 list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) { in nilfs_segctor_drop_written_files()
1983 if (!test_and_clear_bit(NILFS_I_UPDATED, &ii->i_state) || in nilfs_segctor_drop_written_files()
1984 test_bit(NILFS_I_DIRTY, &ii->i_state)) in nilfs_segctor_drop_written_files()
1987 clear_bit(NILFS_I_BUSY, &ii->i_state); in nilfs_segctor_drop_written_files()
1988 brelse(ii->i_bh); in nilfs_segctor_drop_written_files()
1989 ii->i_bh = NULL; in nilfs_segctor_drop_written_files()
1990 list_del_init(&ii->i_dirty); in nilfs_segctor_drop_written_files()
1991 if (!ii->vfs_inode.i_nlink || during_mount) { in nilfs_segctor_drop_written_files()
1996 list_add_tail(&ii->i_dirty, &sci->sc_iput_queue); in nilfs_segctor_drop_written_files()
1999 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2000 iput(&ii->vfs_inode); in nilfs_segctor_drop_written_files()
2001 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2004 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2007 schedule_work(&sci->sc_iput_work); in nilfs_segctor_drop_written_files()
2013 static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_do_construct() argument
2015 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_do_construct()
2018 nilfs_sc_cstage_set(sci, NILFS_ST_INIT); in nilfs_segctor_do_construct()
2019 sci->sc_cno = nilfs->ns_cno; in nilfs_segctor_do_construct()
2021 err = nilfs_segctor_collect_dirty_files(sci, nilfs); in nilfs_segctor_do_construct()
2025 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) in nilfs_segctor_do_construct()
2026 set_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_do_construct()
2028 if (nilfs_segctor_clean(sci)) in nilfs_segctor_do_construct()
2032 sci->sc_stage.flags &= ~NILFS_CF_HISTORY_MASK; in nilfs_segctor_do_construct()
2034 err = nilfs_segctor_begin_construction(sci, nilfs); in nilfs_segctor_do_construct()
2039 sci->sc_seg_ctime = ktime_get_real_seconds(); in nilfs_segctor_do_construct()
2041 err = nilfs_segctor_collect(sci, nilfs, mode); in nilfs_segctor_do_construct()
2046 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE && in nilfs_segctor_do_construct()
2047 nilfs_segbuf_empty(sci->sc_curseg)) { in nilfs_segctor_do_construct()
2048 nilfs_segctor_abort_construction(sci, nilfs, 1); in nilfs_segctor_do_construct()
2052 err = nilfs_segctor_assign(sci, mode); in nilfs_segctor_do_construct()
2056 if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) in nilfs_segctor_do_construct()
2057 nilfs_segctor_fill_in_file_bmap(sci); in nilfs_segctor_do_construct()
2060 nilfs_sc_cstage_get(sci) >= NILFS_ST_CPFILE) { in nilfs_segctor_do_construct()
2061 err = nilfs_segctor_fill_in_checkpoint(sci); in nilfs_segctor_do_construct()
2065 nilfs_segctor_fill_in_super_root(sci, nilfs); in nilfs_segctor_do_construct()
2067 nilfs_segctor_update_segusage(sci, nilfs->ns_sufile); in nilfs_segctor_do_construct()
2070 nilfs_segctor_prepare_write(sci); in nilfs_segctor_do_construct()
2072 nilfs_add_checksums_on_logs(&sci->sc_segbufs, in nilfs_segctor_do_construct()
2073 nilfs->ns_crc_seed); in nilfs_segctor_do_construct()
2075 err = nilfs_segctor_write(sci, nilfs); in nilfs_segctor_do_construct()
2079 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE || in nilfs_segctor_do_construct()
2080 nilfs->ns_blocksize_bits != PAGE_SHIFT) { in nilfs_segctor_do_construct()
2088 err = nilfs_segctor_wait(sci); in nilfs_segctor_do_construct()
2092 } while (nilfs_sc_cstage_get(sci) != NILFS_ST_DONE); in nilfs_segctor_do_construct()
2095 nilfs_segctor_drop_written_files(sci, nilfs); in nilfs_segctor_do_construct()
2099 if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) in nilfs_segctor_do_construct()
2100 nilfs_redirty_inodes(&sci->sc_dirty_files); in nilfs_segctor_do_construct()
2104 nilfs_redirty_inodes(&sci->sc_gc_inodes); in nilfs_segctor_do_construct()
2105 nilfs_segctor_abort_construction(sci, nilfs, err); in nilfs_segctor_do_construct()
2110 * nilfs_segctor_start_timer - set timer of background write
2111 * @sci: nilfs_sc_info
2117 static void nilfs_segctor_start_timer(struct nilfs_sc_info *sci) in nilfs_segctor_start_timer() argument
2119 spin_lock(&sci->sc_state_lock); in nilfs_segctor_start_timer()
2120 if (!(sci->sc_state & NILFS_SEGCTOR_COMMIT)) { in nilfs_segctor_start_timer()
2121 sci->sc_timer.expires = jiffies + sci->sc_interval; in nilfs_segctor_start_timer()
2122 add_timer(&sci->sc_timer); in nilfs_segctor_start_timer()
2123 sci->sc_state |= NILFS_SEGCTOR_COMMIT; in nilfs_segctor_start_timer()
2125 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_start_timer()
2128 static void nilfs_segctor_do_flush(struct nilfs_sc_info *sci, int bn) in nilfs_segctor_do_flush() argument
2130 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_flush()
2131 if (!(sci->sc_flush_request & BIT(bn))) { in nilfs_segctor_do_flush()
2132 unsigned long prev_req = sci->sc_flush_request; in nilfs_segctor_do_flush()
2134 sci->sc_flush_request |= BIT(bn); in nilfs_segctor_do_flush()
2136 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_do_flush()
2138 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_flush()
2142 * nilfs_flush_segment - trigger a segment construction for resource control
2148 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_flush_segment()
2149 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_flush_segment() local
2151 if (!sci || nilfs_doing_construction()) in nilfs_flush_segment()
2153 nilfs_segctor_do_flush(sci, NILFS_MDT_INODE(sb, ino) ? ino : 0); in nilfs_flush_segment()
2164 static int nilfs_segctor_sync(struct nilfs_sc_info *sci) in nilfs_segctor_sync() argument
2169 spin_lock(&sci->sc_state_lock); in nilfs_segctor_sync()
2173 wait_req.seq = ++sci->sc_seq_request; in nilfs_segctor_sync()
2174 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_sync()
2177 add_wait_queue(&sci->sc_wait_request, &wait_req.wq); in nilfs_segctor_sync()
2179 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_sync()
2190 err = -ERESTARTSYS; in nilfs_segctor_sync()
2193 finish_wait(&sci->sc_wait_request, &wait_req.wq); in nilfs_segctor_sync()
2197 static void nilfs_segctor_wakeup(struct nilfs_sc_info *sci, int err) in nilfs_segctor_wakeup() argument
2202 spin_lock_irqsave(&sci->sc_wait_request.lock, flags); in nilfs_segctor_wakeup()
2203 list_for_each_entry_safe(wrq, n, &sci->sc_wait_request.head, wq.entry) { in nilfs_segctor_wakeup()
2204 if (!atomic_read(&wrq->done) && in nilfs_segctor_wakeup()
2205 nilfs_cnt32_ge(sci->sc_seq_done, wrq->seq)) { in nilfs_segctor_wakeup()
2206 wrq->err = err; in nilfs_segctor_wakeup()
2207 atomic_set(&wrq->done, 1); in nilfs_segctor_wakeup()
2209 if (atomic_read(&wrq->done)) { in nilfs_segctor_wakeup()
2210 wrq->wq.func(&wrq->wq, in nilfs_segctor_wakeup()
2215 spin_unlock_irqrestore(&sci->sc_wait_request.lock, flags); in nilfs_segctor_wakeup()
2219 * nilfs_construct_segment - construct a logical segment
2225 * %-EROFS - Read only filesystem.
2227 * %-EIO - I/O error
2229 * %-ENOSPC - No space left on device (only in a panic state).
2231 * %-ERESTARTSYS - Interrupted.
2233 * %-ENOMEM - Insufficient memory available.
2237 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_construct_segment()
2238 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_construct_segment() local
2239 struct nilfs_transaction_info *ti; in nilfs_construct_segment() local
2242 if (!sci) in nilfs_construct_segment()
2243 return -EROFS; in nilfs_construct_segment()
2246 BUG_ON((ti = current->journal_info) && ti->ti_magic == NILFS_TI_MAGIC); in nilfs_construct_segment()
2248 err = nilfs_segctor_sync(sci); in nilfs_construct_segment()
2253 * nilfs_construct_dsync_segment - construct a data-only logical segment
2262 * %-EROFS - Read only filesystem.
2264 * %-EIO - I/O error
2266 * %-ENOSPC - No space left on device (only in a panic state).
2268 * %-ERESTARTSYS - Interrupted.
2270 * %-ENOMEM - Insufficient memory available.
2275 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_construct_dsync_segment()
2276 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_construct_dsync_segment() local
2278 struct nilfs_transaction_info ti; in nilfs_construct_dsync_segment() local
2281 if (!sci) in nilfs_construct_dsync_segment()
2282 return -EROFS; in nilfs_construct_dsync_segment()
2284 nilfs_transaction_lock(sb, &ti, 0); in nilfs_construct_dsync_segment()
2287 if (test_bit(NILFS_I_INODE_SYNC, &ii->i_state) || in nilfs_construct_dsync_segment()
2289 test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || in nilfs_construct_dsync_segment()
2292 err = nilfs_segctor_sync(sci); in nilfs_construct_dsync_segment()
2296 spin_lock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2297 if (!test_bit(NILFS_I_QUEUED, &ii->i_state) && in nilfs_construct_dsync_segment()
2298 !test_bit(NILFS_I_BUSY, &ii->i_state)) { in nilfs_construct_dsync_segment()
2299 spin_unlock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2303 spin_unlock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2304 sci->sc_dsync_inode = ii; in nilfs_construct_dsync_segment()
2305 sci->sc_dsync_start = start; in nilfs_construct_dsync_segment()
2306 sci->sc_dsync_end = end; in nilfs_construct_dsync_segment()
2308 err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC); in nilfs_construct_dsync_segment()
2310 nilfs->ns_flushed_device = 0; in nilfs_construct_dsync_segment()
2320 * nilfs_segctor_accept - record accepted sequence count of log-write requests
2321 * @sci: segment constructor object
2323 static void nilfs_segctor_accept(struct nilfs_sc_info *sci) in nilfs_segctor_accept() argument
2325 spin_lock(&sci->sc_state_lock); in nilfs_segctor_accept()
2326 sci->sc_seq_accepted = sci->sc_seq_request; in nilfs_segctor_accept()
2327 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_accept()
2328 del_timer_sync(&sci->sc_timer); in nilfs_segctor_accept()
2332 * nilfs_segctor_notify - notify the result of request to caller threads
2333 * @sci: segment constructor object
2337 static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err) in nilfs_segctor_notify() argument
2340 spin_lock(&sci->sc_state_lock); in nilfs_segctor_notify()
2343 sci->sc_state &= ~NILFS_SEGCTOR_COMMIT; in nilfs_segctor_notify()
2344 sci->sc_seq_done = sci->sc_seq_accepted; in nilfs_segctor_notify()
2345 nilfs_segctor_wakeup(sci, err); in nilfs_segctor_notify()
2346 sci->sc_flush_request = 0; in nilfs_segctor_notify()
2349 sci->sc_flush_request &= ~FLUSH_FILE_BIT; in nilfs_segctor_notify()
2351 sci->sc_flush_request &= ~FLUSH_DAT_BIT; in nilfs_segctor_notify()
2353 /* re-enable timer if checkpoint creation was not done */ in nilfs_segctor_notify()
2354 if ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && in nilfs_segctor_notify()
2355 time_before(jiffies, sci->sc_timer.expires)) in nilfs_segctor_notify()
2356 add_timer(&sci->sc_timer); in nilfs_segctor_notify()
2358 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_notify()
2362 * nilfs_segctor_construct - form logs and write them to disk
2363 * @sci: segment constructor object
2366 static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_construct() argument
2368 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_construct()
2372 nilfs_segctor_accept(sci); in nilfs_segctor_construct()
2376 if (!nilfs_segctor_confirm(sci)) in nilfs_segctor_construct()
2377 err = nilfs_segctor_do_construct(sci, mode); in nilfs_segctor_construct()
2381 atomic_set(&nilfs->ns_ndirtyblks, 0); in nilfs_segctor_construct()
2382 if (test_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags) && in nilfs_segctor_construct()
2384 down_write(&nilfs->ns_sem); in nilfs_segctor_construct()
2385 err = -EIO; in nilfs_segctor_construct()
2386 sbp = nilfs_prepare_super(sci->sc_super, in nilfs_segctor_construct()
2390 err = nilfs_commit_super(sci->sc_super, in nilfs_segctor_construct()
2393 up_write(&nilfs->ns_sem); in nilfs_segctor_construct()
2397 nilfs_segctor_notify(sci, mode, err); in nilfs_segctor_construct()
2403 struct nilfs_sc_info *sci = from_timer(sci, t, sc_timer); in nilfs_construction_timeout() local
2405 wake_up_process(sci->sc_timer_task); in nilfs_construction_timeout()
2414 if (!test_bit(NILFS_I_UPDATED, &ii->i_state)) in nilfs_remove_written_gcinodes()
2416 list_del_init(&ii->i_dirty); in nilfs_remove_written_gcinodes()
2417 truncate_inode_pages(&ii->vfs_inode.i_data, 0); in nilfs_remove_written_gcinodes()
2418 nilfs_btnode_cache_clear(&ii->i_btnode_cache); in nilfs_remove_written_gcinodes()
2419 iput(&ii->vfs_inode); in nilfs_remove_written_gcinodes()
2426 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_clean_segments()
2427 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_clean_segments() local
2428 struct nilfs_transaction_info ti; in nilfs_clean_segments() local
2431 if (unlikely(!sci)) in nilfs_clean_segments()
2432 return -EROFS; in nilfs_clean_segments()
2434 nilfs_transaction_lock(sb, &ti, 1); in nilfs_clean_segments()
2436 err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2442 nilfs_mdt_restore_from_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2446 sci->sc_freesegs = kbufs[4]; in nilfs_clean_segments()
2447 sci->sc_nfreesegs = argv[4].v_nmembs; in nilfs_clean_segments()
2448 list_splice_tail_init(&nilfs->ns_gc_inodes, &sci->sc_gc_inodes); in nilfs_clean_segments()
2451 err = nilfs_segctor_construct(sci, SC_LSEG_SR); in nilfs_clean_segments()
2452 nilfs_remove_written_gcinodes(nilfs, &sci->sc_gc_inodes); in nilfs_clean_segments()
2459 schedule_timeout(sci->sc_interval); in nilfs_clean_segments()
2462 int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs, in nilfs_clean_segments()
2463 sci->sc_nfreesegs); in nilfs_clean_segments()
2473 sci->sc_freesegs = NULL; in nilfs_clean_segments()
2474 sci->sc_nfreesegs = 0; in nilfs_clean_segments()
2475 nilfs_mdt_clear_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2480 static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_thread_construct() argument
2482 struct nilfs_transaction_info ti; in nilfs_segctor_thread_construct() local
2484 nilfs_transaction_lock(sci->sc_super, &ti, 0); in nilfs_segctor_thread_construct()
2485 nilfs_segctor_construct(sci, mode); in nilfs_segctor_thread_construct()
2492 if (test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) in nilfs_segctor_thread_construct()
2493 nilfs_segctor_start_timer(sci); in nilfs_segctor_thread_construct()
2495 nilfs_transaction_unlock(sci->sc_super); in nilfs_segctor_thread_construct()
2498 static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci) in nilfs_segctor_do_immediate_flush() argument
2502 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2503 mode = (sci->sc_flush_request & FLUSH_DAT_BIT) ? in nilfs_segctor_do_immediate_flush()
2505 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2508 nilfs_segctor_do_construct(sci, mode); in nilfs_segctor_do_immediate_flush()
2510 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2511 sci->sc_flush_request &= (mode == SC_FLUSH_FILE) ? in nilfs_segctor_do_immediate_flush()
2513 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2515 clear_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags); in nilfs_segctor_do_immediate_flush()
2518 static int nilfs_segctor_flush_mode(struct nilfs_sc_info *sci) in nilfs_segctor_flush_mode() argument
2520 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || in nilfs_segctor_flush_mode()
2521 time_before(jiffies, sci->sc_lseg_stime + sci->sc_mjcp_freq)) { in nilfs_segctor_flush_mode()
2522 if (!(sci->sc_flush_request & ~FLUSH_FILE_BIT)) in nilfs_segctor_flush_mode()
2524 else if (!(sci->sc_flush_request & ~FLUSH_DAT_BIT)) in nilfs_segctor_flush_mode()
2531 * nilfs_segctor_thread - main loop of the segment constructor thread.
2539 struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg; in nilfs_segctor_thread() local
2540 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_thread()
2543 sci->sc_timer_task = current; in nilfs_segctor_thread()
2546 sci->sc_task = current; in nilfs_segctor_thread()
2547 wake_up(&sci->sc_wait_task); /* for nilfs_segctor_start_thread() */ in nilfs_segctor_thread()
2548 nilfs_info(sci->sc_super, in nilfs_segctor_thread()
2550 sci->sc_interval / HZ, sci->sc_mjcp_freq / HZ); in nilfs_segctor_thread()
2552 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2557 if (sci->sc_state & NILFS_SEGCTOR_QUIT) in nilfs_segctor_thread()
2560 if (timeout || sci->sc_seq_request != sci->sc_seq_done) in nilfs_segctor_thread()
2562 else if (sci->sc_flush_request) in nilfs_segctor_thread()
2563 mode = nilfs_segctor_flush_mode(sci); in nilfs_segctor_thread()
2567 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2568 nilfs_segctor_thread_construct(sci, mode); in nilfs_segctor_thread()
2569 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2575 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2577 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2582 prepare_to_wait(&sci->sc_wait_daemon, &wait, in nilfs_segctor_thread()
2585 if (sci->sc_seq_request != sci->sc_seq_done) in nilfs_segctor_thread()
2587 else if (sci->sc_flush_request) in nilfs_segctor_thread()
2589 else if (sci->sc_state & NILFS_SEGCTOR_COMMIT) in nilfs_segctor_thread()
2591 sci->sc_timer.expires); in nilfs_segctor_thread()
2594 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2596 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2598 finish_wait(&sci->sc_wait_daemon, &wait); in nilfs_segctor_thread()
2599 timeout = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && in nilfs_segctor_thread()
2600 time_after_eq(jiffies, sci->sc_timer.expires)); in nilfs_segctor_thread()
2608 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2611 sci->sc_task = NULL; in nilfs_segctor_thread()
2612 wake_up(&sci->sc_wait_task); /* for nilfs_segctor_kill_thread() */ in nilfs_segctor_thread()
2616 static int nilfs_segctor_start_thread(struct nilfs_sc_info *sci) in nilfs_segctor_start_thread() argument
2620 t = kthread_run(nilfs_segctor_thread, sci, "segctord"); in nilfs_segctor_start_thread()
2624 nilfs_err(sci->sc_super, "error %d creating segctord thread", in nilfs_segctor_start_thread()
2628 wait_event(sci->sc_wait_task, sci->sc_task != NULL); in nilfs_segctor_start_thread()
2632 static void nilfs_segctor_kill_thread(struct nilfs_sc_info *sci) in nilfs_segctor_kill_thread() argument
2633 __acquires(&sci->sc_state_lock) in nilfs_segctor_kill_thread()
2634 __releases(&sci->sc_state_lock) in nilfs_segctor_kill_thread()
2636 sci->sc_state |= NILFS_SEGCTOR_QUIT; in nilfs_segctor_kill_thread()
2638 while (sci->sc_task) { in nilfs_segctor_kill_thread()
2639 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_kill_thread()
2640 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_kill_thread()
2641 wait_event(sci->sc_wait_task, sci->sc_task == NULL); in nilfs_segctor_kill_thread()
2642 spin_lock(&sci->sc_state_lock); in nilfs_segctor_kill_thread()
2647 * Setup & clean-up functions
2652 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_segctor_new()
2653 struct nilfs_sc_info *sci; in nilfs_segctor_new() local
2655 sci = kzalloc(sizeof(*sci), GFP_KERNEL); in nilfs_segctor_new()
2656 if (!sci) in nilfs_segctor_new()
2659 sci->sc_super = sb; in nilfs_segctor_new()
2662 sci->sc_root = root; in nilfs_segctor_new()
2664 init_waitqueue_head(&sci->sc_wait_request); in nilfs_segctor_new()
2665 init_waitqueue_head(&sci->sc_wait_daemon); in nilfs_segctor_new()
2666 init_waitqueue_head(&sci->sc_wait_task); in nilfs_segctor_new()
2667 spin_lock_init(&sci->sc_state_lock); in nilfs_segctor_new()
2668 INIT_LIST_HEAD(&sci->sc_dirty_files); in nilfs_segctor_new()
2669 INIT_LIST_HEAD(&sci->sc_segbufs); in nilfs_segctor_new()
2670 INIT_LIST_HEAD(&sci->sc_write_logs); in nilfs_segctor_new()
2671 INIT_LIST_HEAD(&sci->sc_gc_inodes); in nilfs_segctor_new()
2672 INIT_LIST_HEAD(&sci->sc_iput_queue); in nilfs_segctor_new()
2673 INIT_WORK(&sci->sc_iput_work, nilfs_iput_work_func); in nilfs_segctor_new()
2674 timer_setup(&sci->sc_timer, nilfs_construction_timeout, 0); in nilfs_segctor_new()
2676 sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT; in nilfs_segctor_new()
2677 sci->sc_mjcp_freq = HZ * NILFS_SC_DEFAULT_SR_FREQ; in nilfs_segctor_new()
2678 sci->sc_watermark = NILFS_SC_DEFAULT_WATERMARK; in nilfs_segctor_new()
2680 if (nilfs->ns_interval) in nilfs_segctor_new()
2681 sci->sc_interval = HZ * nilfs->ns_interval; in nilfs_segctor_new()
2682 if (nilfs->ns_watermark) in nilfs_segctor_new()
2683 sci->sc_watermark = nilfs->ns_watermark; in nilfs_segctor_new()
2684 return sci; in nilfs_segctor_new()
2687 static void nilfs_segctor_write_out(struct nilfs_sc_info *sci) in nilfs_segctor_write_out() argument
2696 struct nilfs_transaction_info ti; in nilfs_segctor_write_out() local
2698 nilfs_transaction_lock(sci->sc_super, &ti, 0); in nilfs_segctor_write_out()
2699 ret = nilfs_segctor_construct(sci, SC_LSEG_SR); in nilfs_segctor_write_out()
2700 nilfs_transaction_unlock(sci->sc_super); in nilfs_segctor_write_out()
2702 flush_work(&sci->sc_iput_work); in nilfs_segctor_write_out()
2704 } while (ret && retrycount-- > 0); in nilfs_segctor_write_out()
2708 * nilfs_segctor_destroy - destroy the segment constructor.
2709 * @sci: nilfs_sc_info
2715 static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) in nilfs_segctor_destroy() argument
2717 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_destroy()
2720 up_write(&nilfs->ns_segctor_sem); in nilfs_segctor_destroy()
2722 spin_lock(&sci->sc_state_lock); in nilfs_segctor_destroy()
2723 nilfs_segctor_kill_thread(sci); in nilfs_segctor_destroy()
2724 flag = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) || sci->sc_flush_request in nilfs_segctor_destroy()
2725 || sci->sc_seq_request != sci->sc_seq_done); in nilfs_segctor_destroy()
2726 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_destroy()
2728 if (flush_work(&sci->sc_iput_work)) in nilfs_segctor_destroy()
2731 if (flag || !nilfs_segctor_confirm(sci)) in nilfs_segctor_destroy()
2732 nilfs_segctor_write_out(sci); in nilfs_segctor_destroy()
2734 if (!list_empty(&sci->sc_dirty_files)) { in nilfs_segctor_destroy()
2735 nilfs_warn(sci->sc_super, in nilfs_segctor_destroy()
2737 nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1); in nilfs_segctor_destroy()
2740 if (!list_empty(&sci->sc_iput_queue)) { in nilfs_segctor_destroy()
2741 nilfs_warn(sci->sc_super, in nilfs_segctor_destroy()
2743 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 1); in nilfs_segctor_destroy()
2746 WARN_ON(!list_empty(&sci->sc_segbufs)); in nilfs_segctor_destroy()
2747 WARN_ON(!list_empty(&sci->sc_write_logs)); in nilfs_segctor_destroy()
2749 nilfs_put_root(sci->sc_root); in nilfs_segctor_destroy()
2751 down_write(&nilfs->ns_segctor_sem); in nilfs_segctor_destroy()
2753 del_timer_sync(&sci->sc_timer); in nilfs_segctor_destroy()
2754 kfree(sci); in nilfs_segctor_destroy()
2758 * nilfs_attach_log_writer - attach log writer
2768 * %-ENOMEM - Insufficient memory available.
2772 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_attach_log_writer()
2775 if (nilfs->ns_writer) { in nilfs_attach_log_writer()
2779 * read-only mount. in nilfs_attach_log_writer()
2784 nilfs->ns_writer = nilfs_segctor_new(sb, root); in nilfs_attach_log_writer()
2785 if (!nilfs->ns_writer) in nilfs_attach_log_writer()
2786 return -ENOMEM; in nilfs_attach_log_writer()
2788 inode_attach_wb(nilfs->ns_bdev->bd_inode, NULL); in nilfs_attach_log_writer()
2790 err = nilfs_segctor_start_thread(nilfs->ns_writer); in nilfs_attach_log_writer()
2798 * nilfs_detach_log_writer - destroy log writer
2806 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_detach_log_writer()
2809 down_write(&nilfs->ns_segctor_sem); in nilfs_detach_log_writer()
2810 if (nilfs->ns_writer) { in nilfs_detach_log_writer()
2811 nilfs_segctor_destroy(nilfs->ns_writer); in nilfs_detach_log_writer()
2812 nilfs->ns_writer = NULL; in nilfs_detach_log_writer()
2816 spin_lock(&nilfs->ns_inode_lock); in nilfs_detach_log_writer()
2817 if (!list_empty(&nilfs->ns_dirty_files)) { in nilfs_detach_log_writer()
2818 list_splice_init(&nilfs->ns_dirty_files, &garbage_list); in nilfs_detach_log_writer()
2822 spin_unlock(&nilfs->ns_inode_lock); in nilfs_detach_log_writer()
2823 up_write(&nilfs->ns_segctor_sem); in nilfs_detach_log_writer()