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)(a) - (__s32)(b) >= 0))
142 struct nilfs_transaction_info *ti) in nilfs_prepare_segment_lock() argument
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()
159 if (!ti) { in nilfs_prepare_segment_lock()
160 ti = kmem_cache_alloc(nilfs_transaction_cachep, GFP_NOFS); in nilfs_prepare_segment_lock()
161 if (!ti) 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.
177 * @ti: nilfs_transaction_info
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
202 struct nilfs_transaction_info *ti, in nilfs_transaction_begin() argument
206 int ret = nilfs_prepare_segment_lock(sb, ti); in nilfs_transaction_begin()
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()
240 kmem_cache_free(nilfs_transaction_cachep, ti); 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() local
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()
287 kmem_cache_free(nilfs_transaction_cachep, ti); in nilfs_transaction_commit()
294 struct nilfs_transaction_info *ti = current->journal_info; in nilfs_transaction_abort() local
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()
311 kmem_cache_free(nilfs_transaction_cachep, ti); 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 (!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() local
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()
339 struct nilfs_transaction_info *ti, in nilfs_transaction_lock() argument
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() local
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 address_space *mapping = &ii->i_btnode_cache; in nilfs_lookup_dirty_node_buffers()
752 list_add_tail(&bh->b_assoc_buffers, in nilfs_lookup_dirty_node_buffers()
755 bh = bh->b_this_page; in nilfs_lookup_dirty_node_buffers()
771 spin_lock(&nilfs->ns_inode_lock); in nilfs_dispose_list()
773 list_del_init(&ii->i_dirty); in nilfs_dispose_list()
775 if (unlikely(ii->i_bh)) { in nilfs_dispose_list()
776 brelse(ii->i_bh); in nilfs_dispose_list()
777 ii->i_bh = NULL; in nilfs_dispose_list()
779 } else if (test_bit(NILFS_I_DIRTY, &ii->i_state)) { in nilfs_dispose_list()
780 set_bit(NILFS_I_QUEUED, &ii->i_state); in nilfs_dispose_list()
781 list_add_tail(&ii->i_dirty, in nilfs_dispose_list()
782 &nilfs->ns_dirty_files); in nilfs_dispose_list()
789 spin_unlock(&nilfs->ns_inode_lock); in nilfs_dispose_list()
791 for (pii = ivec; nv > 0; pii++, nv--) in nilfs_dispose_list()
792 iput(&(*pii)->vfs_inode); in nilfs_dispose_list()
798 struct nilfs_sc_info *sci = container_of(work, struct nilfs_sc_info, in nilfs_iput_work_func() local
800 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_iput_work_func()
802 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 0); in nilfs_iput_work_func()
810 if (nilfs_mdt_fetch_dirty(root->ifile)) in nilfs_test_metadata_dirty()
812 if (nilfs_mdt_fetch_dirty(nilfs->ns_cpfile)) in nilfs_test_metadata_dirty()
814 if (nilfs_mdt_fetch_dirty(nilfs->ns_sufile)) in nilfs_test_metadata_dirty()
816 if ((ret || nilfs_doing_gc()) && nilfs_mdt_fetch_dirty(nilfs->ns_dat)) in nilfs_test_metadata_dirty()
821 static int nilfs_segctor_clean(struct nilfs_sc_info *sci) in nilfs_segctor_clean() argument
823 return list_empty(&sci->sc_dirty_files) && in nilfs_segctor_clean()
824 !test_bit(NILFS_SC_DIRTY, &sci->sc_flags) && in nilfs_segctor_clean()
825 sci->sc_nfreesegs == 0 && in nilfs_segctor_clean()
826 (!nilfs_doing_gc() || list_empty(&sci->sc_gc_inodes)); in nilfs_segctor_clean()
829 static int nilfs_segctor_confirm(struct nilfs_sc_info *sci) in nilfs_segctor_confirm() argument
831 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_confirm()
834 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) in nilfs_segctor_confirm()
835 set_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_confirm()
837 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_confirm()
838 if (list_empty(&nilfs->ns_dirty_files) && nilfs_segctor_clean(sci)) in nilfs_segctor_confirm()
841 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_confirm()
845 static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci) in nilfs_segctor_clear_metadata_dirty() argument
847 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_clear_metadata_dirty()
849 nilfs_mdt_clear_dirty(sci->sc_root->ifile); in nilfs_segctor_clear_metadata_dirty()
850 nilfs_mdt_clear_dirty(nilfs->ns_cpfile); in nilfs_segctor_clear_metadata_dirty()
851 nilfs_mdt_clear_dirty(nilfs->ns_sufile); in nilfs_segctor_clear_metadata_dirty()
852 nilfs_mdt_clear_dirty(nilfs->ns_dat); in nilfs_segctor_clear_metadata_dirty()
855 static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci) in nilfs_segctor_create_checkpoint() argument
857 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_create_checkpoint()
863 err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, 1, in nilfs_segctor_create_checkpoint()
872 nilfs_mdt_mark_dirty(nilfs->ns_cpfile); in nilfs_segctor_create_checkpoint()
874 nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); in nilfs_segctor_create_checkpoint()
876 WARN_ON(err == -EINVAL || err == -ENOENT); in nilfs_segctor_create_checkpoint()
881 static int nilfs_segctor_fill_in_checkpoint(struct nilfs_sc_info *sci) in nilfs_segctor_fill_in_checkpoint() argument
883 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_fill_in_checkpoint()
888 err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, 0, in nilfs_segctor_fill_in_checkpoint()
891 WARN_ON(err == -EINVAL || err == -ENOENT); in nilfs_segctor_fill_in_checkpoint()
894 raw_cp->cp_snapshot_list.ssl_next = 0; in nilfs_segctor_fill_in_checkpoint()
895 raw_cp->cp_snapshot_list.ssl_prev = 0; in nilfs_segctor_fill_in_checkpoint()
896 raw_cp->cp_inodes_count = in nilfs_segctor_fill_in_checkpoint()
897 cpu_to_le64(atomic64_read(&sci->sc_root->inodes_count)); in nilfs_segctor_fill_in_checkpoint()
898 raw_cp->cp_blocks_count = in nilfs_segctor_fill_in_checkpoint()
899 cpu_to_le64(atomic64_read(&sci->sc_root->blocks_count)); in nilfs_segctor_fill_in_checkpoint()
900 raw_cp->cp_nblk_inc = in nilfs_segctor_fill_in_checkpoint()
901 cpu_to_le64(sci->sc_nblk_inc + sci->sc_nblk_this_inc); in nilfs_segctor_fill_in_checkpoint()
902 raw_cp->cp_create = cpu_to_le64(sci->sc_seg_ctime); in nilfs_segctor_fill_in_checkpoint()
903 raw_cp->cp_cno = cpu_to_le64(nilfs->ns_cno); in nilfs_segctor_fill_in_checkpoint()
905 if (test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags)) in nilfs_segctor_fill_in_checkpoint()
910 nilfs_write_inode_common(sci->sc_root->ifile, in nilfs_segctor_fill_in_checkpoint()
911 &raw_cp->cp_ifile_inode, 1); in nilfs_segctor_fill_in_checkpoint()
912 nilfs_cpfile_put_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); in nilfs_segctor_fill_in_checkpoint()
926 if (test_bit(NILFS_I_BMAP, &ii->i_state)) { in nilfs_fill_in_file_bmap()
927 ibh = ii->i_bh; in nilfs_fill_in_file_bmap()
929 raw_inode = nilfs_ifile_map_inode(ifile, ii->vfs_inode.i_ino, in nilfs_fill_in_file_bmap()
931 nilfs_bmap_write(ii->i_bmap, raw_inode); in nilfs_fill_in_file_bmap()
932 nilfs_ifile_unmap_inode(ifile, ii->vfs_inode.i_ino, ibh); in nilfs_fill_in_file_bmap()
936 static void nilfs_segctor_fill_in_file_bmap(struct nilfs_sc_info *sci) in nilfs_segctor_fill_in_file_bmap() argument
940 list_for_each_entry(ii, &sci->sc_dirty_files, i_dirty) { in nilfs_segctor_fill_in_file_bmap()
941 nilfs_fill_in_file_bmap(sci->sc_root->ifile, ii); in nilfs_segctor_fill_in_file_bmap()
942 set_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_segctor_fill_in_file_bmap()
946 static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci, in nilfs_segctor_fill_in_super_root() argument
953 bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root; in nilfs_segctor_fill_in_super_root()
954 raw_sr = (struct nilfs_super_root *)bh_sr->b_data; in nilfs_segctor_fill_in_super_root()
955 isz = nilfs->ns_inode_size; in nilfs_segctor_fill_in_super_root()
958 raw_sr->sr_bytes = cpu_to_le16(srsz); in nilfs_segctor_fill_in_super_root()
959 raw_sr->sr_nongc_ctime in nilfs_segctor_fill_in_super_root()
961 nilfs->ns_nongc_ctime : sci->sc_seg_ctime); in nilfs_segctor_fill_in_super_root()
962 raw_sr->sr_flags = 0; in nilfs_segctor_fill_in_super_root()
964 nilfs_write_inode_common(nilfs->ns_dat, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
966 nilfs_write_inode_common(nilfs->ns_cpfile, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
968 nilfs_write_inode_common(nilfs->ns_sufile, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
970 memset((void *)raw_sr + srsz, 0, nilfs->ns_blocksize - srsz); in nilfs_segctor_fill_in_super_root()
978 if (test_bit(NILFS_I_COLLECTED, &ii->i_state)) in nilfs_redirty_inodes()
979 clear_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_redirty_inodes()
988 if (!test_and_clear_bit(NILFS_I_COLLECTED, &ii->i_state)) in nilfs_drop_collected_inodes()
991 clear_bit(NILFS_I_INODE_SYNC, &ii->i_state); in nilfs_drop_collected_inodes()
992 set_bit(NILFS_I_UPDATED, &ii->i_state); in nilfs_drop_collected_inodes()
996 static int nilfs_segctor_apply_buffers(struct nilfs_sc_info *sci, in nilfs_segctor_apply_buffers() argument
1008 list_del_init(&bh->b_assoc_buffers); in nilfs_segctor_apply_buffers()
1009 err = collect(sci, bh, inode); in nilfs_segctor_apply_buffers()
1021 list_del_init(&bh->b_assoc_buffers); in nilfs_segctor_apply_buffers()
1027 static size_t nilfs_segctor_buffer_rest(struct nilfs_sc_info *sci) in nilfs_segctor_buffer_rest() argument
1030 return sci->sc_segbuf_nblocks - in nilfs_segctor_buffer_rest()
1031 (sci->sc_nblk_this_inc + sci->sc_curseg->sb_sum.nblocks); in nilfs_segctor_buffer_rest()
1034 static int nilfs_segctor_scan_file(struct nilfs_sc_info *sci, in nilfs_segctor_scan_file() argument
1042 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) { in nilfs_segctor_scan_file()
1043 size_t n, rest = nilfs_segctor_buffer_rest(sci); in nilfs_segctor_scan_file()
1049 sci, inode, &data_buffers, in nilfs_segctor_scan_file()
1050 sc_ops->collect_data); in nilfs_segctor_scan_file()
1051 BUG_ON(!err); /* always receive -E2BIG or true error */ in nilfs_segctor_scan_file()
1057 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) { in nilfs_segctor_scan_file()
1059 sci, inode, &data_buffers, sc_ops->collect_data); in nilfs_segctor_scan_file()
1063 sci, inode, &node_buffers, NULL); in nilfs_segctor_scan_file()
1066 sci->sc_stage.flags |= NILFS_CF_NODE; in nilfs_segctor_scan_file()
1070 sci, inode, &node_buffers, sc_ops->collect_node); in nilfs_segctor_scan_file()
1074 nilfs_bmap_lookup_dirty_buffers(NILFS_I(inode)->i_bmap, &node_buffers); in nilfs_segctor_scan_file()
1076 sci, inode, &node_buffers, sc_ops->collect_bmap); in nilfs_segctor_scan_file()
1080 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_scan_file()
1081 sci->sc_stage.flags &= ~NILFS_CF_NODE; in nilfs_segctor_scan_file()
1087 static int nilfs_segctor_scan_file_dsync(struct nilfs_sc_info *sci, in nilfs_segctor_scan_file_dsync() argument
1091 size_t n, rest = nilfs_segctor_buffer_rest(sci); in nilfs_segctor_scan_file_dsync()
1095 sci->sc_dsync_start, in nilfs_segctor_scan_file_dsync()
1096 sci->sc_dsync_end); in nilfs_segctor_scan_file_dsync()
1098 err = nilfs_segctor_apply_buffers(sci, inode, &data_buffers, in nilfs_segctor_scan_file_dsync()
1101 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_scan_file_dsync()
1103 /* always receive -E2BIG or true error if n > rest */ in nilfs_segctor_scan_file_dsync()
1108 static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_collect_blocks() argument
1110 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_collect_blocks()
1116 switch (nilfs_sc_cstage_get(sci)) { in nilfs_segctor_collect_blocks()
1118 /* Pre-processes */ in nilfs_segctor_collect_blocks()
1119 sci->sc_stage.flags = 0; in nilfs_segctor_collect_blocks()
1121 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) { in nilfs_segctor_collect_blocks()
1122 sci->sc_nblk_inc = 0; in nilfs_segctor_collect_blocks()
1123 sci->sc_curseg->sb_sum.flags = NILFS_SS_LOGBGN; in nilfs_segctor_collect_blocks()
1125 nilfs_sc_cstage_set(sci, NILFS_ST_DSYNC); in nilfs_segctor_collect_blocks()
1130 sci->sc_stage.dirty_file_ptr = NULL; in nilfs_segctor_collect_blocks()
1131 sci->sc_stage.gc_inode_ptr = NULL; in nilfs_segctor_collect_blocks()
1133 nilfs_sc_cstage_set(sci, NILFS_ST_DAT); in nilfs_segctor_collect_blocks()
1136 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1140 head = &sci->sc_gc_inodes; in nilfs_segctor_collect_blocks()
1141 ii = list_prepare_entry(sci->sc_stage.gc_inode_ptr, in nilfs_segctor_collect_blocks()
1145 sci, &ii->vfs_inode, in nilfs_segctor_collect_blocks()
1148 sci->sc_stage.gc_inode_ptr = list_entry( in nilfs_segctor_collect_blocks()
1149 ii->i_dirty.prev, in nilfs_segctor_collect_blocks()
1154 set_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_segctor_collect_blocks()
1156 sci->sc_stage.gc_inode_ptr = NULL; in nilfs_segctor_collect_blocks()
1158 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1161 head = &sci->sc_dirty_files; in nilfs_segctor_collect_blocks()
1162 ii = list_prepare_entry(sci->sc_stage.dirty_file_ptr, head, in nilfs_segctor_collect_blocks()
1165 clear_bit(NILFS_I_DIRTY, &ii->i_state); in nilfs_segctor_collect_blocks()
1167 err = nilfs_segctor_scan_file(sci, &ii->vfs_inode, in nilfs_segctor_collect_blocks()
1170 sci->sc_stage.dirty_file_ptr = in nilfs_segctor_collect_blocks()
1171 list_entry(ii->i_dirty.prev, in nilfs_segctor_collect_blocks()
1176 /* sci->sc_stage.dirty_file_ptr = NILFS_I(inode); */ in nilfs_segctor_collect_blocks()
1179 sci->sc_stage.dirty_file_ptr = NULL; in nilfs_segctor_collect_blocks()
1181 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1184 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1185 sci->sc_stage.flags |= NILFS_CF_IFILE_STARTED; in nilfs_segctor_collect_blocks()
1188 err = nilfs_segctor_scan_file(sci, sci->sc_root->ifile, in nilfs_segctor_collect_blocks()
1192 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1194 err = nilfs_segctor_create_checkpoint(sci); in nilfs_segctor_collect_blocks()
1199 err = nilfs_segctor_scan_file(sci, nilfs->ns_cpfile, in nilfs_segctor_collect_blocks()
1203 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1206 err = nilfs_sufile_freev(nilfs->ns_sufile, sci->sc_freesegs, in nilfs_segctor_collect_blocks()
1207 sci->sc_nfreesegs, &ndone); in nilfs_segctor_collect_blocks()
1209 nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_collect_blocks()
1210 sci->sc_freesegs, ndone, in nilfs_segctor_collect_blocks()
1214 sci->sc_stage.flags |= NILFS_CF_SUFREED; in nilfs_segctor_collect_blocks()
1216 err = nilfs_segctor_scan_file(sci, nilfs->ns_sufile, in nilfs_segctor_collect_blocks()
1220 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1224 err = nilfs_segctor_scan_file(sci, nilfs->ns_dat, in nilfs_segctor_collect_blocks()
1229 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1232 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1237 err = nilfs_segctor_add_super_root(sci); in nilfs_segctor_collect_blocks()
1242 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND; in nilfs_segctor_collect_blocks()
1243 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1247 sci->sc_curseg->sb_sum.flags |= NILFS_SS_SYNDT; in nilfs_segctor_collect_blocks()
1248 ii = sci->sc_dsync_inode; in nilfs_segctor_collect_blocks()
1249 if (!test_bit(NILFS_I_BUSY, &ii->i_state)) in nilfs_segctor_collect_blocks()
1252 err = nilfs_segctor_scan_file_dsync(sci, &ii->vfs_inode); in nilfs_segctor_collect_blocks()
1255 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND; in nilfs_segctor_collect_blocks()
1256 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1269 * nilfs_segctor_begin_construction - setup segment buffer to make a new log
1270 * @sci: nilfs_sc_info
1273 static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci, in nilfs_segctor_begin_construction() argument
1280 segbuf = nilfs_segbuf_new(sci->sc_super); in nilfs_segctor_begin_construction()
1282 return -ENOMEM; in nilfs_segctor_begin_construction()
1284 if (list_empty(&sci->sc_write_logs)) { in nilfs_segctor_begin_construction()
1285 nilfs_segbuf_map(segbuf, nilfs->ns_segnum, in nilfs_segctor_begin_construction()
1286 nilfs->ns_pseg_offset, nilfs); in nilfs_segctor_begin_construction()
1287 if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { in nilfs_segctor_begin_construction()
1289 nilfs_segbuf_map(segbuf, nilfs->ns_segnum, 0, nilfs); in nilfs_segctor_begin_construction()
1292 segbuf->sb_sum.seg_seq = nilfs->ns_seg_seq; in nilfs_segctor_begin_construction()
1293 nextnum = nilfs->ns_nextnum; in nilfs_segctor_begin_construction()
1295 if (nilfs->ns_segnum == nilfs->ns_nextnum) in nilfs_segctor_begin_construction()
1300 prev = NILFS_LAST_SEGBUF(&sci->sc_write_logs); in nilfs_segctor_begin_construction()
1302 segbuf->sb_sum.seg_seq = prev->sb_sum.seg_seq; in nilfs_segctor_begin_construction()
1303 nextnum = prev->sb_nextnum; in nilfs_segctor_begin_construction()
1305 if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { in nilfs_segctor_begin_construction()
1306 nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); in nilfs_segctor_begin_construction()
1307 segbuf->sb_sum.seg_seq++; in nilfs_segctor_begin_construction()
1312 err = nilfs_sufile_mark_dirty(nilfs->ns_sufile, segbuf->sb_segnum); in nilfs_segctor_begin_construction()
1317 err = nilfs_sufile_alloc(nilfs->ns_sufile, &nextnum); in nilfs_segctor_begin_construction()
1323 BUG_ON(!list_empty(&sci->sc_segbufs)); in nilfs_segctor_begin_construction()
1324 list_add_tail(&segbuf->sb_list, &sci->sc_segbufs); in nilfs_segctor_begin_construction()
1325 sci->sc_segbuf_nblocks = segbuf->sb_rest_blocks; in nilfs_segctor_begin_construction()
1333 static int nilfs_segctor_extend_segments(struct nilfs_sc_info *sci, in nilfs_segctor_extend_segments() argument
1337 struct inode *sufile = nilfs->ns_sufile; in nilfs_segctor_extend_segments()
1342 prev = NILFS_LAST_SEGBUF(&sci->sc_segbufs); in nilfs_segctor_extend_segments()
1349 err = nilfs_sufile_mark_dirty(sufile, prev->sb_nextnum); in nilfs_segctor_extend_segments()
1355 err = -ENOMEM; in nilfs_segctor_extend_segments()
1356 segbuf = nilfs_segbuf_new(sci->sc_super); in nilfs_segctor_extend_segments()
1360 /* map this buffer to region of segment on-disk */ in nilfs_segctor_extend_segments()
1361 nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); in nilfs_segctor_extend_segments()
1362 sci->sc_segbuf_nblocks += segbuf->sb_rest_blocks; in nilfs_segctor_extend_segments()
1369 segbuf->sb_sum.seg_seq = prev->sb_sum.seg_seq + 1; in nilfs_segctor_extend_segments()
1372 list_add_tail(&segbuf->sb_list, &list); in nilfs_segctor_extend_segments()
1375 list_splice_tail(&list, &sci->sc_segbufs); in nilfs_segctor_extend_segments()
1382 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_segctor_extend_segments()
1393 struct inode *sufile = nilfs->ns_sufile; in nilfs_free_incomplete_logs()
1397 if (nilfs->ns_nextnum != segbuf->sb_nextnum) { in nilfs_free_incomplete_logs()
1398 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_free_incomplete_logs()
1401 if (atomic_read(&segbuf->sb_err)) { in nilfs_free_incomplete_logs()
1403 if (segbuf->sb_pseg_start != segbuf->sb_fseg_start) in nilfs_free_incomplete_logs()
1408 nilfs_terminate_segment(nilfs, segbuf->sb_fseg_start, in nilfs_free_incomplete_logs()
1409 segbuf->sb_fseg_end); in nilfs_free_incomplete_logs()
1416 if (prev->sb_nextnum != segbuf->sb_nextnum) { in nilfs_free_incomplete_logs()
1417 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_free_incomplete_logs()
1420 if (atomic_read(&segbuf->sb_err) && in nilfs_free_incomplete_logs()
1421 segbuf->sb_segnum != nilfs->ns_nextnum) in nilfs_free_incomplete_logs()
1423 nilfs_sufile_set_error(sufile, segbuf->sb_segnum); in nilfs_free_incomplete_logs()
1428 static void nilfs_segctor_update_segusage(struct nilfs_sc_info *sci, in nilfs_segctor_update_segusage() argument
1435 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_update_segusage()
1436 live_blocks = segbuf->sb_sum.nblocks + in nilfs_segctor_update_segusage()
1437 (segbuf->sb_pseg_start - segbuf->sb_fseg_start); in nilfs_segctor_update_segusage()
1438 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_segctor_update_segusage()
1440 sci->sc_seg_ctime); in nilfs_segctor_update_segusage()
1451 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_cancel_segusage()
1452 segbuf->sb_pseg_start - in nilfs_cancel_segusage()
1453 segbuf->sb_fseg_start, 0); in nilfs_cancel_segusage()
1457 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_cancel_segusage()
1463 static void nilfs_segctor_truncate_segments(struct nilfs_sc_info *sci, in nilfs_segctor_truncate_segments() argument
1470 list_for_each_entry_continue(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_truncate_segments()
1471 sci->sc_segbuf_nblocks -= segbuf->sb_rest_blocks; in nilfs_segctor_truncate_segments()
1472 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_segctor_truncate_segments()
1475 nilfs_truncate_logs(&sci->sc_segbufs, last); in nilfs_segctor_truncate_segments()
1479 static int nilfs_segctor_collect(struct nilfs_sc_info *sci, in nilfs_segctor_collect() argument
1482 struct nilfs_cstage prev_stage = sci->sc_stage; in nilfs_segctor_collect()
1487 sci->sc_nblk_this_inc = 0; in nilfs_segctor_collect()
1488 sci->sc_curseg = NILFS_FIRST_SEGBUF(&sci->sc_segbufs); in nilfs_segctor_collect()
1490 err = nilfs_segctor_reset_segment_buffer(sci); in nilfs_segctor_collect()
1494 err = nilfs_segctor_collect_blocks(sci, mode); in nilfs_segctor_collect()
1495 sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks; in nilfs_segctor_collect()
1499 if (unlikely(err != -E2BIG)) in nilfs_segctor_collect()
1504 nilfs_sc_cstage_get(sci) < NILFS_ST_CPFILE) in nilfs_segctor_collect()
1507 nilfs_clear_logs(&sci->sc_segbufs); in nilfs_segctor_collect()
1509 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { in nilfs_segctor_collect()
1510 err = nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_collect()
1511 sci->sc_freesegs, in nilfs_segctor_collect()
1512 sci->sc_nfreesegs, in nilfs_segctor_collect()
1515 sci->sc_stage.flags &= ~NILFS_CF_SUFREED; in nilfs_segctor_collect()
1518 err = nilfs_segctor_extend_segments(sci, nilfs, nadd); in nilfs_segctor_collect()
1523 sci->sc_stage = prev_stage; in nilfs_segctor_collect()
1525 nilfs_segctor_truncate_segments(sci, sci->sc_curseg, nilfs->ns_sufile); in nilfs_segctor_collect()
1535 BUG_ON(!list_empty(&new_bh->b_assoc_buffers)); in nilfs_list_replace_buffer()
1537 list_replace_init(&old_bh->b_assoc_buffers, &new_bh->b_assoc_buffers); in nilfs_list_replace_buffer()
1542 nilfs_segctor_update_payload_blocknr(struct nilfs_sc_info *sci, in nilfs_segctor_update_payload_blocknr() argument
1548 unsigned long nfinfo = segbuf->sb_sum.nfinfo; in nilfs_segctor_update_payload_blocknr()
1561 blocknr = segbuf->sb_pseg_start + segbuf->sb_sum.nsumblk; in nilfs_segctor_update_payload_blocknr()
1562 ssp.bh = NILFS_SEGBUF_FIRST_BH(&segbuf->sb_segsum_buffers); in nilfs_segctor_update_payload_blocknr()
1565 list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) { in nilfs_segctor_update_payload_blocknr()
1566 if (bh == segbuf->sb_super_root) in nilfs_segctor_update_payload_blocknr()
1570 sci, &ssp, sizeof(*finfo)); in nilfs_segctor_update_payload_blocknr()
1571 ino = le64_to_cpu(finfo->fi_ino); in nilfs_segctor_update_payload_blocknr()
1572 nblocks = le32_to_cpu(finfo->fi_nblocks); in nilfs_segctor_update_payload_blocknr()
1573 ndatablk = le32_to_cpu(finfo->fi_ndatablk); in nilfs_segctor_update_payload_blocknr()
1575 inode = bh->b_page->mapping->host; in nilfs_segctor_update_payload_blocknr()
1586 err = nilfs_bmap_assign(NILFS_I(inode)->i_bmap, &bh, blocknr, in nilfs_segctor_update_payload_blocknr()
1595 sc_op->write_data_binfo(sci, &ssp, &binfo); in nilfs_segctor_update_payload_blocknr()
1597 sc_op->write_node_binfo(sci, &ssp, &binfo); in nilfs_segctor_update_payload_blocknr()
1600 if (--nblocks == 0) { in nilfs_segctor_update_payload_blocknr()
1602 if (--nfinfo == 0) in nilfs_segctor_update_payload_blocknr()
1605 ndatablk--; in nilfs_segctor_update_payload_blocknr()
1614 static int nilfs_segctor_assign(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_assign() argument
1619 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_assign()
1620 err = nilfs_segctor_update_payload_blocknr(sci, segbuf, mode); in nilfs_segctor_assign()
1632 * For split b-tree node pages, this function may be called in nilfs_begin_page_io()
1643 static void nilfs_segctor_prepare_write(struct nilfs_sc_info *sci) in nilfs_segctor_prepare_write() argument
1648 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_prepare_write()
1651 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_segctor_prepare_write()
1653 if (bh->b_page != bd_page) { in nilfs_segctor_prepare_write()
1660 bd_page = bh->b_page; in nilfs_segctor_prepare_write()
1664 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_segctor_prepare_write()
1667 if (bh == segbuf->sb_super_root) { in nilfs_segctor_prepare_write()
1668 if (bh->b_page != bd_page) { in nilfs_segctor_prepare_write()
1673 bd_page = bh->b_page; in nilfs_segctor_prepare_write()
1677 if (bh->b_page != fs_page) { in nilfs_segctor_prepare_write()
1679 fs_page = bh->b_page; in nilfs_segctor_prepare_write()
1692 static int nilfs_segctor_write(struct nilfs_sc_info *sci, in nilfs_segctor_write() argument
1697 ret = nilfs_write_logs(&sci->sc_segbufs, nilfs); in nilfs_segctor_write()
1698 list_splice_tail_init(&sci->sc_segbufs, &sci->sc_write_logs); in nilfs_segctor_write()
1709 * For b-tree node pages, this function may be called twice in nilfs_end_page_io()
1714 * For pages holding split b-tree node buffers, dirty in nilfs_end_page_io()
1750 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_abort_logs()
1752 if (bh->b_page != bd_page) { in nilfs_abort_logs()
1755 bd_page = bh->b_page; in nilfs_abort_logs()
1759 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_abort_logs()
1762 if (bh == segbuf->sb_super_root) { in nilfs_abort_logs()
1763 if (bh->b_page != bd_page) { in nilfs_abort_logs()
1765 bd_page = bh->b_page; in nilfs_abort_logs()
1769 if (bh->b_page != fs_page) { in nilfs_abort_logs()
1771 fs_page = bh->b_page; in nilfs_abort_logs()
1781 static void nilfs_segctor_abort_construction(struct nilfs_sc_info *sci, in nilfs_segctor_abort_construction() argument
1787 list_splice_tail_init(&sci->sc_write_logs, &logs); in nilfs_segctor_abort_construction()
1791 list_splice_tail_init(&sci->sc_segbufs, &logs); in nilfs_segctor_abort_construction()
1792 nilfs_cancel_segusage(&logs, nilfs->ns_sufile); in nilfs_segctor_abort_construction()
1795 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { in nilfs_segctor_abort_construction()
1796 ret = nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_abort_construction()
1797 sci->sc_freesegs, in nilfs_segctor_abort_construction()
1798 sci->sc_nfreesegs, in nilfs_segctor_abort_construction()
1809 nilfs->ns_segnum = segbuf->sb_segnum; in nilfs_set_next_segment()
1810 nilfs->ns_nextnum = segbuf->sb_nextnum; in nilfs_set_next_segment()
1811 nilfs->ns_pseg_offset = segbuf->sb_pseg_start - segbuf->sb_fseg_start in nilfs_set_next_segment()
1812 + segbuf->sb_sum.nblocks; in nilfs_set_next_segment()
1813 nilfs->ns_seg_seq = segbuf->sb_sum.seg_seq; in nilfs_set_next_segment()
1814 nilfs->ns_ctime = segbuf->sb_sum.ctime; in nilfs_set_next_segment()
1817 static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) in nilfs_segctor_complete_write() argument
1821 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_complete_write()
1824 list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) { in nilfs_segctor_complete_write()
1827 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_segctor_complete_write()
1831 if (bh->b_page != bd_page) { in nilfs_segctor_complete_write()
1834 bd_page = bh->b_page; in nilfs_segctor_complete_write()
1841 * identifiable by the discontinuity of bh->b_page in nilfs_segctor_complete_write()
1844 * For B-tree node blocks, however, this assumption is not in nilfs_segctor_complete_write()
1845 * guaranteed. The cleanup code of B-tree node pages needs in nilfs_segctor_complete_write()
1848 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_segctor_complete_write()
1856 set_mask_bits(&bh->b_state, clear_bits, set_bits); in nilfs_segctor_complete_write()
1857 if (bh == segbuf->sb_super_root) { in nilfs_segctor_complete_write()
1858 if (bh->b_page != bd_page) { in nilfs_segctor_complete_write()
1860 bd_page = bh->b_page; in nilfs_segctor_complete_write()
1865 if (bh->b_page != fs_page) { in nilfs_segctor_complete_write()
1867 fs_page = bh->b_page; in nilfs_segctor_complete_write()
1872 if (segbuf->sb_sum.flags & NILFS_SS_LOGBGN) { in nilfs_segctor_complete_write()
1873 set_bit(NILFS_SC_UNCLOSED, &sci->sc_flags); in nilfs_segctor_complete_write()
1874 sci->sc_lseg_stime = jiffies; in nilfs_segctor_complete_write()
1876 if (segbuf->sb_sum.flags & NILFS_SS_LOGEND) in nilfs_segctor_complete_write()
1877 clear_bit(NILFS_SC_UNCLOSED, &sci->sc_flags); in nilfs_segctor_complete_write()
1889 nilfs_drop_collected_inodes(&sci->sc_dirty_files); in nilfs_segctor_complete_write()
1892 nilfs_drop_collected_inodes(&sci->sc_gc_inodes); in nilfs_segctor_complete_write()
1894 nilfs->ns_nongc_ctime = sci->sc_seg_ctime; in nilfs_segctor_complete_write()
1896 sci->sc_nblk_inc += sci->sc_nblk_this_inc; in nilfs_segctor_complete_write()
1898 segbuf = NILFS_LAST_SEGBUF(&sci->sc_write_logs); in nilfs_segctor_complete_write()
1902 nilfs->ns_flushed_device = 0; in nilfs_segctor_complete_write()
1903 nilfs_set_last_segment(nilfs, segbuf->sb_pseg_start, in nilfs_segctor_complete_write()
1904 segbuf->sb_sum.seg_seq, nilfs->ns_cno++); in nilfs_segctor_complete_write()
1906 clear_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); in nilfs_segctor_complete_write()
1907 clear_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_complete_write()
1908 set_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); in nilfs_segctor_complete_write()
1909 nilfs_segctor_clear_metadata_dirty(sci); in nilfs_segctor_complete_write()
1911 clear_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); in nilfs_segctor_complete_write()
1914 static int nilfs_segctor_wait(struct nilfs_sc_info *sci) in nilfs_segctor_wait() argument
1918 ret = nilfs_wait_on_logs(&sci->sc_write_logs); in nilfs_segctor_wait()
1920 nilfs_segctor_complete_write(sci); in nilfs_segctor_wait()
1921 nilfs_destroy_logs(&sci->sc_write_logs); in nilfs_segctor_wait()
1926 static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci, in nilfs_segctor_collect_dirty_files() argument
1930 struct inode *ifile = sci->sc_root->ifile; in nilfs_segctor_collect_dirty_files()
1932 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1934 list_for_each_entry_safe(ii, n, &nilfs->ns_dirty_files, i_dirty) { in nilfs_segctor_collect_dirty_files()
1935 if (!ii->i_bh) { in nilfs_segctor_collect_dirty_files()
1939 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1941 ifile, ii->vfs_inode.i_ino, &ibh); in nilfs_segctor_collect_dirty_files()
1943 nilfs_warn(sci->sc_super, in nilfs_segctor_collect_dirty_files()
1945 err, ii->vfs_inode.i_ino); in nilfs_segctor_collect_dirty_files()
1948 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1949 if (likely(!ii->i_bh)) in nilfs_segctor_collect_dirty_files()
1950 ii->i_bh = ibh; in nilfs_segctor_collect_dirty_files()
1957 mark_buffer_dirty(ii->i_bh); in nilfs_segctor_collect_dirty_files()
1960 clear_bit(NILFS_I_QUEUED, &ii->i_state); in nilfs_segctor_collect_dirty_files()
1961 set_bit(NILFS_I_BUSY, &ii->i_state); in nilfs_segctor_collect_dirty_files()
1962 list_move_tail(&ii->i_dirty, &sci->sc_dirty_files); in nilfs_segctor_collect_dirty_files()
1964 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
1969 static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci, in nilfs_segctor_drop_written_files() argument
1973 int during_mount = !(sci->sc_super->s_flags & SB_ACTIVE); in nilfs_segctor_drop_written_files()
1976 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
1977 list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) { in nilfs_segctor_drop_written_files()
1978 if (!test_and_clear_bit(NILFS_I_UPDATED, &ii->i_state) || in nilfs_segctor_drop_written_files()
1979 test_bit(NILFS_I_DIRTY, &ii->i_state)) in nilfs_segctor_drop_written_files()
1982 clear_bit(NILFS_I_BUSY, &ii->i_state); in nilfs_segctor_drop_written_files()
1983 brelse(ii->i_bh); in nilfs_segctor_drop_written_files()
1984 ii->i_bh = NULL; in nilfs_segctor_drop_written_files()
1985 list_del_init(&ii->i_dirty); in nilfs_segctor_drop_written_files()
1986 if (!ii->vfs_inode.i_nlink || during_mount) { in nilfs_segctor_drop_written_files()
1991 list_add_tail(&ii->i_dirty, &sci->sc_iput_queue); in nilfs_segctor_drop_written_files()
1994 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
1995 iput(&ii->vfs_inode); in nilfs_segctor_drop_written_files()
1996 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
1999 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2002 schedule_work(&sci->sc_iput_work); in nilfs_segctor_drop_written_files()
2008 static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_do_construct() argument
2010 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_do_construct()
2013 nilfs_sc_cstage_set(sci, NILFS_ST_INIT); in nilfs_segctor_do_construct()
2014 sci->sc_cno = nilfs->ns_cno; in nilfs_segctor_do_construct()
2016 err = nilfs_segctor_collect_dirty_files(sci, nilfs); in nilfs_segctor_do_construct()
2020 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) in nilfs_segctor_do_construct()
2021 set_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_do_construct()
2023 if (nilfs_segctor_clean(sci)) in nilfs_segctor_do_construct()
2027 sci->sc_stage.flags &= ~NILFS_CF_HISTORY_MASK; in nilfs_segctor_do_construct()
2029 err = nilfs_segctor_begin_construction(sci, nilfs); in nilfs_segctor_do_construct()
2034 sci->sc_seg_ctime = ktime_get_real_seconds(); in nilfs_segctor_do_construct()
2036 err = nilfs_segctor_collect(sci, nilfs, mode); in nilfs_segctor_do_construct()
2041 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE && in nilfs_segctor_do_construct()
2042 nilfs_segbuf_empty(sci->sc_curseg)) { in nilfs_segctor_do_construct()
2043 nilfs_segctor_abort_construction(sci, nilfs, 1); in nilfs_segctor_do_construct()
2047 err = nilfs_segctor_assign(sci, mode); in nilfs_segctor_do_construct()
2051 if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) in nilfs_segctor_do_construct()
2052 nilfs_segctor_fill_in_file_bmap(sci); in nilfs_segctor_do_construct()
2055 nilfs_sc_cstage_get(sci) >= NILFS_ST_CPFILE) { in nilfs_segctor_do_construct()
2056 err = nilfs_segctor_fill_in_checkpoint(sci); in nilfs_segctor_do_construct()
2060 nilfs_segctor_fill_in_super_root(sci, nilfs); in nilfs_segctor_do_construct()
2062 nilfs_segctor_update_segusage(sci, nilfs->ns_sufile); in nilfs_segctor_do_construct()
2065 nilfs_segctor_prepare_write(sci); in nilfs_segctor_do_construct()
2067 nilfs_add_checksums_on_logs(&sci->sc_segbufs, in nilfs_segctor_do_construct()
2068 nilfs->ns_crc_seed); in nilfs_segctor_do_construct()
2070 err = nilfs_segctor_write(sci, nilfs); in nilfs_segctor_do_construct()
2074 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE || in nilfs_segctor_do_construct()
2075 nilfs->ns_blocksize_bits != PAGE_SHIFT) { in nilfs_segctor_do_construct()
2083 err = nilfs_segctor_wait(sci); in nilfs_segctor_do_construct()
2087 } while (nilfs_sc_cstage_get(sci) != NILFS_ST_DONE); in nilfs_segctor_do_construct()
2090 nilfs_segctor_drop_written_files(sci, nilfs); in nilfs_segctor_do_construct()
2094 if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) in nilfs_segctor_do_construct()
2095 nilfs_redirty_inodes(&sci->sc_dirty_files); in nilfs_segctor_do_construct()
2099 nilfs_redirty_inodes(&sci->sc_gc_inodes); in nilfs_segctor_do_construct()
2100 nilfs_segctor_abort_construction(sci, nilfs, err); in nilfs_segctor_do_construct()
2105 * nilfs_segctor_start_timer - set timer of background write
2106 * @sci: nilfs_sc_info
2112 static void nilfs_segctor_start_timer(struct nilfs_sc_info *sci) in nilfs_segctor_start_timer() argument
2114 spin_lock(&sci->sc_state_lock); in nilfs_segctor_start_timer()
2115 if (!(sci->sc_state & NILFS_SEGCTOR_COMMIT)) { in nilfs_segctor_start_timer()
2116 sci->sc_timer.expires = jiffies + sci->sc_interval; in nilfs_segctor_start_timer()
2117 add_timer(&sci->sc_timer); in nilfs_segctor_start_timer()
2118 sci->sc_state |= NILFS_SEGCTOR_COMMIT; in nilfs_segctor_start_timer()
2120 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_start_timer()
2123 static void nilfs_segctor_do_flush(struct nilfs_sc_info *sci, int bn) in nilfs_segctor_do_flush() argument
2125 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_flush()
2126 if (!(sci->sc_flush_request & BIT(bn))) { in nilfs_segctor_do_flush()
2127 unsigned long prev_req = sci->sc_flush_request; in nilfs_segctor_do_flush()
2129 sci->sc_flush_request |= BIT(bn); in nilfs_segctor_do_flush()
2131 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_do_flush()
2133 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_flush()
2137 * nilfs_flush_segment - trigger a segment construction for resource control
2143 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_flush_segment()
2144 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_flush_segment() local
2146 if (!sci || nilfs_doing_construction()) in nilfs_flush_segment()
2148 nilfs_segctor_do_flush(sci, NILFS_MDT_INODE(sb, ino) ? ino : 0); in nilfs_flush_segment()
2159 static int nilfs_segctor_sync(struct nilfs_sc_info *sci) in nilfs_segctor_sync() argument
2164 spin_lock(&sci->sc_state_lock); in nilfs_segctor_sync()
2168 wait_req.seq = ++sci->sc_seq_request; in nilfs_segctor_sync()
2169 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_sync()
2172 add_wait_queue(&sci->sc_wait_request, &wait_req.wq); in nilfs_segctor_sync()
2174 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_sync()
2185 err = -ERESTARTSYS; in nilfs_segctor_sync()
2188 finish_wait(&sci->sc_wait_request, &wait_req.wq); in nilfs_segctor_sync()
2192 static void nilfs_segctor_wakeup(struct nilfs_sc_info *sci, int err) in nilfs_segctor_wakeup() argument
2197 spin_lock_irqsave(&sci->sc_wait_request.lock, flags); in nilfs_segctor_wakeup()
2198 list_for_each_entry_safe(wrq, n, &sci->sc_wait_request.head, wq.entry) { in nilfs_segctor_wakeup()
2199 if (!atomic_read(&wrq->done) && in nilfs_segctor_wakeup()
2200 nilfs_cnt32_ge(sci->sc_seq_done, wrq->seq)) { in nilfs_segctor_wakeup()
2201 wrq->err = err; in nilfs_segctor_wakeup()
2202 atomic_set(&wrq->done, 1); in nilfs_segctor_wakeup()
2204 if (atomic_read(&wrq->done)) { in nilfs_segctor_wakeup()
2205 wrq->wq.func(&wrq->wq, in nilfs_segctor_wakeup()
2210 spin_unlock_irqrestore(&sci->sc_wait_request.lock, flags); in nilfs_segctor_wakeup()
2214 * nilfs_construct_segment - construct a logical segment
2220 * %-EROFS - Read only filesystem.
2222 * %-EIO - I/O error
2224 * %-ENOSPC - No space left on device (only in a panic state).
2226 * %-ERESTARTSYS - Interrupted.
2228 * %-ENOMEM - Insufficient memory available.
2232 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_construct_segment()
2233 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_construct_segment() local
2234 struct nilfs_transaction_info *ti; in nilfs_construct_segment() local
2237 if (!sci) in nilfs_construct_segment()
2238 return -EROFS; in nilfs_construct_segment()
2241 BUG_ON((ti = current->journal_info) && ti->ti_magic == NILFS_TI_MAGIC); in nilfs_construct_segment()
2243 err = nilfs_segctor_sync(sci); in nilfs_construct_segment()
2248 * nilfs_construct_dsync_segment - construct a data-only logical segment
2257 * %-EROFS - Read only filesystem.
2259 * %-EIO - I/O error
2261 * %-ENOSPC - No space left on device (only in a panic state).
2263 * %-ERESTARTSYS - Interrupted.
2265 * %-ENOMEM - Insufficient memory available.
2270 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_construct_dsync_segment()
2271 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_construct_dsync_segment() local
2273 struct nilfs_transaction_info ti; in nilfs_construct_dsync_segment() local
2276 if (!sci) in nilfs_construct_dsync_segment()
2277 return -EROFS; in nilfs_construct_dsync_segment()
2279 nilfs_transaction_lock(sb, &ti, 0); in nilfs_construct_dsync_segment()
2282 if (test_bit(NILFS_I_INODE_SYNC, &ii->i_state) || in nilfs_construct_dsync_segment()
2284 test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || in nilfs_construct_dsync_segment()
2287 err = nilfs_segctor_sync(sci); in nilfs_construct_dsync_segment()
2291 spin_lock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2292 if (!test_bit(NILFS_I_QUEUED, &ii->i_state) && in nilfs_construct_dsync_segment()
2293 !test_bit(NILFS_I_BUSY, &ii->i_state)) { in nilfs_construct_dsync_segment()
2294 spin_unlock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2298 spin_unlock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2299 sci->sc_dsync_inode = ii; in nilfs_construct_dsync_segment()
2300 sci->sc_dsync_start = start; in nilfs_construct_dsync_segment()
2301 sci->sc_dsync_end = end; in nilfs_construct_dsync_segment()
2303 err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC); in nilfs_construct_dsync_segment()
2305 nilfs->ns_flushed_device = 0; in nilfs_construct_dsync_segment()
2315 * nilfs_segctor_accept - record accepted sequence count of log-write requests
2316 * @sci: segment constructor object
2318 static void nilfs_segctor_accept(struct nilfs_sc_info *sci) in nilfs_segctor_accept() argument
2320 spin_lock(&sci->sc_state_lock); in nilfs_segctor_accept()
2321 sci->sc_seq_accepted = sci->sc_seq_request; in nilfs_segctor_accept()
2322 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_accept()
2323 del_timer_sync(&sci->sc_timer); in nilfs_segctor_accept()
2327 * nilfs_segctor_notify - notify the result of request to caller threads
2328 * @sci: segment constructor object
2332 static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err) in nilfs_segctor_notify() argument
2335 spin_lock(&sci->sc_state_lock); in nilfs_segctor_notify()
2338 sci->sc_state &= ~NILFS_SEGCTOR_COMMIT; in nilfs_segctor_notify()
2339 sci->sc_seq_done = sci->sc_seq_accepted; in nilfs_segctor_notify()
2340 nilfs_segctor_wakeup(sci, err); in nilfs_segctor_notify()
2341 sci->sc_flush_request = 0; in nilfs_segctor_notify()
2344 sci->sc_flush_request &= ~FLUSH_FILE_BIT; in nilfs_segctor_notify()
2346 sci->sc_flush_request &= ~FLUSH_DAT_BIT; in nilfs_segctor_notify()
2348 /* re-enable timer if checkpoint creation was not done */ in nilfs_segctor_notify()
2349 if ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && in nilfs_segctor_notify()
2350 time_before(jiffies, sci->sc_timer.expires)) in nilfs_segctor_notify()
2351 add_timer(&sci->sc_timer); in nilfs_segctor_notify()
2353 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_notify()
2357 * nilfs_segctor_construct - form logs and write them to disk
2358 * @sci: segment constructor object
2361 static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_construct() argument
2363 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_construct()
2367 nilfs_segctor_accept(sci); in nilfs_segctor_construct()
2371 if (!nilfs_segctor_confirm(sci)) in nilfs_segctor_construct()
2372 err = nilfs_segctor_do_construct(sci, mode); in nilfs_segctor_construct()
2376 atomic_set(&nilfs->ns_ndirtyblks, 0); in nilfs_segctor_construct()
2377 if (test_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags) && in nilfs_segctor_construct()
2379 down_write(&nilfs->ns_sem); in nilfs_segctor_construct()
2380 err = -EIO; in nilfs_segctor_construct()
2381 sbp = nilfs_prepare_super(sci->sc_super, in nilfs_segctor_construct()
2385 err = nilfs_commit_super(sci->sc_super, in nilfs_segctor_construct()
2388 up_write(&nilfs->ns_sem); in nilfs_segctor_construct()
2392 nilfs_segctor_notify(sci, mode, err); in nilfs_segctor_construct()
2398 struct nilfs_sc_info *sci = from_timer(sci, t, sc_timer); in nilfs_construction_timeout() local
2400 wake_up_process(sci->sc_timer_task); in nilfs_construction_timeout()
2409 if (!test_bit(NILFS_I_UPDATED, &ii->i_state)) in nilfs_remove_written_gcinodes()
2411 list_del_init(&ii->i_dirty); in nilfs_remove_written_gcinodes()
2412 truncate_inode_pages(&ii->vfs_inode.i_data, 0); in nilfs_remove_written_gcinodes()
2413 nilfs_btnode_cache_clear(&ii->i_btnode_cache); in nilfs_remove_written_gcinodes()
2414 iput(&ii->vfs_inode); in nilfs_remove_written_gcinodes()
2421 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_clean_segments()
2422 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_clean_segments() local
2423 struct nilfs_transaction_info ti; in nilfs_clean_segments() local
2426 if (unlikely(!sci)) in nilfs_clean_segments()
2427 return -EROFS; in nilfs_clean_segments()
2429 nilfs_transaction_lock(sb, &ti, 1); in nilfs_clean_segments()
2431 err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2437 nilfs_mdt_restore_from_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2441 sci->sc_freesegs = kbufs[4]; in nilfs_clean_segments()
2442 sci->sc_nfreesegs = argv[4].v_nmembs; in nilfs_clean_segments()
2443 list_splice_tail_init(&nilfs->ns_gc_inodes, &sci->sc_gc_inodes); in nilfs_clean_segments()
2446 err = nilfs_segctor_construct(sci, SC_LSEG_SR); in nilfs_clean_segments()
2447 nilfs_remove_written_gcinodes(nilfs, &sci->sc_gc_inodes); in nilfs_clean_segments()
2454 schedule_timeout(sci->sc_interval); in nilfs_clean_segments()
2457 int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs, in nilfs_clean_segments()
2458 sci->sc_nfreesegs); in nilfs_clean_segments()
2468 sci->sc_freesegs = NULL; in nilfs_clean_segments()
2469 sci->sc_nfreesegs = 0; in nilfs_clean_segments()
2470 nilfs_mdt_clear_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2475 static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_thread_construct() argument
2477 struct nilfs_transaction_info ti; in nilfs_segctor_thread_construct() local
2479 nilfs_transaction_lock(sci->sc_super, &ti, 0); in nilfs_segctor_thread_construct()
2480 nilfs_segctor_construct(sci, mode); in nilfs_segctor_thread_construct()
2487 if (test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) in nilfs_segctor_thread_construct()
2488 nilfs_segctor_start_timer(sci); in nilfs_segctor_thread_construct()
2490 nilfs_transaction_unlock(sci->sc_super); in nilfs_segctor_thread_construct()
2493 static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci) in nilfs_segctor_do_immediate_flush() argument
2497 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2498 mode = (sci->sc_flush_request & FLUSH_DAT_BIT) ? in nilfs_segctor_do_immediate_flush()
2500 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2503 nilfs_segctor_do_construct(sci, mode); in nilfs_segctor_do_immediate_flush()
2505 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2506 sci->sc_flush_request &= (mode == SC_FLUSH_FILE) ? in nilfs_segctor_do_immediate_flush()
2508 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2510 clear_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags); in nilfs_segctor_do_immediate_flush()
2513 static int nilfs_segctor_flush_mode(struct nilfs_sc_info *sci) in nilfs_segctor_flush_mode() argument
2515 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || in nilfs_segctor_flush_mode()
2516 time_before(jiffies, sci->sc_lseg_stime + sci->sc_mjcp_freq)) { in nilfs_segctor_flush_mode()
2517 if (!(sci->sc_flush_request & ~FLUSH_FILE_BIT)) in nilfs_segctor_flush_mode()
2519 else if (!(sci->sc_flush_request & ~FLUSH_DAT_BIT)) in nilfs_segctor_flush_mode()
2526 * nilfs_segctor_thread - main loop of the segment constructor thread.
2534 struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg; in nilfs_segctor_thread() local
2535 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_thread()
2538 sci->sc_timer_task = current; in nilfs_segctor_thread()
2541 sci->sc_task = current; in nilfs_segctor_thread()
2542 wake_up(&sci->sc_wait_task); /* for nilfs_segctor_start_thread() */ in nilfs_segctor_thread()
2543 nilfs_info(sci->sc_super, in nilfs_segctor_thread()
2545 sci->sc_interval / HZ, sci->sc_mjcp_freq / HZ); in nilfs_segctor_thread()
2547 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2552 if (sci->sc_state & NILFS_SEGCTOR_QUIT) in nilfs_segctor_thread()
2555 if (timeout || sci->sc_seq_request != sci->sc_seq_done) in nilfs_segctor_thread()
2557 else if (sci->sc_flush_request) in nilfs_segctor_thread()
2558 mode = nilfs_segctor_flush_mode(sci); in nilfs_segctor_thread()
2562 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2563 nilfs_segctor_thread_construct(sci, mode); in nilfs_segctor_thread()
2564 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2570 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2572 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2577 prepare_to_wait(&sci->sc_wait_daemon, &wait, in nilfs_segctor_thread()
2580 if (sci->sc_seq_request != sci->sc_seq_done) in nilfs_segctor_thread()
2582 else if (sci->sc_flush_request) in nilfs_segctor_thread()
2584 else if (sci->sc_state & NILFS_SEGCTOR_COMMIT) in nilfs_segctor_thread()
2586 sci->sc_timer.expires); in nilfs_segctor_thread()
2589 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2591 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2593 finish_wait(&sci->sc_wait_daemon, &wait); in nilfs_segctor_thread()
2594 timeout = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && in nilfs_segctor_thread()
2595 time_after_eq(jiffies, sci->sc_timer.expires)); in nilfs_segctor_thread()
2603 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2606 sci->sc_task = NULL; in nilfs_segctor_thread()
2607 wake_up(&sci->sc_wait_task); /* for nilfs_segctor_kill_thread() */ in nilfs_segctor_thread()
2611 static int nilfs_segctor_start_thread(struct nilfs_sc_info *sci) in nilfs_segctor_start_thread() argument
2615 t = kthread_run(nilfs_segctor_thread, sci, "segctord"); in nilfs_segctor_start_thread()
2619 nilfs_err(sci->sc_super, "error %d creating segctord thread", in nilfs_segctor_start_thread()
2623 wait_event(sci->sc_wait_task, sci->sc_task != NULL); in nilfs_segctor_start_thread()
2627 static void nilfs_segctor_kill_thread(struct nilfs_sc_info *sci) in nilfs_segctor_kill_thread() argument
2628 __acquires(&sci->sc_state_lock) in nilfs_segctor_kill_thread()
2629 __releases(&sci->sc_state_lock) in nilfs_segctor_kill_thread()
2631 sci->sc_state |= NILFS_SEGCTOR_QUIT; in nilfs_segctor_kill_thread()
2633 while (sci->sc_task) { in nilfs_segctor_kill_thread()
2634 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_kill_thread()
2635 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_kill_thread()
2636 wait_event(sci->sc_wait_task, sci->sc_task == NULL); in nilfs_segctor_kill_thread()
2637 spin_lock(&sci->sc_state_lock); in nilfs_segctor_kill_thread()
2642 * Setup & clean-up functions
2647 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_segctor_new()
2648 struct nilfs_sc_info *sci; in nilfs_segctor_new() local
2650 sci = kzalloc(sizeof(*sci), GFP_KERNEL); in nilfs_segctor_new()
2651 if (!sci) in nilfs_segctor_new()
2654 sci->sc_super = sb; in nilfs_segctor_new()
2657 sci->sc_root = root; in nilfs_segctor_new()
2659 init_waitqueue_head(&sci->sc_wait_request); in nilfs_segctor_new()
2660 init_waitqueue_head(&sci->sc_wait_daemon); in nilfs_segctor_new()
2661 init_waitqueue_head(&sci->sc_wait_task); in nilfs_segctor_new()
2662 spin_lock_init(&sci->sc_state_lock); in nilfs_segctor_new()
2663 INIT_LIST_HEAD(&sci->sc_dirty_files); in nilfs_segctor_new()
2664 INIT_LIST_HEAD(&sci->sc_segbufs); in nilfs_segctor_new()
2665 INIT_LIST_HEAD(&sci->sc_write_logs); in nilfs_segctor_new()
2666 INIT_LIST_HEAD(&sci->sc_gc_inodes); in nilfs_segctor_new()
2667 INIT_LIST_HEAD(&sci->sc_iput_queue); in nilfs_segctor_new()
2668 INIT_WORK(&sci->sc_iput_work, nilfs_iput_work_func); in nilfs_segctor_new()
2669 timer_setup(&sci->sc_timer, nilfs_construction_timeout, 0); in nilfs_segctor_new()
2671 sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT; in nilfs_segctor_new()
2672 sci->sc_mjcp_freq = HZ * NILFS_SC_DEFAULT_SR_FREQ; in nilfs_segctor_new()
2673 sci->sc_watermark = NILFS_SC_DEFAULT_WATERMARK; in nilfs_segctor_new()
2675 if (nilfs->ns_interval) in nilfs_segctor_new()
2676 sci->sc_interval = HZ * nilfs->ns_interval; in nilfs_segctor_new()
2677 if (nilfs->ns_watermark) in nilfs_segctor_new()
2678 sci->sc_watermark = nilfs->ns_watermark; in nilfs_segctor_new()
2679 return sci; in nilfs_segctor_new()
2682 static void nilfs_segctor_write_out(struct nilfs_sc_info *sci) in nilfs_segctor_write_out() argument
2691 struct nilfs_transaction_info ti; in nilfs_segctor_write_out() local
2693 nilfs_transaction_lock(sci->sc_super, &ti, 0); in nilfs_segctor_write_out()
2694 ret = nilfs_segctor_construct(sci, SC_LSEG_SR); in nilfs_segctor_write_out()
2695 nilfs_transaction_unlock(sci->sc_super); in nilfs_segctor_write_out()
2697 flush_work(&sci->sc_iput_work); in nilfs_segctor_write_out()
2699 } while (ret && retrycount-- > 0); in nilfs_segctor_write_out()
2703 * nilfs_segctor_destroy - destroy the segment constructor.
2704 * @sci: nilfs_sc_info
2710 static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) in nilfs_segctor_destroy() argument
2712 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_destroy()
2715 up_write(&nilfs->ns_segctor_sem); in nilfs_segctor_destroy()
2717 spin_lock(&sci->sc_state_lock); in nilfs_segctor_destroy()
2718 nilfs_segctor_kill_thread(sci); in nilfs_segctor_destroy()
2719 flag = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) || sci->sc_flush_request in nilfs_segctor_destroy()
2720 || sci->sc_seq_request != sci->sc_seq_done); in nilfs_segctor_destroy()
2721 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_destroy()
2723 if (flush_work(&sci->sc_iput_work)) in nilfs_segctor_destroy()
2726 if (flag || !nilfs_segctor_confirm(sci)) in nilfs_segctor_destroy()
2727 nilfs_segctor_write_out(sci); in nilfs_segctor_destroy()
2729 if (!list_empty(&sci->sc_dirty_files)) { in nilfs_segctor_destroy()
2730 nilfs_warn(sci->sc_super, in nilfs_segctor_destroy()
2732 nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1); in nilfs_segctor_destroy()
2735 if (!list_empty(&sci->sc_iput_queue)) { in nilfs_segctor_destroy()
2736 nilfs_warn(sci->sc_super, in nilfs_segctor_destroy()
2738 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 1); in nilfs_segctor_destroy()
2741 WARN_ON(!list_empty(&sci->sc_segbufs)); in nilfs_segctor_destroy()
2742 WARN_ON(!list_empty(&sci->sc_write_logs)); in nilfs_segctor_destroy()
2744 nilfs_put_root(sci->sc_root); in nilfs_segctor_destroy()
2746 down_write(&nilfs->ns_segctor_sem); in nilfs_segctor_destroy()
2748 del_timer_sync(&sci->sc_timer); in nilfs_segctor_destroy()
2749 kfree(sci); in nilfs_segctor_destroy()
2753 * nilfs_attach_log_writer - attach log writer
2763 * %-ENOMEM - Insufficient memory available.
2767 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_attach_log_writer()
2770 if (nilfs->ns_writer) { in nilfs_attach_log_writer()
2774 * read-only mount. in nilfs_attach_log_writer()
2779 nilfs->ns_writer = nilfs_segctor_new(sb, root); in nilfs_attach_log_writer()
2780 if (!nilfs->ns_writer) in nilfs_attach_log_writer()
2781 return -ENOMEM; in nilfs_attach_log_writer()
2783 inode_attach_wb(nilfs->ns_bdev->bd_inode, NULL); in nilfs_attach_log_writer()
2785 err = nilfs_segctor_start_thread(nilfs->ns_writer); in nilfs_attach_log_writer()
2787 kfree(nilfs->ns_writer); in nilfs_attach_log_writer()
2788 nilfs->ns_writer = NULL; in nilfs_attach_log_writer()
2794 * nilfs_detach_log_writer - destroy log writer
2802 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_detach_log_writer()
2805 down_write(&nilfs->ns_segctor_sem); in nilfs_detach_log_writer()
2806 if (nilfs->ns_writer) { in nilfs_detach_log_writer()
2807 nilfs_segctor_destroy(nilfs->ns_writer); in nilfs_detach_log_writer()
2808 nilfs->ns_writer = NULL; in nilfs_detach_log_writer()
2812 spin_lock(&nilfs->ns_inode_lock); in nilfs_detach_log_writer()
2813 if (!list_empty(&nilfs->ns_dirty_files)) { in nilfs_detach_log_writer()
2814 list_splice_init(&nilfs->ns_dirty_files, &garbage_list); in nilfs_detach_log_writer()
2818 spin_unlock(&nilfs->ns_inode_lock); in nilfs_detach_log_writer()
2819 up_write(&nilfs->ns_segctor_sem); in nilfs_detach_log_writer()