Lines Matching +full:ti +full:- +full:sci
1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
18 #include <linux/backing-dev.h>
82 * wrapper functions of stage count (nilfs_sc_info->sc_stage.scnt). Users of
90 static inline void nilfs_sc_cstage_inc(struct nilfs_sc_info *sci) in nilfs_sc_cstage_inc() argument
92 sci->sc_stage.scnt++; in nilfs_sc_cstage_inc()
93 trace_nilfs2_collection_stage_transition(sci); in nilfs_sc_cstage_inc()
96 static inline void nilfs_sc_cstage_set(struct nilfs_sc_info *sci, int next_scnt) in nilfs_sc_cstage_set() argument
98 sci->sc_stage.scnt = next_scnt; in nilfs_sc_cstage_set()
99 trace_nilfs2_collection_stage_transition(sci); in nilfs_sc_cstage_set()
102 static inline int nilfs_sc_cstage_get(struct nilfs_sc_info *sci) in nilfs_sc_cstage_get() argument
104 return sci->sc_stage.scnt; in nilfs_sc_cstage_get()
139 ((__s32)((a) - (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
196 * * %-ENOMEM - Insufficient memory available.
197 * * %-ENOSPC - No space left on device (if checking free space).
200 struct nilfs_transaction_info *ti, in nilfs_transaction_begin() argument
204 int ret = nilfs_prepare_segment_lock(sb, ti); in nilfs_transaction_begin()
210 trace_ti = current->journal_info; in nilfs_transaction_begin()
213 trace_ti->ti_count, trace_ti->ti_flags, in nilfs_transaction_begin()
220 nilfs = sb->s_fs_info; in nilfs_transaction_begin()
221 down_read(&nilfs->ns_segctor_sem); in nilfs_transaction_begin()
223 up_read(&nilfs->ns_segctor_sem); in nilfs_transaction_begin()
224 ret = -ENOSPC; in nilfs_transaction_begin()
228 trace_ti = current->journal_info; in nilfs_transaction_begin()
229 trace_nilfs2_transaction_transition(sb, trace_ti, trace_ti->ti_count, in nilfs_transaction_begin()
230 trace_ti->ti_flags, in nilfs_transaction_begin()
235 ti = current->journal_info; in nilfs_transaction_begin()
236 current->journal_info = ti->ti_save; in nilfs_transaction_begin()
237 if (ti->ti_flags & NILFS_TI_DYNAMIC_ALLOC) in nilfs_transaction_begin()
238 kmem_cache_free(nilfs_transaction_cachep, ti); in nilfs_transaction_begin()
244 * 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 (sb_rdonly(sb) || unlikely(!sci) || !sci->sc_flush_request) in nilfs_relax_pressure_in_lock()
323 set_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags); in nilfs_relax_pressure_in_lock()
324 up_read(&nilfs->ns_segctor_sem); in nilfs_relax_pressure_in_lock()
326 down_write(&nilfs->ns_segctor_sem); in nilfs_relax_pressure_in_lock()
327 if (sci->sc_flush_request && in nilfs_relax_pressure_in_lock()
328 test_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags)) { in nilfs_relax_pressure_in_lock()
329 struct nilfs_transaction_info *ti = current->journal_info; in nilfs_relax_pressure_in_lock() 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
413 static int nilfs_segctor_reset_segment_buffer(struct nilfs_sc_info *sci) in nilfs_segctor_reset_segment_buffer() argument
415 struct nilfs_segment_buffer *segbuf = sci->sc_curseg; in nilfs_segctor_reset_segment_buffer()
423 err = nilfs_segbuf_reset(segbuf, flags, sci->sc_seg_ctime, sci->sc_cno); in nilfs_segctor_reset_segment_buffer()
427 sumbh = NILFS_SEGBUF_FIRST_BH(&segbuf->sb_segsum_buffers); in nilfs_segctor_reset_segment_buffer()
428 sumbytes = segbuf->sb_sum.sumbytes; in nilfs_segctor_reset_segment_buffer()
429 sci->sc_finfo_ptr.bh = sumbh; sci->sc_finfo_ptr.offset = sumbytes; in nilfs_segctor_reset_segment_buffer()
430 sci->sc_binfo_ptr.bh = sumbh; sci->sc_binfo_ptr.offset = sumbytes; in nilfs_segctor_reset_segment_buffer()
431 sci->sc_blk_cnt = sci->sc_datablk_cnt = 0; in nilfs_segctor_reset_segment_buffer()
436 * nilfs_segctor_zeropad_segsum - zero pad the rest of the segment summary area
437 * @sci: segment constructor object
439 * nilfs_segctor_zeropad_segsum() zero-fills unallocated space at the end of
442 static void nilfs_segctor_zeropad_segsum(struct nilfs_sc_info *sci) in nilfs_segctor_zeropad_segsum() argument
446 ssp = sci->sc_blk_cnt > 0 ? &sci->sc_binfo_ptr : &sci->sc_finfo_ptr; in nilfs_segctor_zeropad_segsum()
447 if (ssp->offset < ssp->bh->b_size) in nilfs_segctor_zeropad_segsum()
448 memset(ssp->bh->b_data + ssp->offset, 0, in nilfs_segctor_zeropad_segsum()
449 ssp->bh->b_size - ssp->offset); in nilfs_segctor_zeropad_segsum()
452 static int nilfs_segctor_feed_segment(struct nilfs_sc_info *sci) in nilfs_segctor_feed_segment() argument
454 sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks; in nilfs_segctor_feed_segment()
455 if (NILFS_SEGBUF_IS_LAST(sci->sc_curseg, &sci->sc_segbufs)) in nilfs_segctor_feed_segment()
456 return -E2BIG; /* in nilfs_segctor_feed_segment()
460 nilfs_segctor_zeropad_segsum(sci); in nilfs_segctor_feed_segment()
461 sci->sc_curseg = NILFS_NEXT_SEGBUF(sci->sc_curseg); in nilfs_segctor_feed_segment()
462 return nilfs_segctor_reset_segment_buffer(sci); in nilfs_segctor_feed_segment()
465 static int nilfs_segctor_add_super_root(struct nilfs_sc_info *sci) in nilfs_segctor_add_super_root() argument
467 struct nilfs_segment_buffer *segbuf = sci->sc_curseg; in nilfs_segctor_add_super_root()
470 if (segbuf->sb_sum.nblocks >= segbuf->sb_rest_blocks) { in nilfs_segctor_add_super_root()
471 err = nilfs_segctor_feed_segment(sci); in nilfs_segctor_add_super_root()
474 segbuf = sci->sc_curseg; in nilfs_segctor_add_super_root()
476 err = nilfs_segbuf_extend_payload(segbuf, &segbuf->sb_super_root); in nilfs_segctor_add_super_root()
478 segbuf->sb_sum.flags |= NILFS_SS_SR; in nilfs_segctor_add_super_root()
486 struct nilfs_sc_info *sci, const struct nilfs_segsum_pointer *ssp, in nilfs_segctor_segsum_block_required() argument
489 unsigned int blocksize = sci->sc_super->s_blocksize; in nilfs_segctor_segsum_block_required()
492 return ssp->offset + binfo_size + in nilfs_segctor_segsum_block_required()
493 (!sci->sc_blk_cnt ? sizeof(struct nilfs_finfo) : 0) > in nilfs_segctor_segsum_block_required()
497 static void nilfs_segctor_begin_finfo(struct nilfs_sc_info *sci, in nilfs_segctor_begin_finfo() argument
500 sci->sc_curseg->sb_sum.nfinfo++; in nilfs_segctor_begin_finfo()
501 sci->sc_binfo_ptr = sci->sc_finfo_ptr; in nilfs_segctor_begin_finfo()
503 sci, &sci->sc_binfo_ptr, sizeof(struct nilfs_finfo)); in nilfs_segctor_begin_finfo()
505 if (NILFS_I(inode)->i_root && in nilfs_segctor_begin_finfo()
506 !test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags)) in nilfs_segctor_begin_finfo()
507 set_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); in nilfs_segctor_begin_finfo()
511 static void nilfs_segctor_end_finfo(struct nilfs_sc_info *sci, in nilfs_segctor_end_finfo() argument
519 if (sci->sc_blk_cnt == 0) in nilfs_segctor_end_finfo()
524 if (ii->i_type & NILFS_I_TYPE_GC) in nilfs_segctor_end_finfo()
525 cno = ii->i_cno; in nilfs_segctor_end_finfo()
526 else if (NILFS_ROOT_METADATA_FILE(inode->i_ino)) in nilfs_segctor_end_finfo()
529 cno = sci->sc_cno; in nilfs_segctor_end_finfo()
531 finfo = nilfs_segctor_map_segsum_entry(sci, &sci->sc_finfo_ptr, in nilfs_segctor_end_finfo()
533 finfo->fi_ino = cpu_to_le64(inode->i_ino); in nilfs_segctor_end_finfo()
534 finfo->fi_nblocks = cpu_to_le32(sci->sc_blk_cnt); in nilfs_segctor_end_finfo()
535 finfo->fi_ndatablk = cpu_to_le32(sci->sc_datablk_cnt); in nilfs_segctor_end_finfo()
536 finfo->fi_cno = cpu_to_le64(cno); in nilfs_segctor_end_finfo()
538 segbuf = sci->sc_curseg; in nilfs_segctor_end_finfo()
539 segbuf->sb_sum.sumbytes = sci->sc_binfo_ptr.offset + in nilfs_segctor_end_finfo()
540 sci->sc_super->s_blocksize * (segbuf->sb_sum.nsumblk - 1); in nilfs_segctor_end_finfo()
541 sci->sc_finfo_ptr = sci->sc_binfo_ptr; in nilfs_segctor_end_finfo()
542 sci->sc_blk_cnt = sci->sc_datablk_cnt = 0; in nilfs_segctor_end_finfo()
545 static int nilfs_segctor_add_file_block(struct nilfs_sc_info *sci, in nilfs_segctor_add_file_block() argument
554 segbuf = sci->sc_curseg; in nilfs_segctor_add_file_block()
556 sci, &sci->sc_binfo_ptr, binfo_size); in nilfs_segctor_add_file_block()
557 if (segbuf->sb_sum.nblocks + required + 1 > segbuf->sb_rest_blocks) { in nilfs_segctor_add_file_block()
558 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_add_file_block()
559 err = nilfs_segctor_feed_segment(sci); in nilfs_segctor_add_file_block()
565 nilfs_segctor_zeropad_segsum(sci); in nilfs_segctor_add_file_block()
570 if (sci->sc_blk_cnt == 0) in nilfs_segctor_add_file_block()
571 nilfs_segctor_begin_finfo(sci, inode); in nilfs_segctor_add_file_block()
573 nilfs_segctor_map_segsum_entry(sci, &sci->sc_binfo_ptr, binfo_size); in nilfs_segctor_add_file_block()
576 sci->sc_blk_cnt++; in nilfs_segctor_add_file_block()
584 static int nilfs_collect_file_data(struct nilfs_sc_info *sci, in nilfs_collect_file_data() argument
589 err = nilfs_bmap_propagate(NILFS_I(inode)->i_bmap, bh); in nilfs_collect_file_data()
593 err = nilfs_segctor_add_file_block(sci, bh, inode, in nilfs_collect_file_data()
596 sci->sc_datablk_cnt++; in nilfs_collect_file_data()
600 static int nilfs_collect_file_node(struct nilfs_sc_info *sci, in nilfs_collect_file_node() argument
604 return nilfs_bmap_propagate(NILFS_I(inode)->i_bmap, bh); in nilfs_collect_file_node()
607 static int nilfs_collect_file_bmap(struct nilfs_sc_info *sci, in nilfs_collect_file_bmap() argument
612 return nilfs_segctor_add_file_block(sci, bh, inode, sizeof(__le64)); in nilfs_collect_file_bmap()
615 static void nilfs_write_file_data_binfo(struct nilfs_sc_info *sci, in nilfs_write_file_data_binfo() argument
620 sci, ssp, sizeof(*binfo_v)); in nilfs_write_file_data_binfo()
621 *binfo_v = binfo->bi_v; in nilfs_write_file_data_binfo()
624 static void nilfs_write_file_node_binfo(struct nilfs_sc_info *sci, in nilfs_write_file_node_binfo() argument
629 sci, ssp, sizeof(*vblocknr)); in nilfs_write_file_node_binfo()
630 *vblocknr = binfo->bi_v.bi_vblocknr; in nilfs_write_file_node_binfo()
641 static int nilfs_collect_dat_data(struct nilfs_sc_info *sci, in nilfs_collect_dat_data() argument
646 err = nilfs_bmap_propagate(NILFS_I(inode)->i_bmap, bh); in nilfs_collect_dat_data()
650 err = nilfs_segctor_add_file_block(sci, bh, inode, sizeof(__le64)); in nilfs_collect_dat_data()
652 sci->sc_datablk_cnt++; in nilfs_collect_dat_data()
656 static int nilfs_collect_dat_bmap(struct nilfs_sc_info *sci, in nilfs_collect_dat_bmap() argument
660 return nilfs_segctor_add_file_block(sci, bh, inode, in nilfs_collect_dat_bmap()
664 static void nilfs_write_dat_data_binfo(struct nilfs_sc_info *sci, in nilfs_write_dat_data_binfo() argument
668 __le64 *blkoff = nilfs_segctor_map_segsum_entry(sci, ssp, in nilfs_write_dat_data_binfo()
670 *blkoff = binfo->bi_dat.bi_blkoff; in nilfs_write_dat_data_binfo()
673 static void nilfs_write_dat_node_binfo(struct nilfs_sc_info *sci, in nilfs_write_dat_node_binfo() argument
678 nilfs_segctor_map_segsum_entry(sci, ssp, sizeof(*binfo_dat)); in nilfs_write_dat_node_binfo()
679 *binfo_dat = binfo->bi_dat; in nilfs_write_dat_node_binfo()
703 struct address_space *mapping = inode->i_mapping; in nilfs_lookup_dirty_data_buffers()
711 * A valid range is given for sync-ing data pages. The in nilfs_lookup_dirty_data_buffers()
712 * range is rounded to per-page; extra dirty buffers in nilfs_lookup_dirty_data_buffers()
730 if (unlikely(folio->mapping != mapping)) { in nilfs_lookup_dirty_data_buffers()
745 list_add_tail(&bh->b_assoc_buffers, listp); in nilfs_lookup_dirty_data_buffers()
753 } while (bh = bh->b_this_page, bh != head); in nilfs_lookup_dirty_data_buffers()
766 struct inode *btnc_inode = ii->i_assoc_inode; in nilfs_lookup_dirty_node_buffers()
776 while (filemap_get_folios_tag(btnc_inode->i_mapping, &index, in nilfs_lookup_dirty_node_buffers()
777 (pgoff_t)-1, PAGECACHE_TAG_DIRTY, &fbatch)) { in nilfs_lookup_dirty_node_buffers()
784 list_add_tail(&bh->b_assoc_buffers, in nilfs_lookup_dirty_node_buffers()
787 bh = bh->b_this_page; in nilfs_lookup_dirty_node_buffers()
803 spin_lock(&nilfs->ns_inode_lock); in nilfs_dispose_list()
805 list_del_init(&ii->i_dirty); in nilfs_dispose_list()
807 if (unlikely(ii->i_bh)) { in nilfs_dispose_list()
808 brelse(ii->i_bh); in nilfs_dispose_list()
809 ii->i_bh = NULL; in nilfs_dispose_list()
811 } else if (test_bit(NILFS_I_DIRTY, &ii->i_state)) { in nilfs_dispose_list()
812 set_bit(NILFS_I_QUEUED, &ii->i_state); in nilfs_dispose_list()
813 list_add_tail(&ii->i_dirty, in nilfs_dispose_list()
814 &nilfs->ns_dirty_files); in nilfs_dispose_list()
821 spin_unlock(&nilfs->ns_inode_lock); in nilfs_dispose_list()
823 for (pii = ivec; nv > 0; pii++, nv--) in nilfs_dispose_list()
824 iput(&(*pii)->vfs_inode); in nilfs_dispose_list()
830 struct nilfs_sc_info *sci = container_of(work, struct nilfs_sc_info, in nilfs_iput_work_func() local
832 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_iput_work_func()
834 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 0); in nilfs_iput_work_func()
842 if (nilfs_mdt_fetch_dirty(root->ifile)) in nilfs_test_metadata_dirty()
844 if (nilfs_mdt_fetch_dirty(nilfs->ns_cpfile)) in nilfs_test_metadata_dirty()
846 if (nilfs_mdt_fetch_dirty(nilfs->ns_sufile)) in nilfs_test_metadata_dirty()
848 if ((ret || nilfs_doing_gc()) && nilfs_mdt_fetch_dirty(nilfs->ns_dat)) in nilfs_test_metadata_dirty()
853 static int nilfs_segctor_clean(struct nilfs_sc_info *sci) in nilfs_segctor_clean() argument
855 return list_empty(&sci->sc_dirty_files) && in nilfs_segctor_clean()
856 !test_bit(NILFS_SC_DIRTY, &sci->sc_flags) && in nilfs_segctor_clean()
857 sci->sc_nfreesegs == 0 && in nilfs_segctor_clean()
858 (!nilfs_doing_gc() || list_empty(&sci->sc_gc_inodes)); in nilfs_segctor_clean()
861 static int nilfs_segctor_confirm(struct nilfs_sc_info *sci) in nilfs_segctor_confirm() argument
863 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_confirm()
866 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) in nilfs_segctor_confirm()
867 set_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_confirm()
869 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_confirm()
870 if (list_empty(&nilfs->ns_dirty_files) && nilfs_segctor_clean(sci)) in nilfs_segctor_confirm()
873 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_confirm()
877 static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci) in nilfs_segctor_clear_metadata_dirty() argument
879 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_clear_metadata_dirty()
881 nilfs_mdt_clear_dirty(sci->sc_root->ifile); in nilfs_segctor_clear_metadata_dirty()
882 nilfs_mdt_clear_dirty(nilfs->ns_cpfile); in nilfs_segctor_clear_metadata_dirty()
883 nilfs_mdt_clear_dirty(nilfs->ns_sufile); in nilfs_segctor_clear_metadata_dirty()
884 nilfs_mdt_clear_dirty(nilfs->ns_dat); in nilfs_segctor_clear_metadata_dirty()
894 if (test_bit(NILFS_I_BMAP, &ii->i_state)) { in nilfs_fill_in_file_bmap()
895 ibh = ii->i_bh; in nilfs_fill_in_file_bmap()
897 raw_inode = nilfs_ifile_map_inode(ifile, ii->vfs_inode.i_ino, in nilfs_fill_in_file_bmap()
899 nilfs_bmap_write(ii->i_bmap, raw_inode); in nilfs_fill_in_file_bmap()
904 static void nilfs_segctor_fill_in_file_bmap(struct nilfs_sc_info *sci) in nilfs_segctor_fill_in_file_bmap() argument
908 list_for_each_entry(ii, &sci->sc_dirty_files, i_dirty) { in nilfs_segctor_fill_in_file_bmap()
909 nilfs_fill_in_file_bmap(sci->sc_root->ifile, ii); in nilfs_segctor_fill_in_file_bmap()
910 set_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_segctor_fill_in_file_bmap()
915 * nilfs_write_root_mdt_inode - export root metadata inode information to
916 * the on-disk inode
918 * @raw_inode: on-disk inode
923 * each time, this function zero-fills the unused area of @raw_inode.
928 struct the_nilfs *nilfs = inode->i_sb->s_fs_info; in nilfs_write_root_mdt_inode()
932 /* zero-fill unused portion of raw_inode */ in nilfs_write_root_mdt_inode()
933 raw_inode->i_xattr = 0; in nilfs_write_root_mdt_inode()
934 raw_inode->i_pad = 0; in nilfs_write_root_mdt_inode()
936 nilfs->ns_inode_size - sizeof(*raw_inode)); in nilfs_write_root_mdt_inode()
938 nilfs_bmap_write(NILFS_I(inode)->i_bmap, raw_inode); in nilfs_write_root_mdt_inode()
941 static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci, in nilfs_segctor_fill_in_super_root() argument
948 bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root; in nilfs_segctor_fill_in_super_root()
951 raw_sr = (struct nilfs_super_root *)bh_sr->b_data; in nilfs_segctor_fill_in_super_root()
952 isz = nilfs->ns_inode_size; in nilfs_segctor_fill_in_super_root()
955 raw_sr->sr_sum = 0; /* Ensure initialization within this update */ in nilfs_segctor_fill_in_super_root()
956 raw_sr->sr_bytes = cpu_to_le16(srsz); in nilfs_segctor_fill_in_super_root()
957 raw_sr->sr_nongc_ctime in nilfs_segctor_fill_in_super_root()
959 nilfs->ns_nongc_ctime : sci->sc_seg_ctime); in nilfs_segctor_fill_in_super_root()
960 raw_sr->sr_flags = 0; in nilfs_segctor_fill_in_super_root()
962 nilfs_write_root_mdt_inode(nilfs->ns_dat, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
964 nilfs_write_root_mdt_inode(nilfs->ns_cpfile, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
966 nilfs_write_root_mdt_inode(nilfs->ns_sufile, (void *)raw_sr + in nilfs_segctor_fill_in_super_root()
969 memset((void *)raw_sr + srsz, 0, nilfs->ns_blocksize - srsz); in nilfs_segctor_fill_in_super_root()
979 if (test_bit(NILFS_I_COLLECTED, &ii->i_state)) in nilfs_redirty_inodes()
980 clear_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_redirty_inodes()
989 if (!test_and_clear_bit(NILFS_I_COLLECTED, &ii->i_state)) in nilfs_drop_collected_inodes()
992 clear_bit(NILFS_I_INODE_SYNC, &ii->i_state); in nilfs_drop_collected_inodes()
993 set_bit(NILFS_I_UPDATED, &ii->i_state); in nilfs_drop_collected_inodes()
997 static int nilfs_segctor_apply_buffers(struct nilfs_sc_info *sci, in nilfs_segctor_apply_buffers() argument
1009 list_del_init(&bh->b_assoc_buffers); in nilfs_segctor_apply_buffers()
1010 err = collect(sci, bh, inode); in nilfs_segctor_apply_buffers()
1022 list_del_init(&bh->b_assoc_buffers); in nilfs_segctor_apply_buffers()
1028 static size_t nilfs_segctor_buffer_rest(struct nilfs_sc_info *sci) in nilfs_segctor_buffer_rest() argument
1031 return sci->sc_segbuf_nblocks - in nilfs_segctor_buffer_rest()
1032 (sci->sc_nblk_this_inc + sci->sc_curseg->sb_sum.nblocks); in nilfs_segctor_buffer_rest()
1035 static int nilfs_segctor_scan_file(struct nilfs_sc_info *sci, in nilfs_segctor_scan_file() argument
1043 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) { in nilfs_segctor_scan_file()
1044 size_t n, rest = nilfs_segctor_buffer_rest(sci); in nilfs_segctor_scan_file()
1050 sci, inode, &data_buffers, in nilfs_segctor_scan_file()
1051 sc_ops->collect_data); in nilfs_segctor_scan_file()
1052 BUG_ON(!err); /* always receive -E2BIG or true error */ in nilfs_segctor_scan_file()
1058 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) { in nilfs_segctor_scan_file()
1060 sci, inode, &data_buffers, sc_ops->collect_data); in nilfs_segctor_scan_file()
1064 sci, inode, &node_buffers, NULL); in nilfs_segctor_scan_file()
1067 sci->sc_stage.flags |= NILFS_CF_NODE; in nilfs_segctor_scan_file()
1071 sci, inode, &node_buffers, sc_ops->collect_node); in nilfs_segctor_scan_file()
1075 nilfs_bmap_lookup_dirty_buffers(NILFS_I(inode)->i_bmap, &node_buffers); in nilfs_segctor_scan_file()
1077 sci, inode, &node_buffers, sc_ops->collect_bmap); in nilfs_segctor_scan_file()
1081 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_scan_file()
1082 sci->sc_stage.flags &= ~NILFS_CF_NODE; in nilfs_segctor_scan_file()
1088 static int nilfs_segctor_scan_file_dsync(struct nilfs_sc_info *sci, in nilfs_segctor_scan_file_dsync() argument
1092 size_t n, rest = nilfs_segctor_buffer_rest(sci); in nilfs_segctor_scan_file_dsync()
1096 sci->sc_dsync_start, in nilfs_segctor_scan_file_dsync()
1097 sci->sc_dsync_end); in nilfs_segctor_scan_file_dsync()
1099 err = nilfs_segctor_apply_buffers(sci, inode, &data_buffers, in nilfs_segctor_scan_file_dsync()
1102 nilfs_segctor_end_finfo(sci, inode); in nilfs_segctor_scan_file_dsync()
1104 /* always receive -E2BIG or true error if n > rest */ in nilfs_segctor_scan_file_dsync()
1110 * nilfs_free_segments - free the segments given by an array of segment numbers
1127 * * %-EINVAL - Invalid segment number.
1128 * * %-EIO - I/O error (including metadata corruption).
1129 * * %-ENOMEM - Insufficient memory available.
1140 ret = nilfs_sufile_freev(nilfs->ns_sufile, segnumv, nsegs, &ndone); in nilfs_free_segments()
1142 nilfs_sufile_cancel_freev(nilfs->ns_sufile, segnumv, ndone, in nilfs_free_segments()
1146 * hole block, nilfs_sufile_freev() will return -ENOENT. in nilfs_free_segments()
1147 * In this case, -EINVAL should be returned to the caller in nilfs_free_segments()
1153 if (ret == -ENOENT) { in nilfs_free_segments()
1154 nilfs_err(nilfs->ns_sb, in nilfs_free_segments()
1157 ret = -EINVAL; in nilfs_free_segments()
1163 static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_collect_blocks() argument
1165 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_collect_blocks()
1170 switch (nilfs_sc_cstage_get(sci)) { in nilfs_segctor_collect_blocks()
1172 /* Pre-processes */ in nilfs_segctor_collect_blocks()
1173 sci->sc_stage.flags = 0; in nilfs_segctor_collect_blocks()
1175 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) { in nilfs_segctor_collect_blocks()
1176 sci->sc_nblk_inc = 0; in nilfs_segctor_collect_blocks()
1177 sci->sc_curseg->sb_sum.flags = NILFS_SS_LOGBGN; in nilfs_segctor_collect_blocks()
1179 nilfs_sc_cstage_set(sci, NILFS_ST_DSYNC); in nilfs_segctor_collect_blocks()
1184 sci->sc_stage.dirty_file_ptr = NULL; in nilfs_segctor_collect_blocks()
1185 sci->sc_stage.gc_inode_ptr = NULL; in nilfs_segctor_collect_blocks()
1187 nilfs_sc_cstage_set(sci, NILFS_ST_DAT); in nilfs_segctor_collect_blocks()
1190 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1194 head = &sci->sc_gc_inodes; in nilfs_segctor_collect_blocks()
1195 ii = list_prepare_entry(sci->sc_stage.gc_inode_ptr, in nilfs_segctor_collect_blocks()
1199 sci, &ii->vfs_inode, in nilfs_segctor_collect_blocks()
1202 sci->sc_stage.gc_inode_ptr = list_entry( in nilfs_segctor_collect_blocks()
1203 ii->i_dirty.prev, in nilfs_segctor_collect_blocks()
1208 set_bit(NILFS_I_COLLECTED, &ii->i_state); in nilfs_segctor_collect_blocks()
1210 sci->sc_stage.gc_inode_ptr = NULL; in nilfs_segctor_collect_blocks()
1212 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1215 head = &sci->sc_dirty_files; in nilfs_segctor_collect_blocks()
1216 ii = list_prepare_entry(sci->sc_stage.dirty_file_ptr, head, in nilfs_segctor_collect_blocks()
1219 clear_bit(NILFS_I_DIRTY, &ii->i_state); in nilfs_segctor_collect_blocks()
1221 err = nilfs_segctor_scan_file(sci, &ii->vfs_inode, in nilfs_segctor_collect_blocks()
1224 sci->sc_stage.dirty_file_ptr = in nilfs_segctor_collect_blocks()
1225 list_entry(ii->i_dirty.prev, in nilfs_segctor_collect_blocks()
1230 /* sci->sc_stage.dirty_file_ptr = NILFS_I(inode); */ in nilfs_segctor_collect_blocks()
1233 sci->sc_stage.dirty_file_ptr = NULL; in nilfs_segctor_collect_blocks()
1235 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1238 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1239 sci->sc_stage.flags |= NILFS_CF_IFILE_STARTED; in nilfs_segctor_collect_blocks()
1242 err = nilfs_segctor_scan_file(sci, sci->sc_root->ifile, in nilfs_segctor_collect_blocks()
1246 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1248 err = nilfs_cpfile_create_checkpoint(nilfs->ns_cpfile, in nilfs_segctor_collect_blocks()
1249 nilfs->ns_cno); in nilfs_segctor_collect_blocks()
1254 err = nilfs_segctor_scan_file(sci, nilfs->ns_cpfile, in nilfs_segctor_collect_blocks()
1258 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1261 err = nilfs_free_segments(nilfs, sci->sc_freesegs, in nilfs_segctor_collect_blocks()
1262 sci->sc_nfreesegs); in nilfs_segctor_collect_blocks()
1265 sci->sc_stage.flags |= NILFS_CF_SUFREED; in nilfs_segctor_collect_blocks()
1267 err = nilfs_segctor_scan_file(sci, nilfs->ns_sufile, in nilfs_segctor_collect_blocks()
1271 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1275 err = nilfs_segctor_scan_file(sci, nilfs->ns_dat, in nilfs_segctor_collect_blocks()
1280 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1283 nilfs_sc_cstage_inc(sci); in nilfs_segctor_collect_blocks()
1288 err = nilfs_segctor_add_super_root(sci); in nilfs_segctor_collect_blocks()
1293 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND; in nilfs_segctor_collect_blocks()
1294 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1298 sci->sc_curseg->sb_sum.flags |= NILFS_SS_SYNDT; in nilfs_segctor_collect_blocks()
1299 ii = sci->sc_dsync_inode; in nilfs_segctor_collect_blocks()
1300 if (!test_bit(NILFS_I_BUSY, &ii->i_state)) in nilfs_segctor_collect_blocks()
1303 err = nilfs_segctor_scan_file_dsync(sci, &ii->vfs_inode); in nilfs_segctor_collect_blocks()
1306 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND; in nilfs_segctor_collect_blocks()
1307 nilfs_sc_cstage_set(sci, NILFS_ST_DONE); in nilfs_segctor_collect_blocks()
1320 * nilfs_segctor_begin_construction - setup segment buffer to make a new log
1321 * @sci: nilfs_sc_info
1326 static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci, in nilfs_segctor_begin_construction() argument
1333 segbuf = nilfs_segbuf_new(sci->sc_super); in nilfs_segctor_begin_construction()
1335 return -ENOMEM; in nilfs_segctor_begin_construction()
1337 if (list_empty(&sci->sc_write_logs)) { in nilfs_segctor_begin_construction()
1338 nilfs_segbuf_map(segbuf, nilfs->ns_segnum, in nilfs_segctor_begin_construction()
1339 nilfs->ns_pseg_offset, nilfs); in nilfs_segctor_begin_construction()
1340 if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { in nilfs_segctor_begin_construction()
1342 nilfs_segbuf_map(segbuf, nilfs->ns_segnum, 0, nilfs); in nilfs_segctor_begin_construction()
1345 segbuf->sb_sum.seg_seq = nilfs->ns_seg_seq; in nilfs_segctor_begin_construction()
1346 nextnum = nilfs->ns_nextnum; in nilfs_segctor_begin_construction()
1348 if (nilfs->ns_segnum == nilfs->ns_nextnum) in nilfs_segctor_begin_construction()
1353 prev = NILFS_LAST_SEGBUF(&sci->sc_write_logs); in nilfs_segctor_begin_construction()
1355 segbuf->sb_sum.seg_seq = prev->sb_sum.seg_seq; in nilfs_segctor_begin_construction()
1356 nextnum = prev->sb_nextnum; in nilfs_segctor_begin_construction()
1358 if (segbuf->sb_rest_blocks < NILFS_PSEG_MIN_BLOCKS) { in nilfs_segctor_begin_construction()
1359 nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); in nilfs_segctor_begin_construction()
1360 segbuf->sb_sum.seg_seq++; in nilfs_segctor_begin_construction()
1365 err = nilfs_sufile_mark_dirty(nilfs->ns_sufile, segbuf->sb_segnum); in nilfs_segctor_begin_construction()
1370 err = nilfs_sufile_alloc(nilfs->ns_sufile, &nextnum); in nilfs_segctor_begin_construction()
1376 BUG_ON(!list_empty(&sci->sc_segbufs)); in nilfs_segctor_begin_construction()
1377 list_add_tail(&segbuf->sb_list, &sci->sc_segbufs); in nilfs_segctor_begin_construction()
1378 sci->sc_segbuf_nblocks = segbuf->sb_rest_blocks; in nilfs_segctor_begin_construction()
1386 static int nilfs_segctor_extend_segments(struct nilfs_sc_info *sci, in nilfs_segctor_extend_segments() argument
1390 struct inode *sufile = nilfs->ns_sufile; in nilfs_segctor_extend_segments()
1395 prev = NILFS_LAST_SEGBUF(&sci->sc_segbufs); in nilfs_segctor_extend_segments()
1402 err = nilfs_sufile_mark_dirty(sufile, prev->sb_nextnum); in nilfs_segctor_extend_segments()
1408 err = -ENOMEM; in nilfs_segctor_extend_segments()
1409 segbuf = nilfs_segbuf_new(sci->sc_super); in nilfs_segctor_extend_segments()
1413 /* map this buffer to region of segment on-disk */ in nilfs_segctor_extend_segments()
1414 nilfs_segbuf_map(segbuf, prev->sb_nextnum, 0, nilfs); in nilfs_segctor_extend_segments()
1415 sci->sc_segbuf_nblocks += segbuf->sb_rest_blocks; in nilfs_segctor_extend_segments()
1422 segbuf->sb_sum.seg_seq = prev->sb_sum.seg_seq + 1; in nilfs_segctor_extend_segments()
1425 list_add_tail(&segbuf->sb_list, &list); in nilfs_segctor_extend_segments()
1428 list_splice_tail(&list, &sci->sc_segbufs); in nilfs_segctor_extend_segments()
1435 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_segctor_extend_segments()
1446 struct inode *sufile = nilfs->ns_sufile; in nilfs_free_incomplete_logs()
1450 if (nilfs->ns_nextnum != segbuf->sb_nextnum) { in nilfs_free_incomplete_logs()
1451 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_free_incomplete_logs()
1454 if (atomic_read(&segbuf->sb_err)) { in nilfs_free_incomplete_logs()
1456 if (segbuf->sb_pseg_start != segbuf->sb_fseg_start) in nilfs_free_incomplete_logs()
1461 nilfs_terminate_segment(nilfs, segbuf->sb_fseg_start, in nilfs_free_incomplete_logs()
1462 segbuf->sb_fseg_end); in nilfs_free_incomplete_logs()
1469 if (prev->sb_nextnum != segbuf->sb_nextnum) { in nilfs_free_incomplete_logs()
1470 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_free_incomplete_logs()
1473 if (atomic_read(&segbuf->sb_err) && in nilfs_free_incomplete_logs()
1474 segbuf->sb_segnum != nilfs->ns_nextnum) in nilfs_free_incomplete_logs()
1476 nilfs_sufile_set_error(sufile, segbuf->sb_segnum); in nilfs_free_incomplete_logs()
1481 static void nilfs_segctor_update_segusage(struct nilfs_sc_info *sci, in nilfs_segctor_update_segusage() argument
1488 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_update_segusage()
1489 live_blocks = segbuf->sb_sum.nblocks + in nilfs_segctor_update_segusage()
1490 (segbuf->sb_pseg_start - segbuf->sb_fseg_start); in nilfs_segctor_update_segusage()
1491 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_segctor_update_segusage()
1493 sci->sc_seg_ctime); in nilfs_segctor_update_segusage()
1504 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_cancel_segusage()
1505 segbuf->sb_pseg_start - in nilfs_cancel_segusage()
1506 segbuf->sb_fseg_start, 0); in nilfs_cancel_segusage()
1510 ret = nilfs_sufile_set_segment_usage(sufile, segbuf->sb_segnum, in nilfs_cancel_segusage()
1516 static void nilfs_segctor_truncate_segments(struct nilfs_sc_info *sci, in nilfs_segctor_truncate_segments() argument
1523 list_for_each_entry_continue(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_truncate_segments()
1524 sci->sc_segbuf_nblocks -= segbuf->sb_rest_blocks; in nilfs_segctor_truncate_segments()
1525 ret = nilfs_sufile_free(sufile, segbuf->sb_nextnum); in nilfs_segctor_truncate_segments()
1528 nilfs_truncate_logs(&sci->sc_segbufs, last); in nilfs_segctor_truncate_segments()
1532 static int nilfs_segctor_collect(struct nilfs_sc_info *sci, in nilfs_segctor_collect() argument
1535 struct nilfs_cstage prev_stage = sci->sc_stage; in nilfs_segctor_collect()
1540 sci->sc_nblk_this_inc = 0; in nilfs_segctor_collect()
1541 sci->sc_curseg = NILFS_FIRST_SEGBUF(&sci->sc_segbufs); in nilfs_segctor_collect()
1543 err = nilfs_segctor_reset_segment_buffer(sci); in nilfs_segctor_collect()
1547 err = nilfs_segctor_collect_blocks(sci, mode); in nilfs_segctor_collect()
1548 sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks; in nilfs_segctor_collect()
1552 if (unlikely(err != -E2BIG)) in nilfs_segctor_collect()
1557 nilfs_sc_cstage_get(sci) < NILFS_ST_CPFILE) in nilfs_segctor_collect()
1560 nilfs_clear_logs(&sci->sc_segbufs); in nilfs_segctor_collect()
1562 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { in nilfs_segctor_collect()
1563 err = nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_collect()
1564 sci->sc_freesegs, in nilfs_segctor_collect()
1565 sci->sc_nfreesegs, in nilfs_segctor_collect()
1568 sci->sc_stage.flags &= ~NILFS_CF_SUFREED; in nilfs_segctor_collect()
1571 err = nilfs_segctor_extend_segments(sci, nilfs, nadd); in nilfs_segctor_collect()
1576 sci->sc_stage = prev_stage; in nilfs_segctor_collect()
1578 nilfs_segctor_zeropad_segsum(sci); in nilfs_segctor_collect()
1579 nilfs_segctor_truncate_segments(sci, sci->sc_curseg, nilfs->ns_sufile); in nilfs_segctor_collect()
1589 BUG_ON(!list_empty(&new_bh->b_assoc_buffers)); in nilfs_list_replace_buffer()
1591 list_replace_init(&old_bh->b_assoc_buffers, &new_bh->b_assoc_buffers); in nilfs_list_replace_buffer()
1596 nilfs_segctor_update_payload_blocknr(struct nilfs_sc_info *sci, in nilfs_segctor_update_payload_blocknr() argument
1602 unsigned long nfinfo = segbuf->sb_sum.nfinfo; in nilfs_segctor_update_payload_blocknr()
1615 blocknr = segbuf->sb_pseg_start + segbuf->sb_sum.nsumblk; in nilfs_segctor_update_payload_blocknr()
1616 ssp.bh = NILFS_SEGBUF_FIRST_BH(&segbuf->sb_segsum_buffers); in nilfs_segctor_update_payload_blocknr()
1619 list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) { in nilfs_segctor_update_payload_blocknr()
1620 if (bh == segbuf->sb_super_root) in nilfs_segctor_update_payload_blocknr()
1624 sci, &ssp, sizeof(*finfo)); in nilfs_segctor_update_payload_blocknr()
1625 ino = le64_to_cpu(finfo->fi_ino); in nilfs_segctor_update_payload_blocknr()
1626 nblocks = le32_to_cpu(finfo->fi_nblocks); in nilfs_segctor_update_payload_blocknr()
1627 ndatablk = le32_to_cpu(finfo->fi_ndatablk); in nilfs_segctor_update_payload_blocknr()
1629 inode = bh->b_folio->mapping->host; in nilfs_segctor_update_payload_blocknr()
1640 err = nilfs_bmap_assign(NILFS_I(inode)->i_bmap, &bh, blocknr, in nilfs_segctor_update_payload_blocknr()
1649 sc_op->write_data_binfo(sci, &ssp, &binfo); in nilfs_segctor_update_payload_blocknr()
1651 sc_op->write_node_binfo(sci, &ssp, &binfo); in nilfs_segctor_update_payload_blocknr()
1654 if (--nblocks == 0) { in nilfs_segctor_update_payload_blocknr()
1656 if (--nfinfo == 0) in nilfs_segctor_update_payload_blocknr()
1659 ndatablk--; in nilfs_segctor_update_payload_blocknr()
1668 static int nilfs_segctor_assign(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_assign() argument
1673 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) { in nilfs_segctor_assign()
1674 err = nilfs_segctor_update_payload_blocknr(sci, segbuf, mode); in nilfs_segctor_assign()
1686 * For split b-tree node pages, this function may be called in nilfs_begin_folio_io()
1698 * nilfs_prepare_write_logs - prepare to write logs
1704 * memory-mapped file blocks by putting them in writeback state before
1717 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_prepare_write_logs()
1719 if (bh == segbuf->sb_super_root) in nilfs_prepare_write_logs()
1722 if (bh->b_folio != fs_folio) { in nilfs_prepare_write_logs()
1724 fs_folio = bh->b_folio; in nilfs_prepare_write_logs()
1734 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_prepare_write_logs()
1737 if (bh->b_folio == bd_folio) in nilfs_prepare_write_logs()
1746 bd_folio = bh->b_folio; in nilfs_prepare_write_logs()
1751 bh = NILFS_LAST_SEGBUF(logs)->sb_super_root; in nilfs_prepare_write_logs()
1754 if (bh->b_folio != bd_folio) { in nilfs_prepare_write_logs()
1760 bd_folio = bh->b_folio; in nilfs_prepare_write_logs()
1773 static int nilfs_segctor_write(struct nilfs_sc_info *sci, in nilfs_segctor_write() argument
1778 ret = nilfs_write_logs(&sci->sc_segbufs, nilfs); in nilfs_segctor_write()
1779 list_splice_tail_init(&sci->sc_segbufs, &sci->sc_write_logs); in nilfs_segctor_write()
1791 * For b-tree node pages, this function may be called twice in nilfs_end_folio_io()
1796 * For pages holding split b-tree node buffers, dirty in nilfs_end_folio_io()
1811 filemap_dirty_folio(folio->mapping, folio); in nilfs_end_folio_io()
1826 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_abort_logs()
1829 if (bh->b_folio != bd_folio) { in nilfs_abort_logs()
1832 bd_folio = bh->b_folio; in nilfs_abort_logs()
1836 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_abort_logs()
1838 if (bh == segbuf->sb_super_root) { in nilfs_abort_logs()
1840 if (bh->b_folio != bd_folio) { in nilfs_abort_logs()
1842 bd_folio = bh->b_folio; in nilfs_abort_logs()
1847 if (bh->b_folio != fs_folio) { in nilfs_abort_logs()
1849 fs_folio = bh->b_folio; in nilfs_abort_logs()
1859 static void nilfs_segctor_abort_construction(struct nilfs_sc_info *sci, in nilfs_segctor_abort_construction() argument
1865 list_splice_tail_init(&sci->sc_write_logs, &logs); in nilfs_segctor_abort_construction()
1869 list_splice_tail_init(&sci->sc_segbufs, &logs); in nilfs_segctor_abort_construction()
1873 nilfs_cancel_segusage(&logs, nilfs->ns_sufile); in nilfs_segctor_abort_construction()
1876 if (sci->sc_stage.flags & NILFS_CF_SUFREED) { in nilfs_segctor_abort_construction()
1877 ret = nilfs_sufile_cancel_freev(nilfs->ns_sufile, in nilfs_segctor_abort_construction()
1878 sci->sc_freesegs, in nilfs_segctor_abort_construction()
1879 sci->sc_nfreesegs, in nilfs_segctor_abort_construction()
1890 nilfs->ns_segnum = segbuf->sb_segnum; in nilfs_set_next_segment()
1891 nilfs->ns_nextnum = segbuf->sb_nextnum; in nilfs_set_next_segment()
1892 nilfs->ns_pseg_offset = segbuf->sb_pseg_start - segbuf->sb_fseg_start in nilfs_set_next_segment()
1893 + segbuf->sb_sum.nblocks; in nilfs_set_next_segment()
1894 nilfs->ns_seg_seq = segbuf->sb_sum.seg_seq; in nilfs_set_next_segment()
1895 nilfs->ns_ctime = segbuf->sb_sum.ctime; in nilfs_set_next_segment()
1898 static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) in nilfs_segctor_complete_write() argument
1902 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_complete_write()
1905 list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) { in nilfs_segctor_complete_write()
1908 list_for_each_entry(bh, &segbuf->sb_segsum_buffers, in nilfs_segctor_complete_write()
1912 if (bh->b_folio != bd_folio) { in nilfs_segctor_complete_write()
1915 bd_folio = bh->b_folio; in nilfs_segctor_complete_write()
1922 * identifiable by the discontinuity of bh->b_folio in nilfs_segctor_complete_write()
1925 * For B-tree node blocks, however, this assumption is not in nilfs_segctor_complete_write()
1926 * guaranteed. The cleanup code of B-tree node folios needs in nilfs_segctor_complete_write()
1929 list_for_each_entry(bh, &segbuf->sb_payload_buffers, in nilfs_segctor_complete_write()
1937 if (bh == segbuf->sb_super_root) { in nilfs_segctor_complete_write()
1940 if (bh->b_folio != bd_folio) { in nilfs_segctor_complete_write()
1942 bd_folio = bh->b_folio; in nilfs_segctor_complete_write()
1947 set_mask_bits(&bh->b_state, clear_bits, set_bits); in nilfs_segctor_complete_write()
1948 if (bh->b_folio != fs_folio) { in nilfs_segctor_complete_write()
1950 fs_folio = bh->b_folio; in nilfs_segctor_complete_write()
1955 if (segbuf->sb_sum.flags & NILFS_SS_LOGBGN) { in nilfs_segctor_complete_write()
1956 set_bit(NILFS_SC_UNCLOSED, &sci->sc_flags); in nilfs_segctor_complete_write()
1957 sci->sc_lseg_stime = jiffies; in nilfs_segctor_complete_write()
1959 if (segbuf->sb_sum.flags & NILFS_SS_LOGEND) in nilfs_segctor_complete_write()
1960 clear_bit(NILFS_SC_UNCLOSED, &sci->sc_flags); in nilfs_segctor_complete_write()
1972 nilfs_drop_collected_inodes(&sci->sc_dirty_files); in nilfs_segctor_complete_write()
1975 nilfs_drop_collected_inodes(&sci->sc_gc_inodes); in nilfs_segctor_complete_write()
1977 nilfs->ns_nongc_ctime = sci->sc_seg_ctime; in nilfs_segctor_complete_write()
1979 sci->sc_nblk_inc += sci->sc_nblk_this_inc; in nilfs_segctor_complete_write()
1981 segbuf = NILFS_LAST_SEGBUF(&sci->sc_write_logs); in nilfs_segctor_complete_write()
1985 nilfs->ns_flushed_device = 0; in nilfs_segctor_complete_write()
1986 nilfs_set_last_segment(nilfs, segbuf->sb_pseg_start, in nilfs_segctor_complete_write()
1987 segbuf->sb_sum.seg_seq, nilfs->ns_cno++); in nilfs_segctor_complete_write()
1989 clear_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags); in nilfs_segctor_complete_write()
1990 clear_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_complete_write()
1991 set_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); in nilfs_segctor_complete_write()
1992 nilfs_segctor_clear_metadata_dirty(sci); in nilfs_segctor_complete_write()
1994 clear_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags); in nilfs_segctor_complete_write()
1997 static int nilfs_segctor_wait(struct nilfs_sc_info *sci) in nilfs_segctor_wait() argument
2001 ret = nilfs_wait_on_logs(&sci->sc_write_logs); in nilfs_segctor_wait()
2003 nilfs_segctor_complete_write(sci); in nilfs_segctor_wait()
2004 nilfs_destroy_logs(&sci->sc_write_logs); in nilfs_segctor_wait()
2009 static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci, in nilfs_segctor_collect_dirty_files() argument
2013 struct inode *ifile = sci->sc_root->ifile; in nilfs_segctor_collect_dirty_files()
2015 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
2017 list_for_each_entry_safe(ii, n, &nilfs->ns_dirty_files, i_dirty) { in nilfs_segctor_collect_dirty_files()
2018 if (!ii->i_bh) { in nilfs_segctor_collect_dirty_files()
2022 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
2024 ifile, ii->vfs_inode.i_ino, &ibh); in nilfs_segctor_collect_dirty_files()
2026 nilfs_warn(sci->sc_super, in nilfs_segctor_collect_dirty_files()
2028 err, ii->vfs_inode.i_ino); in nilfs_segctor_collect_dirty_files()
2031 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
2032 if (likely(!ii->i_bh)) in nilfs_segctor_collect_dirty_files()
2033 ii->i_bh = ibh; in nilfs_segctor_collect_dirty_files()
2040 mark_buffer_dirty(ii->i_bh); in nilfs_segctor_collect_dirty_files()
2043 clear_bit(NILFS_I_QUEUED, &ii->i_state); in nilfs_segctor_collect_dirty_files()
2044 set_bit(NILFS_I_BUSY, &ii->i_state); in nilfs_segctor_collect_dirty_files()
2045 list_move_tail(&ii->i_dirty, &sci->sc_dirty_files); in nilfs_segctor_collect_dirty_files()
2047 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_collect_dirty_files()
2052 static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci, in nilfs_segctor_drop_written_files() argument
2056 int during_mount = !(sci->sc_super->s_flags & SB_ACTIVE); in nilfs_segctor_drop_written_files()
2059 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2060 list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) { in nilfs_segctor_drop_written_files()
2061 if (!test_and_clear_bit(NILFS_I_UPDATED, &ii->i_state) || in nilfs_segctor_drop_written_files()
2062 test_bit(NILFS_I_DIRTY, &ii->i_state)) in nilfs_segctor_drop_written_files()
2065 clear_bit(NILFS_I_BUSY, &ii->i_state); in nilfs_segctor_drop_written_files()
2066 brelse(ii->i_bh); in nilfs_segctor_drop_written_files()
2067 ii->i_bh = NULL; in nilfs_segctor_drop_written_files()
2068 list_del_init(&ii->i_dirty); in nilfs_segctor_drop_written_files()
2069 if (!ii->vfs_inode.i_nlink || during_mount) { in nilfs_segctor_drop_written_files()
2074 list_add_tail(&ii->i_dirty, &sci->sc_iput_queue); in nilfs_segctor_drop_written_files()
2077 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2078 iput(&ii->vfs_inode); in nilfs_segctor_drop_written_files()
2079 spin_lock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2082 spin_unlock(&nilfs->ns_inode_lock); in nilfs_segctor_drop_written_files()
2085 schedule_work(&sci->sc_iput_work); in nilfs_segctor_drop_written_files()
2091 static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_do_construct() argument
2093 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_do_construct()
2096 if (sb_rdonly(sci->sc_super)) in nilfs_segctor_do_construct()
2097 return -EROFS; in nilfs_segctor_do_construct()
2099 nilfs_sc_cstage_set(sci, NILFS_ST_INIT); in nilfs_segctor_do_construct()
2100 sci->sc_cno = nilfs->ns_cno; in nilfs_segctor_do_construct()
2102 err = nilfs_segctor_collect_dirty_files(sci, nilfs); in nilfs_segctor_do_construct()
2106 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root)) in nilfs_segctor_do_construct()
2107 set_bit(NILFS_SC_DIRTY, &sci->sc_flags); in nilfs_segctor_do_construct()
2109 if (nilfs_segctor_clean(sci)) in nilfs_segctor_do_construct()
2113 sci->sc_stage.flags &= ~NILFS_CF_HISTORY_MASK; in nilfs_segctor_do_construct()
2115 err = nilfs_segctor_begin_construction(sci, nilfs); in nilfs_segctor_do_construct()
2120 sci->sc_seg_ctime = ktime_get_real_seconds(); in nilfs_segctor_do_construct()
2122 err = nilfs_segctor_collect(sci, nilfs, mode); in nilfs_segctor_do_construct()
2127 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE && in nilfs_segctor_do_construct()
2128 nilfs_segbuf_empty(sci->sc_curseg)) { in nilfs_segctor_do_construct()
2129 nilfs_segctor_abort_construction(sci, nilfs, 1); in nilfs_segctor_do_construct()
2133 err = nilfs_segctor_assign(sci, mode); in nilfs_segctor_do_construct()
2137 if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED) in nilfs_segctor_do_construct()
2138 nilfs_segctor_fill_in_file_bmap(sci); in nilfs_segctor_do_construct()
2141 nilfs_sc_cstage_get(sci) >= NILFS_ST_CPFILE) { in nilfs_segctor_do_construct()
2143 nilfs->ns_cpfile, nilfs->ns_cno, sci->sc_root, in nilfs_segctor_do_construct()
2144 sci->sc_nblk_inc + sci->sc_nblk_this_inc, in nilfs_segctor_do_construct()
2145 sci->sc_seg_ctime, in nilfs_segctor_do_construct()
2146 !test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags)); in nilfs_segctor_do_construct()
2150 nilfs_segctor_fill_in_super_root(sci, nilfs); in nilfs_segctor_do_construct()
2152 nilfs_segctor_update_segusage(sci, nilfs->ns_sufile); in nilfs_segctor_do_construct()
2155 nilfs_prepare_write_logs(&sci->sc_segbufs, nilfs->ns_crc_seed); in nilfs_segctor_do_construct()
2157 err = nilfs_segctor_write(sci, nilfs); in nilfs_segctor_do_construct()
2161 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE || in nilfs_segctor_do_construct()
2162 nilfs->ns_blocksize_bits != PAGE_SHIFT) { in nilfs_segctor_do_construct()
2170 err = nilfs_segctor_wait(sci); in nilfs_segctor_do_construct()
2174 } while (nilfs_sc_cstage_get(sci) != NILFS_ST_DONE); in nilfs_segctor_do_construct()
2177 nilfs_segctor_drop_written_files(sci, nilfs); in nilfs_segctor_do_construct()
2182 if (mode == SC_LSEG_SR && nilfs_sc_cstage_get(sci) >= NILFS_ST_IFILE) in nilfs_segctor_do_construct()
2183 nilfs_redirty_inodes(&sci->sc_dirty_files); in nilfs_segctor_do_construct()
2185 nilfs_redirty_inodes(&sci->sc_gc_inodes); in nilfs_segctor_do_construct()
2186 nilfs_segctor_abort_construction(sci, nilfs, err); in nilfs_segctor_do_construct()
2191 * nilfs_segctor_start_timer - set timer of background write
2192 * @sci: nilfs_sc_info
2198 static void nilfs_segctor_start_timer(struct nilfs_sc_info *sci) in nilfs_segctor_start_timer() argument
2200 spin_lock(&sci->sc_state_lock); in nilfs_segctor_start_timer()
2201 if (!(sci->sc_state & NILFS_SEGCTOR_COMMIT)) { in nilfs_segctor_start_timer()
2202 if (sci->sc_task) { in nilfs_segctor_start_timer()
2203 sci->sc_timer.expires = jiffies + sci->sc_interval; in nilfs_segctor_start_timer()
2204 add_timer(&sci->sc_timer); in nilfs_segctor_start_timer()
2206 sci->sc_state |= NILFS_SEGCTOR_COMMIT; in nilfs_segctor_start_timer()
2208 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_start_timer()
2211 static void nilfs_segctor_do_flush(struct nilfs_sc_info *sci, int bn) in nilfs_segctor_do_flush() argument
2213 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_flush()
2214 if (!(sci->sc_flush_request & BIT(bn))) { in nilfs_segctor_do_flush()
2215 unsigned long prev_req = sci->sc_flush_request; in nilfs_segctor_do_flush()
2217 sci->sc_flush_request |= BIT(bn); in nilfs_segctor_do_flush()
2219 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_do_flush()
2221 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_flush()
2225 * nilfs_flush_segment - trigger a segment construction for resource control
2231 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_flush_segment()
2232 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_flush_segment() local
2234 if (!sci || nilfs_doing_construction()) in nilfs_flush_segment()
2236 nilfs_segctor_do_flush(sci, NILFS_MDT_INODE(sb, ino) ? ino : 0); in nilfs_flush_segment()
2247 static int nilfs_segctor_sync(struct nilfs_sc_info *sci) in nilfs_segctor_sync() argument
2264 spin_lock(&sci->sc_state_lock); in nilfs_segctor_sync()
2265 wait_req.seq = ++sci->sc_seq_request; in nilfs_segctor_sync()
2266 add_wait_queue(&sci->sc_wait_request, &wait_req.wq); in nilfs_segctor_sync()
2267 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_sync()
2269 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_sync()
2279 if (!sci->sc_task) in nilfs_segctor_sync()
2290 err = -ERESTARTSYS; in nilfs_segctor_sync()
2293 finish_wait(&sci->sc_wait_request, &wait_req.wq); in nilfs_segctor_sync()
2297 static void nilfs_segctor_wakeup(struct nilfs_sc_info *sci, int err, bool force) in nilfs_segctor_wakeup() argument
2302 spin_lock_irqsave(&sci->sc_wait_request.lock, flags); in nilfs_segctor_wakeup()
2303 list_for_each_entry_safe(wrq, n, &sci->sc_wait_request.head, wq.entry) { in nilfs_segctor_wakeup()
2304 if (!atomic_read(&wrq->done) && in nilfs_segctor_wakeup()
2305 (force || nilfs_cnt32_ge(sci->sc_seq_done, wrq->seq))) { in nilfs_segctor_wakeup()
2306 wrq->err = err; in nilfs_segctor_wakeup()
2307 atomic_set(&wrq->done, 1); in nilfs_segctor_wakeup()
2309 if (atomic_read(&wrq->done)) { in nilfs_segctor_wakeup()
2310 wrq->wq.func(&wrq->wq, in nilfs_segctor_wakeup()
2315 spin_unlock_irqrestore(&sci->sc_wait_request.lock, flags); in nilfs_segctor_wakeup()
2319 * nilfs_construct_segment - construct a logical segment
2324 * * %-EIO - I/O error (including metadata corruption).
2325 * * %-ENOMEM - Insufficient memory available.
2326 * * %-ENOSPC - No space left on device (only in a panic state).
2327 * * %-ERESTARTSYS - Interrupted.
2328 * * %-EROFS - Read only filesystem.
2332 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_construct_segment()
2333 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_construct_segment() local
2334 struct nilfs_transaction_info *ti; in nilfs_construct_segment() local
2336 if (sb_rdonly(sb) || unlikely(!sci)) in nilfs_construct_segment()
2337 return -EROFS; in nilfs_construct_segment()
2340 BUG_ON((ti = current->journal_info) && ti->ti_magic == NILFS_TI_MAGIC); in nilfs_construct_segment()
2342 return nilfs_segctor_sync(sci); in nilfs_construct_segment()
2346 * nilfs_construct_dsync_segment - construct a data-only logical segment
2354 * * %-EIO - I/O error (including metadata corruption).
2355 * * %-ENOMEM - Insufficient memory available.
2356 * * %-ENOSPC - No space left on device (only in a panic state).
2357 * * %-ERESTARTSYS - Interrupted.
2358 * * %-EROFS - Read only filesystem.
2363 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_construct_dsync_segment()
2364 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_construct_dsync_segment() local
2366 struct nilfs_transaction_info ti; in nilfs_construct_dsync_segment() local
2369 if (sb_rdonly(sb) || unlikely(!sci)) in nilfs_construct_dsync_segment()
2370 return -EROFS; in nilfs_construct_dsync_segment()
2372 nilfs_transaction_lock(sb, &ti, 0); in nilfs_construct_dsync_segment()
2375 if (test_bit(NILFS_I_INODE_SYNC, &ii->i_state) || in nilfs_construct_dsync_segment()
2377 test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || in nilfs_construct_dsync_segment()
2380 err = nilfs_segctor_sync(sci); in nilfs_construct_dsync_segment()
2384 spin_lock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2385 if (!test_bit(NILFS_I_QUEUED, &ii->i_state) && in nilfs_construct_dsync_segment()
2386 !test_bit(NILFS_I_BUSY, &ii->i_state)) { in nilfs_construct_dsync_segment()
2387 spin_unlock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2391 spin_unlock(&nilfs->ns_inode_lock); in nilfs_construct_dsync_segment()
2392 sci->sc_dsync_inode = ii; in nilfs_construct_dsync_segment()
2393 sci->sc_dsync_start = start; in nilfs_construct_dsync_segment()
2394 sci->sc_dsync_end = end; in nilfs_construct_dsync_segment()
2396 err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC); in nilfs_construct_dsync_segment()
2398 nilfs->ns_flushed_device = 0; in nilfs_construct_dsync_segment()
2408 * nilfs_segctor_accept - record accepted sequence count of log-write requests
2409 * @sci: segment constructor object
2411 static void nilfs_segctor_accept(struct nilfs_sc_info *sci) in nilfs_segctor_accept() argument
2415 spin_lock(&sci->sc_state_lock); in nilfs_segctor_accept()
2416 sci->sc_seq_accepted = sci->sc_seq_request; in nilfs_segctor_accept()
2417 thread_is_alive = (bool)sci->sc_task; in nilfs_segctor_accept()
2418 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_accept()
2427 del_timer_sync(&sci->sc_timer); in nilfs_segctor_accept()
2431 * nilfs_segctor_notify - notify the result of request to caller threads
2432 * @sci: segment constructor object
2436 static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err) in nilfs_segctor_notify() argument
2439 spin_lock(&sci->sc_state_lock); in nilfs_segctor_notify()
2442 sci->sc_state &= ~NILFS_SEGCTOR_COMMIT; in nilfs_segctor_notify()
2443 sci->sc_seq_done = sci->sc_seq_accepted; in nilfs_segctor_notify()
2444 nilfs_segctor_wakeup(sci, err, false); in nilfs_segctor_notify()
2445 sci->sc_flush_request = 0; in nilfs_segctor_notify()
2448 sci->sc_flush_request &= ~FLUSH_FILE_BIT; in nilfs_segctor_notify()
2450 sci->sc_flush_request &= ~FLUSH_DAT_BIT; in nilfs_segctor_notify()
2452 /* re-enable timer if checkpoint creation was not done */ in nilfs_segctor_notify()
2453 if ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && sci->sc_task && in nilfs_segctor_notify()
2454 time_before(jiffies, sci->sc_timer.expires)) in nilfs_segctor_notify()
2455 add_timer(&sci->sc_timer); in nilfs_segctor_notify()
2457 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_notify()
2461 * nilfs_segctor_construct - form logs and write them to disk
2462 * @sci: segment constructor object
2467 static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_construct() argument
2469 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_construct()
2473 nilfs_segctor_accept(sci); in nilfs_segctor_construct()
2477 if (!nilfs_segctor_confirm(sci)) in nilfs_segctor_construct()
2478 err = nilfs_segctor_do_construct(sci, mode); in nilfs_segctor_construct()
2482 atomic_set(&nilfs->ns_ndirtyblks, 0); in nilfs_segctor_construct()
2483 if (test_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags) && in nilfs_segctor_construct()
2485 down_write(&nilfs->ns_sem); in nilfs_segctor_construct()
2486 err = -EIO; in nilfs_segctor_construct()
2487 sbp = nilfs_prepare_super(sci->sc_super, in nilfs_segctor_construct()
2491 err = nilfs_commit_super(sci->sc_super, in nilfs_segctor_construct()
2494 up_write(&nilfs->ns_sem); in nilfs_segctor_construct()
2498 nilfs_segctor_notify(sci, mode, err); in nilfs_segctor_construct()
2504 struct nilfs_sc_info *sci = from_timer(sci, t, sc_timer); in nilfs_construction_timeout() local
2506 wake_up_process(sci->sc_task); in nilfs_construction_timeout()
2515 if (!test_bit(NILFS_I_UPDATED, &ii->i_state)) in nilfs_remove_written_gcinodes()
2517 list_del_init(&ii->i_dirty); in nilfs_remove_written_gcinodes()
2518 truncate_inode_pages(&ii->vfs_inode.i_data, 0); in nilfs_remove_written_gcinodes()
2519 nilfs_btnode_cache_clear(ii->i_assoc_inode->i_mapping); in nilfs_remove_written_gcinodes()
2520 iput(&ii->vfs_inode); in nilfs_remove_written_gcinodes()
2527 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_clean_segments()
2528 struct nilfs_sc_info *sci = nilfs->ns_writer; in nilfs_clean_segments() local
2529 struct nilfs_transaction_info ti; in nilfs_clean_segments() local
2532 if (unlikely(!sci)) in nilfs_clean_segments()
2533 return -EROFS; in nilfs_clean_segments()
2535 nilfs_transaction_lock(sb, &ti, 1); in nilfs_clean_segments()
2537 err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2543 nilfs_mdt_restore_from_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2547 sci->sc_freesegs = kbufs[4]; in nilfs_clean_segments()
2548 sci->sc_nfreesegs = argv[4].v_nmembs; in nilfs_clean_segments()
2549 list_splice_tail_init(&nilfs->ns_gc_inodes, &sci->sc_gc_inodes); in nilfs_clean_segments()
2552 err = nilfs_segctor_construct(sci, SC_LSEG_SR); in nilfs_clean_segments()
2553 nilfs_remove_written_gcinodes(nilfs, &sci->sc_gc_inodes); in nilfs_clean_segments()
2560 schedule_timeout(sci->sc_interval); in nilfs_clean_segments()
2563 int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs, in nilfs_clean_segments()
2564 sci->sc_nfreesegs); in nilfs_clean_segments()
2574 sci->sc_freesegs = NULL; in nilfs_clean_segments()
2575 sci->sc_nfreesegs = 0; in nilfs_clean_segments()
2576 nilfs_mdt_clear_shadow_map(nilfs->ns_dat); in nilfs_clean_segments()
2581 static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode) in nilfs_segctor_thread_construct() argument
2583 struct nilfs_transaction_info ti; in nilfs_segctor_thread_construct() local
2585 nilfs_transaction_lock(sci->sc_super, &ti, 0); in nilfs_segctor_thread_construct()
2586 nilfs_segctor_construct(sci, mode); in nilfs_segctor_thread_construct()
2593 if (test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) in nilfs_segctor_thread_construct()
2594 nilfs_segctor_start_timer(sci); in nilfs_segctor_thread_construct()
2596 nilfs_transaction_unlock(sci->sc_super); in nilfs_segctor_thread_construct()
2599 static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci) in nilfs_segctor_do_immediate_flush() argument
2603 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2604 mode = (sci->sc_flush_request & FLUSH_DAT_BIT) ? in nilfs_segctor_do_immediate_flush()
2606 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2609 nilfs_segctor_do_construct(sci, mode); in nilfs_segctor_do_immediate_flush()
2611 spin_lock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2612 sci->sc_flush_request &= (mode == SC_FLUSH_FILE) ? in nilfs_segctor_do_immediate_flush()
2614 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_do_immediate_flush()
2616 clear_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags); in nilfs_segctor_do_immediate_flush()
2619 static int nilfs_segctor_flush_mode(struct nilfs_sc_info *sci) in nilfs_segctor_flush_mode() argument
2621 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) || in nilfs_segctor_flush_mode()
2622 time_before(jiffies, sci->sc_lseg_stime + sci->sc_mjcp_freq)) { in nilfs_segctor_flush_mode()
2623 if (!(sci->sc_flush_request & ~FLUSH_FILE_BIT)) in nilfs_segctor_flush_mode()
2625 else if (!(sci->sc_flush_request & ~FLUSH_DAT_BIT)) in nilfs_segctor_flush_mode()
2632 * nilfs_log_write_required - determine whether log writing is required
2633 * @sci: nilfs_sc_info struct
2639 static bool nilfs_log_write_required(struct nilfs_sc_info *sci, int *modep) in nilfs_log_write_required() argument
2643 spin_lock(&sci->sc_state_lock); in nilfs_log_write_required()
2644 timedout = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && in nilfs_log_write_required()
2645 time_after_eq(jiffies, sci->sc_timer.expires)); in nilfs_log_write_required()
2646 if (timedout || sci->sc_seq_request != sci->sc_seq_done) in nilfs_log_write_required()
2648 else if (sci->sc_flush_request) in nilfs_log_write_required()
2649 *modep = nilfs_segctor_flush_mode(sci); in nilfs_log_write_required()
2653 spin_unlock(&sci->sc_state_lock); in nilfs_log_write_required()
2658 * nilfs_segctor_thread - main loop of the log writer thread
2670 struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg; in nilfs_segctor_thread() local
2671 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_thread()
2673 nilfs_info(sci->sc_super, in nilfs_segctor_thread()
2675 sci->sc_interval / HZ, sci->sc_mjcp_freq / HZ); in nilfs_segctor_thread()
2689 prepare_to_wait(&sci->sc_wait_daemon, &wait, in nilfs_segctor_thread()
2691 should_write = nilfs_log_write_required(sci, &mode); in nilfs_segctor_thread()
2694 finish_wait(&sci->sc_wait_daemon, &wait); in nilfs_segctor_thread()
2700 nilfs_segctor_thread_construct(sci, mode); in nilfs_segctor_thread()
2704 spin_lock(&sci->sc_state_lock); in nilfs_segctor_thread()
2705 sci->sc_task = NULL; in nilfs_segctor_thread()
2706 timer_shutdown_sync(&sci->sc_timer); in nilfs_segctor_thread()
2707 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_thread()
2712 * Setup & clean-up functions
2717 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_segctor_new()
2718 struct nilfs_sc_info *sci; in nilfs_segctor_new() local
2720 sci = kzalloc(sizeof(*sci), GFP_KERNEL); in nilfs_segctor_new()
2721 if (!sci) in nilfs_segctor_new()
2724 sci->sc_super = sb; in nilfs_segctor_new()
2727 sci->sc_root = root; in nilfs_segctor_new()
2729 init_waitqueue_head(&sci->sc_wait_request); in nilfs_segctor_new()
2730 init_waitqueue_head(&sci->sc_wait_daemon); in nilfs_segctor_new()
2731 spin_lock_init(&sci->sc_state_lock); in nilfs_segctor_new()
2732 INIT_LIST_HEAD(&sci->sc_dirty_files); in nilfs_segctor_new()
2733 INIT_LIST_HEAD(&sci->sc_segbufs); in nilfs_segctor_new()
2734 INIT_LIST_HEAD(&sci->sc_write_logs); in nilfs_segctor_new()
2735 INIT_LIST_HEAD(&sci->sc_gc_inodes); in nilfs_segctor_new()
2736 INIT_LIST_HEAD(&sci->sc_iput_queue); in nilfs_segctor_new()
2737 INIT_WORK(&sci->sc_iput_work, nilfs_iput_work_func); in nilfs_segctor_new()
2739 sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT; in nilfs_segctor_new()
2740 sci->sc_mjcp_freq = HZ * NILFS_SC_DEFAULT_SR_FREQ; in nilfs_segctor_new()
2741 sci->sc_watermark = NILFS_SC_DEFAULT_WATERMARK; in nilfs_segctor_new()
2743 if (nilfs->ns_interval) in nilfs_segctor_new()
2744 sci->sc_interval = HZ * nilfs->ns_interval; in nilfs_segctor_new()
2745 if (nilfs->ns_watermark) in nilfs_segctor_new()
2746 sci->sc_watermark = nilfs->ns_watermark; in nilfs_segctor_new()
2747 return sci; in nilfs_segctor_new()
2750 static void nilfs_segctor_write_out(struct nilfs_sc_info *sci) in nilfs_segctor_write_out() argument
2759 struct nilfs_transaction_info ti; in nilfs_segctor_write_out() local
2761 nilfs_transaction_lock(sci->sc_super, &ti, 0); in nilfs_segctor_write_out()
2762 ret = nilfs_segctor_construct(sci, SC_LSEG_SR); in nilfs_segctor_write_out()
2763 nilfs_transaction_unlock(sci->sc_super); in nilfs_segctor_write_out()
2765 flush_work(&sci->sc_iput_work); in nilfs_segctor_write_out()
2767 } while (ret && ret != -EROFS && retrycount-- > 0); in nilfs_segctor_write_out()
2771 * nilfs_segctor_destroy - destroy the segment constructor.
2772 * @sci: nilfs_sc_info
2778 static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) in nilfs_segctor_destroy() argument
2780 struct the_nilfs *nilfs = sci->sc_super->s_fs_info; in nilfs_segctor_destroy()
2783 up_write(&nilfs->ns_segctor_sem); in nilfs_segctor_destroy()
2785 if (sci->sc_task) { in nilfs_segctor_destroy()
2786 wake_up(&sci->sc_wait_daemon); in nilfs_segctor_destroy()
2787 kthread_stop(sci->sc_task); in nilfs_segctor_destroy()
2790 spin_lock(&sci->sc_state_lock); in nilfs_segctor_destroy()
2791 flag = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) || sci->sc_flush_request in nilfs_segctor_destroy()
2792 || sci->sc_seq_request != sci->sc_seq_done); in nilfs_segctor_destroy()
2793 spin_unlock(&sci->sc_state_lock); in nilfs_segctor_destroy()
2800 nilfs_segctor_wakeup(sci, 0, true); in nilfs_segctor_destroy()
2802 if (flush_work(&sci->sc_iput_work)) in nilfs_segctor_destroy()
2805 if (flag || !nilfs_segctor_confirm(sci)) in nilfs_segctor_destroy()
2806 nilfs_segctor_write_out(sci); in nilfs_segctor_destroy()
2808 if (!list_empty(&sci->sc_dirty_files)) { in nilfs_segctor_destroy()
2809 nilfs_warn(sci->sc_super, in nilfs_segctor_destroy()
2811 nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1); in nilfs_segctor_destroy()
2814 if (!list_empty(&sci->sc_iput_queue)) { in nilfs_segctor_destroy()
2815 nilfs_warn(sci->sc_super, in nilfs_segctor_destroy()
2817 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 1); in nilfs_segctor_destroy()
2820 WARN_ON(!list_empty(&sci->sc_segbufs)); in nilfs_segctor_destroy()
2821 WARN_ON(!list_empty(&sci->sc_write_logs)); in nilfs_segctor_destroy()
2823 nilfs_put_root(sci->sc_root); in nilfs_segctor_destroy()
2825 down_write(&nilfs->ns_segctor_sem); in nilfs_segctor_destroy()
2827 kfree(sci); in nilfs_segctor_destroy()
2831 * nilfs_attach_log_writer - attach log writer
2840 * * %-EINTR - Log writer thread creation failed due to interruption.
2841 * * %-ENOMEM - Insufficient memory available.
2845 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_attach_log_writer()
2846 struct nilfs_sc_info *sci; in nilfs_attach_log_writer() local
2850 if (nilfs->ns_writer) { in nilfs_attach_log_writer()
2852 * This happens if the filesystem is made read-only by in nilfs_attach_log_writer()
2860 sci = nilfs_segctor_new(sb, root); in nilfs_attach_log_writer()
2861 if (unlikely(!sci)) in nilfs_attach_log_writer()
2862 return -ENOMEM; in nilfs_attach_log_writer()
2864 nilfs->ns_writer = sci; in nilfs_attach_log_writer()
2865 t = kthread_create(nilfs_segctor_thread, sci, "segctord"); in nilfs_attach_log_writer()
2872 sci->sc_task = t; in nilfs_attach_log_writer()
2873 timer_setup(&sci->sc_timer, nilfs_construction_timeout, 0); in nilfs_attach_log_writer()
2875 wake_up_process(sci->sc_task); in nilfs_attach_log_writer()
2880 * nilfs_detach_log_writer - destroy log writer
2888 struct the_nilfs *nilfs = sb->s_fs_info; in nilfs_detach_log_writer()
2891 down_write(&nilfs->ns_segctor_sem); in nilfs_detach_log_writer()
2892 if (nilfs->ns_writer) { in nilfs_detach_log_writer()
2893 nilfs_segctor_destroy(nilfs->ns_writer); in nilfs_detach_log_writer()
2894 nilfs->ns_writer = NULL; in nilfs_detach_log_writer()
2899 spin_lock(&nilfs->ns_inode_lock); in nilfs_detach_log_writer()
2900 if (!list_empty(&nilfs->ns_dirty_files)) { in nilfs_detach_log_writer()
2901 list_splice_init(&nilfs->ns_dirty_files, &garbage_list); in nilfs_detach_log_writer()
2905 spin_unlock(&nilfs->ns_inode_lock); in nilfs_detach_log_writer()
2906 up_write(&nilfs->ns_segctor_sem); in nilfs_detach_log_writer()