Lines Matching defs:sci
90 static inline void nilfs_sc_cstage_inc(struct nilfs_sc_info *sci)
92 sci->sc_stage.scnt++;
93 trace_nilfs2_collection_stage_transition(sci);
96 static inline void nilfs_sc_cstage_set(struct nilfs_sc_info *sci, int next_scnt)
98 sci->sc_stage.scnt = next_scnt;
99 trace_nilfs2_collection_stage_transition(sci);
102 static inline int nilfs_sc_cstage_get(struct nilfs_sc_info *sci)
104 return sci->sc_stage.scnt;
271 struct nilfs_sc_info *sci = nilfs->ns_writer;
274 nilfs_segctor_start_timer(sci);
275 if (atomic_read(&nilfs->ns_ndirtyblks) > sci->sc_watermark)
276 nilfs_segctor_do_flush(sci, 0);
318 struct nilfs_sc_info *sci = nilfs->ns_writer;
320 if (sb_rdonly(sb) || unlikely(!sci) || !sci->sc_flush_request)
323 set_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags);
327 if (sci->sc_flush_request &&
328 test_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags)) {
332 nilfs_segctor_do_immediate_flush(sci);
344 struct nilfs_sc_info *sci = nilfs->ns_writer;
358 if (!test_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags))
361 nilfs_segctor_do_immediate_flush(sci);
388 static void *nilfs_segctor_map_segsum_entry(struct nilfs_sc_info *sci,
392 struct nilfs_segment_buffer *segbuf = sci->sc_curseg;
393 unsigned int blocksize = sci->sc_super->s_blocksize;
409 * @sci: nilfs_sc_info
413 static int nilfs_segctor_reset_segment_buffer(struct nilfs_sc_info *sci)
415 struct nilfs_segment_buffer *segbuf = sci->sc_curseg;
423 err = nilfs_segbuf_reset(segbuf, flags, sci->sc_seg_ctime, sci->sc_cno);
429 sci->sc_finfo_ptr.bh = sumbh; sci->sc_finfo_ptr.offset = sumbytes;
430 sci->sc_binfo_ptr.bh = sumbh; sci->sc_binfo_ptr.offset = sumbytes;
431 sci->sc_blk_cnt = sci->sc_datablk_cnt = 0;
437 * @sci: segment constructor object
442 static void nilfs_segctor_zeropad_segsum(struct nilfs_sc_info *sci)
446 ssp = sci->sc_blk_cnt > 0 ? &sci->sc_binfo_ptr : &sci->sc_finfo_ptr;
452 static int nilfs_segctor_feed_segment(struct nilfs_sc_info *sci)
454 sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks;
455 if (NILFS_SEGBUF_IS_LAST(sci->sc_curseg, &sci->sc_segbufs))
460 nilfs_segctor_zeropad_segsum(sci);
461 sci->sc_curseg = NILFS_NEXT_SEGBUF(sci->sc_curseg);
462 return nilfs_segctor_reset_segment_buffer(sci);
465 static int nilfs_segctor_add_super_root(struct nilfs_sc_info *sci)
467 struct nilfs_segment_buffer *segbuf = sci->sc_curseg;
471 err = nilfs_segctor_feed_segment(sci);
474 segbuf = sci->sc_curseg;
486 struct nilfs_sc_info *sci, const struct nilfs_segsum_pointer *ssp,
489 unsigned int blocksize = sci->sc_super->s_blocksize;
493 (!sci->sc_blk_cnt ? sizeof(struct nilfs_finfo) : 0) >
497 static void nilfs_segctor_begin_finfo(struct nilfs_sc_info *sci,
500 sci->sc_curseg->sb_sum.nfinfo++;
501 sci->sc_binfo_ptr = sci->sc_finfo_ptr;
503 sci, &sci->sc_binfo_ptr, sizeof(struct nilfs_finfo));
506 !test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags))
507 set_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags);
511 static void nilfs_segctor_end_finfo(struct nilfs_sc_info *sci,
519 if (sci->sc_blk_cnt == 0)
529 cno = sci->sc_cno;
531 finfo = nilfs_segctor_map_segsum_entry(sci, &sci->sc_finfo_ptr,
534 finfo->fi_nblocks = cpu_to_le32(sci->sc_blk_cnt);
535 finfo->fi_ndatablk = cpu_to_le32(sci->sc_datablk_cnt);
538 segbuf = sci->sc_curseg;
539 segbuf->sb_sum.sumbytes = sci->sc_binfo_ptr.offset +
540 sci->sc_super->s_blocksize * (segbuf->sb_sum.nsumblk - 1);
541 sci->sc_finfo_ptr = sci->sc_binfo_ptr;
542 sci->sc_blk_cnt = sci->sc_datablk_cnt = 0;
545 static int nilfs_segctor_add_file_block(struct nilfs_sc_info *sci,
554 segbuf = sci->sc_curseg;
556 sci, &sci->sc_binfo_ptr, binfo_size);
558 nilfs_segctor_end_finfo(sci, inode);
559 err = nilfs_segctor_feed_segment(sci);
565 nilfs_segctor_zeropad_segsum(sci);
570 if (sci->sc_blk_cnt == 0)
571 nilfs_segctor_begin_finfo(sci, inode);
573 nilfs_segctor_map_segsum_entry(sci, &sci->sc_binfo_ptr, binfo_size);
576 sci->sc_blk_cnt++;
584 static int nilfs_collect_file_data(struct nilfs_sc_info *sci,
593 err = nilfs_segctor_add_file_block(sci, bh, inode,
596 sci->sc_datablk_cnt++;
600 static int nilfs_collect_file_node(struct nilfs_sc_info *sci,
607 static int nilfs_collect_file_bmap(struct nilfs_sc_info *sci,
612 return nilfs_segctor_add_file_block(sci, bh, inode, sizeof(__le64));
615 static void nilfs_write_file_data_binfo(struct nilfs_sc_info *sci,
620 sci, ssp, sizeof(*binfo_v));
624 static void nilfs_write_file_node_binfo(struct nilfs_sc_info *sci,
629 sci, ssp, sizeof(*vblocknr));
641 static int nilfs_collect_dat_data(struct nilfs_sc_info *sci,
650 err = nilfs_segctor_add_file_block(sci, bh, inode, sizeof(__le64));
652 sci->sc_datablk_cnt++;
656 static int nilfs_collect_dat_bmap(struct nilfs_sc_info *sci,
660 return nilfs_segctor_add_file_block(sci, bh, inode,
664 static void nilfs_write_dat_data_binfo(struct nilfs_sc_info *sci,
668 __le64 *blkoff = nilfs_segctor_map_segsum_entry(sci, ssp,
673 static void nilfs_write_dat_node_binfo(struct nilfs_sc_info *sci,
678 nilfs_segctor_map_segsum_entry(sci, ssp, sizeof(*binfo_dat));
830 struct nilfs_sc_info *sci = container_of(work, struct nilfs_sc_info,
832 struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
834 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 0);
853 static int nilfs_segctor_clean(struct nilfs_sc_info *sci)
855 return list_empty(&sci->sc_dirty_files) &&
856 !test_bit(NILFS_SC_DIRTY, &sci->sc_flags) &&
857 sci->sc_nfreesegs == 0 &&
858 (!nilfs_doing_gc() || list_empty(&sci->sc_gc_inodes));
861 static int nilfs_segctor_confirm(struct nilfs_sc_info *sci)
863 struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
866 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root))
867 set_bit(NILFS_SC_DIRTY, &sci->sc_flags);
870 if (list_empty(&nilfs->ns_dirty_files) && nilfs_segctor_clean(sci))
877 static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci)
879 struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
881 nilfs_mdt_clear_dirty(sci->sc_root->ifile);
904 static void nilfs_segctor_fill_in_file_bmap(struct nilfs_sc_info *sci)
908 list_for_each_entry(ii, &sci->sc_dirty_files, i_dirty) {
909 nilfs_fill_in_file_bmap(sci->sc_root->ifile, ii);
941 static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci,
948 bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root;
959 nilfs->ns_nongc_ctime : sci->sc_seg_ctime);
997 static int nilfs_segctor_apply_buffers(struct nilfs_sc_info *sci,
1010 err = collect(sci, bh, inode);
1028 static size_t nilfs_segctor_buffer_rest(struct nilfs_sc_info *sci)
1031 return sci->sc_segbuf_nblocks -
1032 (sci->sc_nblk_this_inc + sci->sc_curseg->sb_sum.nblocks);
1035 static int nilfs_segctor_scan_file(struct nilfs_sc_info *sci,
1043 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) {
1044 size_t n, rest = nilfs_segctor_buffer_rest(sci);
1050 sci, inode, &data_buffers,
1058 if (!(sci->sc_stage.flags & NILFS_CF_NODE)) {
1060 sci, inode, &data_buffers, sc_ops->collect_data);
1064 sci, inode, &node_buffers, NULL);
1067 sci->sc_stage.flags |= NILFS_CF_NODE;
1071 sci, inode, &node_buffers, sc_ops->collect_node);
1077 sci, inode, &node_buffers, sc_ops->collect_bmap);
1081 nilfs_segctor_end_finfo(sci, inode);
1082 sci->sc_stage.flags &= ~NILFS_CF_NODE;
1088 static int nilfs_segctor_scan_file_dsync(struct nilfs_sc_info *sci,
1092 size_t n, rest = nilfs_segctor_buffer_rest(sci);
1096 sci->sc_dsync_start,
1097 sci->sc_dsync_end);
1099 err = nilfs_segctor_apply_buffers(sci, inode, &data_buffers,
1102 nilfs_segctor_end_finfo(sci, inode);
1163 static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode)
1165 struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
1170 switch (nilfs_sc_cstage_get(sci)) {
1173 sci->sc_stage.flags = 0;
1175 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags)) {
1176 sci->sc_nblk_inc = 0;
1177 sci->sc_curseg->sb_sum.flags = NILFS_SS_LOGBGN;
1179 nilfs_sc_cstage_set(sci, NILFS_ST_DSYNC);
1184 sci->sc_stage.dirty_file_ptr = NULL;
1185 sci->sc_stage.gc_inode_ptr = NULL;
1187 nilfs_sc_cstage_set(sci, NILFS_ST_DAT);
1190 nilfs_sc_cstage_inc(sci);
1194 head = &sci->sc_gc_inodes;
1195 ii = list_prepare_entry(sci->sc_stage.gc_inode_ptr,
1199 sci, &ii->vfs_inode,
1202 sci->sc_stage.gc_inode_ptr = list_entry(
1210 sci->sc_stage.gc_inode_ptr = NULL;
1212 nilfs_sc_cstage_inc(sci);
1215 head = &sci->sc_dirty_files;
1216 ii = list_prepare_entry(sci->sc_stage.dirty_file_ptr, head,
1221 err = nilfs_segctor_scan_file(sci, &ii->vfs_inode,
1224 sci->sc_stage.dirty_file_ptr =
1230 /* sci->sc_stage.dirty_file_ptr = NILFS_I(inode); */
1233 sci->sc_stage.dirty_file_ptr = NULL;
1235 nilfs_sc_cstage_set(sci, NILFS_ST_DONE);
1238 nilfs_sc_cstage_inc(sci);
1239 sci->sc_stage.flags |= NILFS_CF_IFILE_STARTED;
1242 err = nilfs_segctor_scan_file(sci, sci->sc_root->ifile,
1246 nilfs_sc_cstage_inc(sci);
1254 err = nilfs_segctor_scan_file(sci, nilfs->ns_cpfile,
1258 nilfs_sc_cstage_inc(sci);
1261 err = nilfs_free_segments(nilfs, sci->sc_freesegs,
1262 sci->sc_nfreesegs);
1265 sci->sc_stage.flags |= NILFS_CF_SUFREED;
1267 err = nilfs_segctor_scan_file(sci, nilfs->ns_sufile,
1271 nilfs_sc_cstage_inc(sci);
1275 err = nilfs_segctor_scan_file(sci, nilfs->ns_dat,
1280 nilfs_sc_cstage_set(sci, NILFS_ST_DONE);
1283 nilfs_sc_cstage_inc(sci);
1288 err = nilfs_segctor_add_super_root(sci);
1293 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND;
1294 nilfs_sc_cstage_set(sci, NILFS_ST_DONE);
1298 sci->sc_curseg->sb_sum.flags |= NILFS_SS_SYNDT;
1299 ii = sci->sc_dsync_inode;
1303 err = nilfs_segctor_scan_file_dsync(sci, &ii->vfs_inode);
1306 sci->sc_curseg->sb_sum.flags |= NILFS_SS_LOGEND;
1307 nilfs_sc_cstage_set(sci, NILFS_ST_DONE);
1321 * @sci: nilfs_sc_info
1326 static int nilfs_segctor_begin_construction(struct nilfs_sc_info *sci,
1333 segbuf = nilfs_segbuf_new(sci->sc_super);
1337 if (list_empty(&sci->sc_write_logs)) {
1353 prev = NILFS_LAST_SEGBUF(&sci->sc_write_logs);
1376 BUG_ON(!list_empty(&sci->sc_segbufs));
1377 list_add_tail(&segbuf->sb_list, &sci->sc_segbufs);
1378 sci->sc_segbuf_nblocks = segbuf->sb_rest_blocks;
1386 static int nilfs_segctor_extend_segments(struct nilfs_sc_info *sci,
1395 prev = NILFS_LAST_SEGBUF(&sci->sc_segbufs);
1409 segbuf = nilfs_segbuf_new(sci->sc_super);
1415 sci->sc_segbuf_nblocks += segbuf->sb_rest_blocks;
1428 list_splice_tail(&list, &sci->sc_segbufs);
1481 static void nilfs_segctor_update_segusage(struct nilfs_sc_info *sci,
1488 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) {
1493 sci->sc_seg_ctime);
1516 static void nilfs_segctor_truncate_segments(struct nilfs_sc_info *sci,
1523 list_for_each_entry_continue(segbuf, &sci->sc_segbufs, sb_list) {
1524 sci->sc_segbuf_nblocks -= segbuf->sb_rest_blocks;
1528 nilfs_truncate_logs(&sci->sc_segbufs, last);
1532 static int nilfs_segctor_collect(struct nilfs_sc_info *sci,
1535 struct nilfs_cstage prev_stage = sci->sc_stage;
1540 sci->sc_nblk_this_inc = 0;
1541 sci->sc_curseg = NILFS_FIRST_SEGBUF(&sci->sc_segbufs);
1543 err = nilfs_segctor_reset_segment_buffer(sci);
1547 err = nilfs_segctor_collect_blocks(sci, mode);
1548 sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks;
1557 nilfs_sc_cstage_get(sci) < NILFS_ST_CPFILE)
1560 nilfs_clear_logs(&sci->sc_segbufs);
1562 if (sci->sc_stage.flags & NILFS_CF_SUFREED) {
1564 sci->sc_freesegs,
1565 sci->sc_nfreesegs,
1568 sci->sc_stage.flags &= ~NILFS_CF_SUFREED;
1571 err = nilfs_segctor_extend_segments(sci, nilfs, nadd);
1576 sci->sc_stage = prev_stage;
1578 nilfs_segctor_zeropad_segsum(sci);
1579 nilfs_segctor_truncate_segments(sci, sci->sc_curseg, nilfs->ns_sufile);
1596 nilfs_segctor_update_payload_blocknr(struct nilfs_sc_info *sci,
1624 sci, &ssp, sizeof(*finfo));
1649 sc_op->write_data_binfo(sci, &ssp, &binfo);
1651 sc_op->write_node_binfo(sci, &ssp, &binfo);
1668 static int nilfs_segctor_assign(struct nilfs_sc_info *sci, int mode)
1673 list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) {
1674 err = nilfs_segctor_update_payload_blocknr(sci, segbuf, mode);
1773 static int nilfs_segctor_write(struct nilfs_sc_info *sci,
1778 ret = nilfs_write_logs(&sci->sc_segbufs, nilfs);
1779 list_splice_tail_init(&sci->sc_segbufs, &sci->sc_write_logs);
1859 static void nilfs_segctor_abort_construction(struct nilfs_sc_info *sci,
1865 list_splice_tail_init(&sci->sc_write_logs, &logs);
1869 list_splice_tail_init(&sci->sc_segbufs, &logs);
1876 if (sci->sc_stage.flags & NILFS_CF_SUFREED) {
1878 sci->sc_freesegs,
1879 sci->sc_nfreesegs,
1898 static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci)
1902 struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
1905 list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) {
1956 set_bit(NILFS_SC_UNCLOSED, &sci->sc_flags);
1957 sci->sc_lseg_stime = jiffies;
1960 clear_bit(NILFS_SC_UNCLOSED, &sci->sc_flags);
1972 nilfs_drop_collected_inodes(&sci->sc_dirty_files);
1975 nilfs_drop_collected_inodes(&sci->sc_gc_inodes);
1977 nilfs->ns_nongc_ctime = sci->sc_seg_ctime;
1979 sci->sc_nblk_inc += sci->sc_nblk_this_inc;
1981 segbuf = NILFS_LAST_SEGBUF(&sci->sc_write_logs);
1989 clear_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags);
1990 clear_bit(NILFS_SC_DIRTY, &sci->sc_flags);
1991 set_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags);
1992 nilfs_segctor_clear_metadata_dirty(sci);
1994 clear_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags);
1997 static int nilfs_segctor_wait(struct nilfs_sc_info *sci)
2001 ret = nilfs_wait_on_logs(&sci->sc_write_logs);
2003 nilfs_segctor_complete_write(sci);
2004 nilfs_destroy_logs(&sci->sc_write_logs);
2009 static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci,
2013 struct inode *ifile = sci->sc_root->ifile;
2026 nilfs_warn(sci->sc_super,
2045 list_move_tail(&ii->i_dirty, &sci->sc_dirty_files);
2052 static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci,
2056 int during_mount = !(sci->sc_super->s_flags & SB_ACTIVE);
2060 list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) {
2074 list_add_tail(&ii->i_dirty, &sci->sc_iput_queue);
2085 schedule_work(&sci->sc_iput_work);
2091 static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
2093 struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
2096 if (sb_rdonly(sci->sc_super))
2099 nilfs_sc_cstage_set(sci, NILFS_ST_INIT);
2100 sci->sc_cno = nilfs->ns_cno;
2102 err = nilfs_segctor_collect_dirty_files(sci, nilfs);
2106 if (nilfs_test_metadata_dirty(nilfs, sci->sc_root))
2107 set_bit(NILFS_SC_DIRTY, &sci->sc_flags);
2109 if (nilfs_segctor_clean(sci))
2113 sci->sc_stage.flags &= ~NILFS_CF_HISTORY_MASK;
2115 err = nilfs_segctor_begin_construction(sci, nilfs);
2120 sci->sc_seg_ctime = ktime_get_real_seconds();
2122 err = nilfs_segctor_collect(sci, nilfs, mode);
2127 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE &&
2128 nilfs_segbuf_empty(sci->sc_curseg)) {
2129 nilfs_segctor_abort_construction(sci, nilfs, 1);
2133 err = nilfs_segctor_assign(sci, mode);
2137 if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED)
2138 nilfs_segctor_fill_in_file_bmap(sci);
2141 nilfs_sc_cstage_get(sci) >= NILFS_ST_CPFILE) {
2143 nilfs->ns_cpfile, nilfs->ns_cno, sci->sc_root,
2144 sci->sc_nblk_inc + sci->sc_nblk_this_inc,
2145 sci->sc_seg_ctime,
2146 !test_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags));
2150 nilfs_segctor_fill_in_super_root(sci, nilfs);
2152 nilfs_segctor_update_segusage(sci, nilfs->ns_sufile);
2155 nilfs_prepare_write_logs(&sci->sc_segbufs, nilfs->ns_crc_seed);
2157 err = nilfs_segctor_write(sci, nilfs);
2161 if (nilfs_sc_cstage_get(sci) == NILFS_ST_DONE ||
2170 err = nilfs_segctor_wait(sci);
2174 } while (nilfs_sc_cstage_get(sci) != NILFS_ST_DONE);
2177 nilfs_segctor_drop_written_files(sci, nilfs);
2182 if (mode == SC_LSEG_SR && nilfs_sc_cstage_get(sci) >= NILFS_ST_IFILE)
2183 nilfs_redirty_inodes(&sci->sc_dirty_files);
2185 nilfs_redirty_inodes(&sci->sc_gc_inodes);
2186 nilfs_segctor_abort_construction(sci, nilfs, err);
2192 * @sci: nilfs_sc_info
2198 static void nilfs_segctor_start_timer(struct nilfs_sc_info *sci)
2200 spin_lock(&sci->sc_state_lock);
2201 if (!(sci->sc_state & NILFS_SEGCTOR_COMMIT)) {
2202 if (sci->sc_task) {
2203 sci->sc_timer.expires = jiffies + sci->sc_interval;
2204 add_timer(&sci->sc_timer);
2206 sci->sc_state |= NILFS_SEGCTOR_COMMIT;
2208 spin_unlock(&sci->sc_state_lock);
2211 static void nilfs_segctor_do_flush(struct nilfs_sc_info *sci, int bn)
2213 spin_lock(&sci->sc_state_lock);
2214 if (!(sci->sc_flush_request & BIT(bn))) {
2215 unsigned long prev_req = sci->sc_flush_request;
2217 sci->sc_flush_request |= BIT(bn);
2219 wake_up(&sci->sc_wait_daemon);
2221 spin_unlock(&sci->sc_state_lock);
2232 struct nilfs_sc_info *sci = nilfs->ns_writer;
2234 if (!sci || nilfs_doing_construction())
2236 nilfs_segctor_do_flush(sci, NILFS_MDT_INODE(sb, ino) ? ino : 0);
2247 static int nilfs_segctor_sync(struct nilfs_sc_info *sci)
2264 spin_lock(&sci->sc_state_lock);
2265 wait_req.seq = ++sci->sc_seq_request;
2266 add_wait_queue(&sci->sc_wait_request, &wait_req.wq);
2267 spin_unlock(&sci->sc_state_lock);
2269 wake_up(&sci->sc_wait_daemon);
2279 if (!sci->sc_task)
2293 finish_wait(&sci->sc_wait_request, &wait_req.wq);
2297 static void nilfs_segctor_wakeup(struct nilfs_sc_info *sci, int err, bool force)
2302 spin_lock_irqsave(&sci->sc_wait_request.lock, flags);
2303 list_for_each_entry_safe(wrq, n, &sci->sc_wait_request.head, wq.entry) {
2305 (force || nilfs_cnt32_ge(sci->sc_seq_done, wrq->seq))) {
2315 spin_unlock_irqrestore(&sci->sc_wait_request.lock, flags);
2333 struct nilfs_sc_info *sci = nilfs->ns_writer;
2336 if (sb_rdonly(sb) || unlikely(!sci))
2342 return nilfs_segctor_sync(sci);
2364 struct nilfs_sc_info *sci = nilfs->ns_writer;
2369 if (sb_rdonly(sb) || unlikely(!sci))
2377 test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) ||
2380 err = nilfs_segctor_sync(sci);
2392 sci->sc_dsync_inode = ii;
2393 sci->sc_dsync_start = start;
2394 sci->sc_dsync_end = end;
2396 err = nilfs_segctor_do_construct(sci, SC_LSEG_DSYNC);
2409 * @sci: segment constructor object
2411 static void nilfs_segctor_accept(struct nilfs_sc_info *sci)
2415 spin_lock(&sci->sc_state_lock);
2416 sci->sc_seq_accepted = sci->sc_seq_request;
2417 thread_is_alive = (bool)sci->sc_task;
2418 spin_unlock(&sci->sc_state_lock);
2427 del_timer_sync(&sci->sc_timer);
2432 * @sci: segment constructor object
2436 static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err)
2439 spin_lock(&sci->sc_state_lock);
2442 sci->sc_state &= ~NILFS_SEGCTOR_COMMIT;
2443 sci->sc_seq_done = sci->sc_seq_accepted;
2444 nilfs_segctor_wakeup(sci, err, false);
2445 sci->sc_flush_request = 0;
2448 sci->sc_flush_request &= ~FLUSH_FILE_BIT;
2450 sci->sc_flush_request &= ~FLUSH_DAT_BIT;
2453 if ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && sci->sc_task &&
2454 time_before(jiffies, sci->sc_timer.expires))
2455 add_timer(&sci->sc_timer);
2457 spin_unlock(&sci->sc_state_lock);
2462 * @sci: segment constructor object
2467 static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode)
2469 struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
2473 nilfs_segctor_accept(sci);
2477 if (!nilfs_segctor_confirm(sci))
2478 err = nilfs_segctor_do_construct(sci, mode);
2483 if (test_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags) &&
2487 sbp = nilfs_prepare_super(sci->sc_super,
2491 err = nilfs_commit_super(sci->sc_super,
2498 nilfs_segctor_notify(sci, mode, err);
2504 struct nilfs_sc_info *sci = from_timer(sci, t, sc_timer);
2506 wake_up_process(sci->sc_task);
2528 struct nilfs_sc_info *sci = nilfs->ns_writer;
2532 if (unlikely(!sci))
2547 sci->sc_freesegs = kbufs[4];
2548 sci->sc_nfreesegs = argv[4].v_nmembs;
2549 list_splice_tail_init(&nilfs->ns_gc_inodes, &sci->sc_gc_inodes);
2552 err = nilfs_segctor_construct(sci, SC_LSEG_SR);
2553 nilfs_remove_written_gcinodes(nilfs, &sci->sc_gc_inodes);
2560 schedule_timeout(sci->sc_interval);
2563 int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs,
2564 sci->sc_nfreesegs);
2574 sci->sc_freesegs = NULL;
2575 sci->sc_nfreesegs = 0;
2581 static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode)
2585 nilfs_transaction_lock(sci->sc_super, &ti, 0);
2586 nilfs_segctor_construct(sci, mode);
2593 if (test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags))
2594 nilfs_segctor_start_timer(sci);
2596 nilfs_transaction_unlock(sci->sc_super);
2599 static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci)
2603 spin_lock(&sci->sc_state_lock);
2604 mode = (sci->sc_flush_request & FLUSH_DAT_BIT) ?
2606 spin_unlock(&sci->sc_state_lock);
2609 nilfs_segctor_do_construct(sci, mode);
2611 spin_lock(&sci->sc_state_lock);
2612 sci->sc_flush_request &= (mode == SC_FLUSH_FILE) ?
2614 spin_unlock(&sci->sc_state_lock);
2616 clear_bit(NILFS_SC_PRIOR_FLUSH, &sci->sc_flags);
2619 static int nilfs_segctor_flush_mode(struct nilfs_sc_info *sci)
2621 if (!test_bit(NILFS_SC_UNCLOSED, &sci->sc_flags) ||
2622 time_before(jiffies, sci->sc_lseg_stime + sci->sc_mjcp_freq)) {
2623 if (!(sci->sc_flush_request & ~FLUSH_FILE_BIT))
2625 else if (!(sci->sc_flush_request & ~FLUSH_DAT_BIT))
2633 * @sci: nilfs_sc_info struct
2639 static bool nilfs_log_write_required(struct nilfs_sc_info *sci, int *modep)
2643 spin_lock(&sci->sc_state_lock);
2644 timedout = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) &&
2645 time_after_eq(jiffies, sci->sc_timer.expires));
2646 if (timedout || sci->sc_seq_request != sci->sc_seq_done)
2648 else if (sci->sc_flush_request)
2649 *modep = nilfs_segctor_flush_mode(sci);
2653 spin_unlock(&sci->sc_state_lock);
2670 struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg;
2671 struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
2673 nilfs_info(sci->sc_super,
2675 sci->sc_interval / HZ, sci->sc_mjcp_freq / HZ);
2689 prepare_to_wait(&sci->sc_wait_daemon, &wait,
2691 should_write = nilfs_log_write_required(sci, &mode);
2694 finish_wait(&sci->sc_wait_daemon, &wait);
2700 nilfs_segctor_thread_construct(sci, mode);
2704 spin_lock(&sci->sc_state_lock);
2705 sci->sc_task = NULL;
2706 timer_shutdown_sync(&sci->sc_timer);
2707 spin_unlock(&sci->sc_state_lock);
2718 struct nilfs_sc_info *sci;
2720 sci = kzalloc(sizeof(*sci), GFP_KERNEL);
2721 if (!sci)
2724 sci->sc_super = sb;
2727 sci->sc_root = root;
2729 init_waitqueue_head(&sci->sc_wait_request);
2730 init_waitqueue_head(&sci->sc_wait_daemon);
2731 spin_lock_init(&sci->sc_state_lock);
2732 INIT_LIST_HEAD(&sci->sc_dirty_files);
2733 INIT_LIST_HEAD(&sci->sc_segbufs);
2734 INIT_LIST_HEAD(&sci->sc_write_logs);
2735 INIT_LIST_HEAD(&sci->sc_gc_inodes);
2736 INIT_LIST_HEAD(&sci->sc_iput_queue);
2737 INIT_WORK(&sci->sc_iput_work, nilfs_iput_work_func);
2739 sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT;
2740 sci->sc_mjcp_freq = HZ * NILFS_SC_DEFAULT_SR_FREQ;
2741 sci->sc_watermark = NILFS_SC_DEFAULT_WATERMARK;
2744 sci->sc_interval = HZ * nilfs->ns_interval;
2746 sci->sc_watermark = nilfs->ns_watermark;
2747 return sci;
2750 static void nilfs_segctor_write_out(struct nilfs_sc_info *sci)
2761 nilfs_transaction_lock(sci->sc_super, &ti, 0);
2762 ret = nilfs_segctor_construct(sci, SC_LSEG_SR);
2763 nilfs_transaction_unlock(sci->sc_super);
2765 flush_work(&sci->sc_iput_work);
2772 * @sci: nilfs_sc_info
2778 static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
2780 struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
2785 if (sci->sc_task) {
2786 wake_up(&sci->sc_wait_daemon);
2787 kthread_stop(sci->sc_task);
2790 spin_lock(&sci->sc_state_lock);
2791 flag = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) || sci->sc_flush_request
2792 || sci->sc_seq_request != sci->sc_seq_done);
2793 spin_unlock(&sci->sc_state_lock);
2800 nilfs_segctor_wakeup(sci, 0, true);
2802 if (flush_work(&sci->sc_iput_work))
2805 if (flag || !nilfs_segctor_confirm(sci))
2806 nilfs_segctor_write_out(sci);
2808 if (!list_empty(&sci->sc_dirty_files)) {
2809 nilfs_warn(sci->sc_super,
2811 nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1);
2814 if (!list_empty(&sci->sc_iput_queue)) {
2815 nilfs_warn(sci->sc_super,
2817 nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 1);
2820 WARN_ON(!list_empty(&sci->sc_segbufs));
2821 WARN_ON(!list_empty(&sci->sc_write_logs));
2823 nilfs_put_root(sci->sc_root);
2827 kfree(sci);
2846 struct nilfs_sc_info *sci;
2860 sci = nilfs_segctor_new(sb, root);
2861 if (unlikely(!sci))
2864 nilfs->ns_writer = sci;
2865 t = kthread_create(nilfs_segctor_thread, sci, "segctord");
2872 sci->sc_task = t;
2873 timer_setup(&sci->sc_timer, nilfs_construction_timeout, 0);
2875 wake_up_process(sci->sc_task);