Lines Matching refs:nilfs
29 void nilfs_set_last_segment(struct the_nilfs *nilfs, in nilfs_set_last_segment() argument
32 spin_lock(&nilfs->ns_last_segment_lock); in nilfs_set_last_segment()
33 nilfs->ns_last_pseg = start_blocknr; in nilfs_set_last_segment()
34 nilfs->ns_last_seq = seq; in nilfs_set_last_segment()
35 nilfs->ns_last_cno = cno; in nilfs_set_last_segment()
37 if (!nilfs_sb_dirty(nilfs)) { in nilfs_set_last_segment()
38 if (nilfs->ns_prev_seq == nilfs->ns_last_seq) in nilfs_set_last_segment()
41 set_nilfs_sb_dirty(nilfs); in nilfs_set_last_segment()
43 nilfs->ns_prev_seq = nilfs->ns_last_seq; in nilfs_set_last_segment()
46 spin_unlock(&nilfs->ns_last_segment_lock); in nilfs_set_last_segment()
58 struct the_nilfs *nilfs; in alloc_nilfs() local
60 nilfs = kzalloc(sizeof(*nilfs), GFP_KERNEL); in alloc_nilfs()
61 if (!nilfs) in alloc_nilfs()
64 nilfs->ns_sb = sb; in alloc_nilfs()
65 nilfs->ns_bdev = sb->s_bdev; in alloc_nilfs()
66 atomic_set(&nilfs->ns_ndirtyblks, 0); in alloc_nilfs()
67 init_rwsem(&nilfs->ns_sem); in alloc_nilfs()
68 mutex_init(&nilfs->ns_snapshot_mount_mutex); in alloc_nilfs()
69 INIT_LIST_HEAD(&nilfs->ns_dirty_files); in alloc_nilfs()
70 INIT_LIST_HEAD(&nilfs->ns_gc_inodes); in alloc_nilfs()
71 spin_lock_init(&nilfs->ns_inode_lock); in alloc_nilfs()
72 spin_lock_init(&nilfs->ns_next_gen_lock); in alloc_nilfs()
73 spin_lock_init(&nilfs->ns_last_segment_lock); in alloc_nilfs()
74 nilfs->ns_cptree = RB_ROOT; in alloc_nilfs()
75 spin_lock_init(&nilfs->ns_cptree_lock); in alloc_nilfs()
76 init_rwsem(&nilfs->ns_segctor_sem); in alloc_nilfs()
77 nilfs->ns_sb_update_freq = NILFS_SB_FREQ; in alloc_nilfs()
79 return nilfs; in alloc_nilfs()
86 void destroy_nilfs(struct the_nilfs *nilfs) in destroy_nilfs() argument
89 if (nilfs_init(nilfs)) { in destroy_nilfs()
90 brelse(nilfs->ns_sbh[0]); in destroy_nilfs()
91 brelse(nilfs->ns_sbh[1]); in destroy_nilfs()
93 kfree(nilfs); in destroy_nilfs()
96 static int nilfs_load_super_root(struct the_nilfs *nilfs, in nilfs_load_super_root() argument
101 struct nilfs_super_block **sbp = nilfs->ns_sbp; in nilfs_load_super_root()
107 err = nilfs_read_super_root_block(nilfs, sr_block, &bh_sr, 1); in nilfs_load_super_root()
111 down_read(&nilfs->ns_sem); in nilfs_load_super_root()
115 up_read(&nilfs->ns_sem); in nilfs_load_super_root()
117 inode_size = nilfs->ns_inode_size; in nilfs_load_super_root()
120 err = nilfs_dat_read(sb, dat_entry_size, rawi, &nilfs->ns_dat); in nilfs_load_super_root()
125 err = nilfs_cpfile_read(sb, checkpoint_size, rawi, &nilfs->ns_cpfile); in nilfs_load_super_root()
131 &nilfs->ns_sufile); in nilfs_load_super_root()
136 nilfs->ns_nongc_ctime = le64_to_cpu(raw_sr->sr_nongc_ctime); in nilfs_load_super_root()
143 iput(nilfs->ns_cpfile); in nilfs_load_super_root()
146 iput(nilfs->ns_dat); in nilfs_load_super_root()
171 static int nilfs_store_log_cursor(struct the_nilfs *nilfs, in nilfs_store_log_cursor() argument
176 nilfs->ns_last_pseg = le64_to_cpu(sbp->s_last_pseg); in nilfs_store_log_cursor()
177 nilfs->ns_last_cno = le64_to_cpu(sbp->s_last_cno); in nilfs_store_log_cursor()
178 nilfs->ns_last_seq = le64_to_cpu(sbp->s_last_seq); in nilfs_store_log_cursor()
180 nilfs->ns_prev_seq = nilfs->ns_last_seq; in nilfs_store_log_cursor()
181 nilfs->ns_seg_seq = nilfs->ns_last_seq; in nilfs_store_log_cursor()
182 nilfs->ns_segnum = in nilfs_store_log_cursor()
183 nilfs_get_segnum_of_block(nilfs, nilfs->ns_last_pseg); in nilfs_store_log_cursor()
184 nilfs->ns_cno = nilfs->ns_last_cno + 1; in nilfs_store_log_cursor()
185 if (nilfs->ns_segnum >= nilfs->ns_nsegments) { in nilfs_store_log_cursor()
186 nilfs_msg(nilfs->ns_sb, KERN_ERR, in nilfs_store_log_cursor()
188 (unsigned long long)nilfs->ns_segnum, in nilfs_store_log_cursor()
189 nilfs->ns_nsegments); in nilfs_store_log_cursor()
204 int load_nilfs(struct the_nilfs *nilfs, struct super_block *sb) in load_nilfs() argument
208 int really_read_only = bdev_read_only(nilfs->ns_bdev); in load_nilfs()
209 int valid_fs = nilfs_valid_fs(nilfs); in load_nilfs()
224 err = nilfs_search_super_root(nilfs, &ri); in load_nilfs()
226 struct nilfs_super_block **sbp = nilfs->ns_sbp; in load_nilfs()
244 memcpy(sbp[0], sbp[1], nilfs->ns_sbsize); in load_nilfs()
245 nilfs->ns_crc_seed = le32_to_cpu(sbp[0]->s_crc_seed); in load_nilfs()
246 nilfs->ns_sbwtime = le64_to_cpu(sbp[0]->s_wtime); in load_nilfs()
250 if (blocksize != nilfs->ns_blocksize) { in load_nilfs()
253 blocksize, nilfs->ns_blocksize); in load_nilfs()
257 err = nilfs_store_log_cursor(nilfs, sbp[0]); in load_nilfs()
262 nilfs->ns_mount_state &= ~NILFS_VALID_FS; in load_nilfs()
265 err = nilfs_search_super_root(nilfs, &ri); in load_nilfs()
270 err = nilfs_load_super_root(nilfs, sb, ri.ri_super_root); in load_nilfs()
287 if (nilfs_test_opt(nilfs, NORECOVERY)) { in load_nilfs()
292 features = le64_to_cpu(nilfs->ns_sbp[0]->s_feature_compat_ro) & in load_nilfs()
308 } else if (nilfs_test_opt(nilfs, NORECOVERY)) { in load_nilfs()
315 err = nilfs_salvage_orphan_logs(nilfs, sb, &ri); in load_nilfs()
319 down_write(&nilfs->ns_sem); in load_nilfs()
320 nilfs->ns_mount_state |= NILFS_VALID_FS; /* set "clean" flag */ in load_nilfs()
322 up_write(&nilfs->ns_sem); in load_nilfs()
342 nilfs_sysfs_delete_device_group(nilfs); in load_nilfs()
345 iput(nilfs->ns_cpfile); in load_nilfs()
346 iput(nilfs->ns_sufile); in load_nilfs()
347 iput(nilfs->ns_dat); in load_nilfs()
371 unsigned long nilfs_nrsvsegs(struct the_nilfs *nilfs, unsigned long nsegs) in nilfs_nrsvsegs() argument
374 DIV_ROUND_UP(nsegs * nilfs->ns_r_segments_percentage, in nilfs_nrsvsegs()
382 static u64 nilfs_max_segment_count(struct the_nilfs *nilfs) in nilfs_max_segment_count() argument
386 do_div(max_count, nilfs->ns_blocks_per_segment); in nilfs_max_segment_count()
390 void nilfs_set_nsegments(struct the_nilfs *nilfs, unsigned long nsegs) in nilfs_set_nsegments() argument
392 nilfs->ns_nsegments = nsegs; in nilfs_set_nsegments()
393 nilfs->ns_nrsvsegs = nilfs_nrsvsegs(nilfs, nsegs); in nilfs_set_nsegments()
396 static int nilfs_store_disk_layout(struct the_nilfs *nilfs, in nilfs_store_disk_layout() argument
402 nilfs_msg(nilfs->ns_sb, KERN_ERR, in nilfs_store_disk_layout()
409 nilfs->ns_sbsize = le16_to_cpu(sbp->s_bytes); in nilfs_store_disk_layout()
410 if (nilfs->ns_sbsize > BLOCK_SIZE) in nilfs_store_disk_layout()
413 nilfs->ns_inode_size = le16_to_cpu(sbp->s_inode_size); in nilfs_store_disk_layout()
414 if (nilfs->ns_inode_size > nilfs->ns_blocksize) { in nilfs_store_disk_layout()
415 nilfs_msg(nilfs->ns_sb, KERN_ERR, in nilfs_store_disk_layout()
417 nilfs->ns_inode_size); in nilfs_store_disk_layout()
419 } else if (nilfs->ns_inode_size < NILFS_MIN_INODE_SIZE) { in nilfs_store_disk_layout()
420 nilfs_msg(nilfs->ns_sb, KERN_ERR, in nilfs_store_disk_layout()
422 nilfs->ns_inode_size); in nilfs_store_disk_layout()
426 nilfs->ns_first_ino = le32_to_cpu(sbp->s_first_ino); in nilfs_store_disk_layout()
428 nilfs->ns_blocks_per_segment = le32_to_cpu(sbp->s_blocks_per_segment); in nilfs_store_disk_layout()
429 if (nilfs->ns_blocks_per_segment < NILFS_SEG_MIN_BLOCKS) { in nilfs_store_disk_layout()
430 nilfs_msg(nilfs->ns_sb, KERN_ERR, in nilfs_store_disk_layout()
432 nilfs->ns_blocks_per_segment); in nilfs_store_disk_layout()
436 nilfs->ns_first_data_block = le64_to_cpu(sbp->s_first_data_block); in nilfs_store_disk_layout()
437 nilfs->ns_r_segments_percentage = in nilfs_store_disk_layout()
439 if (nilfs->ns_r_segments_percentage < 1 || in nilfs_store_disk_layout()
440 nilfs->ns_r_segments_percentage > 99) { in nilfs_store_disk_layout()
441 nilfs_msg(nilfs->ns_sb, KERN_ERR, in nilfs_store_disk_layout()
443 nilfs->ns_r_segments_percentage); in nilfs_store_disk_layout()
448 if (nsegments > nilfs_max_segment_count(nilfs)) { in nilfs_store_disk_layout()
449 nilfs_msg(nilfs->ns_sb, KERN_ERR, in nilfs_store_disk_layout()
452 (unsigned long long)nilfs_max_segment_count(nilfs)); in nilfs_store_disk_layout()
456 nblocks = (u64)i_size_read(nilfs->ns_sb->s_bdev->bd_inode) >> in nilfs_store_disk_layout()
457 nilfs->ns_sb->s_blocksize_bits; in nilfs_store_disk_layout()
459 u64 min_block_count = nsegments * nilfs->ns_blocks_per_segment; in nilfs_store_disk_layout()
467 nilfs_msg(nilfs->ns_sb, KERN_ERR, in nilfs_store_disk_layout()
475 nilfs_set_nsegments(nilfs, nsegments); in nilfs_store_disk_layout()
476 nilfs->ns_crc_seed = le32_to_cpu(sbp->s_crc_seed); in nilfs_store_disk_layout()
529 static void nilfs_release_super_block(struct the_nilfs *nilfs) in nilfs_release_super_block() argument
534 if (nilfs->ns_sbp[i]) { in nilfs_release_super_block()
535 brelse(nilfs->ns_sbh[i]); in nilfs_release_super_block()
536 nilfs->ns_sbh[i] = NULL; in nilfs_release_super_block()
537 nilfs->ns_sbp[i] = NULL; in nilfs_release_super_block()
542 void nilfs_fall_back_super_block(struct the_nilfs *nilfs) in nilfs_fall_back_super_block() argument
544 brelse(nilfs->ns_sbh[0]); in nilfs_fall_back_super_block()
545 nilfs->ns_sbh[0] = nilfs->ns_sbh[1]; in nilfs_fall_back_super_block()
546 nilfs->ns_sbp[0] = nilfs->ns_sbp[1]; in nilfs_fall_back_super_block()
547 nilfs->ns_sbh[1] = NULL; in nilfs_fall_back_super_block()
548 nilfs->ns_sbp[1] = NULL; in nilfs_fall_back_super_block()
551 void nilfs_swap_super_block(struct the_nilfs *nilfs) in nilfs_swap_super_block() argument
553 struct buffer_head *tsbh = nilfs->ns_sbh[0]; in nilfs_swap_super_block()
554 struct nilfs_super_block *tsbp = nilfs->ns_sbp[0]; in nilfs_swap_super_block()
556 nilfs->ns_sbh[0] = nilfs->ns_sbh[1]; in nilfs_swap_super_block()
557 nilfs->ns_sbp[0] = nilfs->ns_sbp[1]; in nilfs_swap_super_block()
558 nilfs->ns_sbh[1] = tsbh; in nilfs_swap_super_block()
559 nilfs->ns_sbp[1] = tsbp; in nilfs_swap_super_block()
562 static int nilfs_load_super_block(struct the_nilfs *nilfs, in nilfs_load_super_block() argument
566 struct nilfs_super_block **sbp = nilfs->ns_sbp; in nilfs_load_super_block()
567 struct buffer_head **sbh = nilfs->ns_sbh; in nilfs_load_super_block()
568 u64 sb2off, devsize = nilfs->ns_bdev->bd_inode->i_size; in nilfs_load_super_block()
613 nilfs_release_super_block(nilfs); in nilfs_load_super_block()
623 nilfs_swap_super_block(nilfs); in nilfs_load_super_block()
625 nilfs->ns_sbwcount = 0; in nilfs_load_super_block()
626 nilfs->ns_sbwtime = le64_to_cpu(sbp[0]->s_wtime); in nilfs_load_super_block()
627 nilfs->ns_prot_seq = le64_to_cpu(sbp[valid[1] & !swp]->s_last_seq); in nilfs_load_super_block()
645 int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data) in init_nilfs() argument
651 down_write(&nilfs->ns_sem); in init_nilfs()
659 err = nilfs_load_super_block(nilfs, sb, blocksize, &sbp); in init_nilfs()
690 nilfs_release_super_block(nilfs); in init_nilfs()
693 err = nilfs_load_super_block(nilfs, sb, blocksize, &sbp); in init_nilfs()
701 nilfs->ns_blocksize_bits = sb->s_blocksize_bits; in init_nilfs()
702 nilfs->ns_blocksize = blocksize; in init_nilfs()
704 get_random_bytes(&nilfs->ns_next_generation, in init_nilfs()
705 sizeof(nilfs->ns_next_generation)); in init_nilfs()
707 err = nilfs_store_disk_layout(nilfs, sbp); in init_nilfs()
713 nilfs->ns_mount_state = le16_to_cpu(sbp->s_state); in init_nilfs()
715 err = nilfs_store_log_cursor(nilfs, sbp); in init_nilfs()
719 set_nilfs_init(nilfs); in init_nilfs()
722 up_write(&nilfs->ns_sem); in init_nilfs()
726 nilfs_release_super_block(nilfs); in init_nilfs()
730 int nilfs_discard_segments(struct the_nilfs *nilfs, __u64 *segnump, in nilfs_discard_segments() argument
739 sects_per_block = (1 << nilfs->ns_blocksize_bits) / in nilfs_discard_segments()
740 bdev_logical_block_size(nilfs->ns_bdev); in nilfs_discard_segments()
742 nilfs_get_segment_range(nilfs, *sn, &seg_start, &seg_end); in nilfs_discard_segments()
750 ret = blkdev_issue_discard(nilfs->ns_bdev, in nilfs_discard_segments()
760 ret = blkdev_issue_discard(nilfs->ns_bdev, in nilfs_discard_segments()
767 int nilfs_count_free_blocks(struct the_nilfs *nilfs, sector_t *nblocks) in nilfs_count_free_blocks() argument
771 ncleansegs = nilfs_sufile_get_ncleansegs(nilfs->ns_sufile); in nilfs_count_free_blocks()
772 *nblocks = (sector_t)ncleansegs * nilfs->ns_blocks_per_segment; in nilfs_count_free_blocks()
776 int nilfs_near_disk_full(struct the_nilfs *nilfs) in nilfs_near_disk_full() argument
780 ncleansegs = nilfs_sufile_get_ncleansegs(nilfs->ns_sufile); in nilfs_near_disk_full()
781 nincsegs = atomic_read(&nilfs->ns_ndirtyblks) / in nilfs_near_disk_full()
782 nilfs->ns_blocks_per_segment + 1; in nilfs_near_disk_full()
784 return ncleansegs <= nilfs->ns_nrsvsegs + nincsegs; in nilfs_near_disk_full()
787 struct nilfs_root *nilfs_lookup_root(struct the_nilfs *nilfs, __u64 cno) in nilfs_lookup_root() argument
792 spin_lock(&nilfs->ns_cptree_lock); in nilfs_lookup_root()
793 n = nilfs->ns_cptree.rb_node; in nilfs_lookup_root()
803 spin_unlock(&nilfs->ns_cptree_lock); in nilfs_lookup_root()
807 spin_unlock(&nilfs->ns_cptree_lock); in nilfs_lookup_root()
813 nilfs_find_or_create_root(struct the_nilfs *nilfs, __u64 cno) in nilfs_find_or_create_root() argument
819 root = nilfs_lookup_root(nilfs, cno); in nilfs_find_or_create_root()
827 spin_lock(&nilfs->ns_cptree_lock); in nilfs_find_or_create_root()
829 p = &nilfs->ns_cptree.rb_node; in nilfs_find_or_create_root()
842 spin_unlock(&nilfs->ns_cptree_lock); in nilfs_find_or_create_root()
850 new->nilfs = nilfs; in nilfs_find_or_create_root()
856 rb_insert_color(&new->rb_node, &nilfs->ns_cptree); in nilfs_find_or_create_root()
858 spin_unlock(&nilfs->ns_cptree_lock); in nilfs_find_or_create_root()
871 struct the_nilfs *nilfs = root->nilfs; in nilfs_put_root() local
873 if (refcount_dec_and_lock(&root->count, &nilfs->ns_cptree_lock)) { in nilfs_put_root()
874 rb_erase(&root->rb_node, &nilfs->ns_cptree); in nilfs_put_root()
875 spin_unlock(&nilfs->ns_cptree_lock); in nilfs_put_root()