11 static void logfs_calc_free(struct super_block *sb)  in logfs_calc_free()  argument
13 	struct logfs_super *super = logfs_super(sb);  in logfs_calc_free()
50 static void reserve_sb_and_journal(struct super_block *sb)  in reserve_sb_and_journal()  argument
52 	struct logfs_super *super = logfs_super(sb);  in reserve_sb_and_journal()
56 	err = btree_insert32(head, seg_no(sb, super->s_sb_ofs[0]), (void *)1,  in reserve_sb_and_journal()
60 	err = btree_insert32(head, seg_no(sb, super->s_sb_ofs[1]), (void *)1,  in reserve_sb_and_journal()
73 static void read_dynsb(struct super_block *sb,  in read_dynsb()  argument
76 	struct logfs_super *super = logfs_super(sb);  in read_dynsb()
87 static void read_anchor(struct super_block *sb,  in read_anchor()  argument
90 	struct logfs_super *super = logfs_super(sb);  in read_anchor()
105 static void read_erasecount(struct super_block *sb,  in read_erasecount()  argument
108 	struct logfs_super *super = logfs_super(sb);  in read_erasecount()
115 static int read_area(struct super_block *sb, struct logfs_je_area *a)  in read_area()  argument
117 	struct logfs_super *super = logfs_super(sb);  in read_area()
133 	ofs = dev_ofs(sb, area->a_segno, area->a_written_bytes);  in read_area()
159 static int __read_je_header(struct super_block *sb, u64 ofs,  in __read_je_header()  argument
162 	struct logfs_super *super = logfs_super(sb);  in __read_je_header()
163 	size_t bufsize = max_t(size_t, sb->s_blocksize, super->s_writesize)  in __read_je_header()
169 	err = wbuf_read(sb, ofs, sizeof(*jh), jh);  in __read_je_header()
175 	if (len > sb->s_blocksize)  in __read_je_header()
184 static int __read_je_payload(struct super_block *sb, u64 ofs,  in __read_je_payload()  argument
191 	err = wbuf_read(sb, ofs + sizeof(*jh), len, jh + 1);  in __read_je_payload()
211 static int __read_je(struct super_block *sb, u64 ofs,  in __read_je()  argument
216 	err = __read_je_header(sb, ofs, jh);  in __read_je()
219 	return __read_je_payload(sb, ofs, jh);  in __read_je()
222 static int read_je(struct super_block *sb, u64 ofs)  in read_je()  argument
224 	struct logfs_super *super = logfs_super(sb);  in read_je()
230 	err = __read_je(sb, ofs, jh);  in read_je()
238 		read_dynsb(sb, unpack(jh, scratch));  in read_je()
241 		read_anchor(sb, unpack(jh, scratch));  in read_je()
244 		read_erasecount(sb, unpack(jh, scratch));  in read_je()
247 		err = read_area(sb, unpack(jh, scratch));  in read_je()
250 		err = logfs_load_object_aliases(sb, unpack(jh, scratch),  in read_je()
260 static int logfs_read_segment(struct super_block *sb, u32 segno)  in logfs_read_segment()  argument
262 	struct logfs_super *super = logfs_super(sb);  in logfs_read_segment()
264 	u64 ofs, seg_ofs = dev_ofs(sb, segno, 0);  in logfs_read_segment()
272 		err = __read_je_header(sb, ofs, jh);  in logfs_read_segment()
277 		err = __read_je_payload(sb, ofs, jh);  in logfs_read_segment()
294 	err = __read_je(sb, ofs, jh);  in logfs_read_segment()
303 		err = read_je(sb, be64_to_cpu(super->s_je_array[i]));  in logfs_read_segment()
311 static u64 read_gec(struct super_block *sb, u32 segno)  in read_gec()  argument
319 	err = wbuf_read(sb, dev_ofs(sb, segno, 0), sizeof(sh), &sh);  in read_gec()
331 static int logfs_read_journal(struct super_block *sb)  in logfs_read_journal()  argument
333 	struct logfs_super *super = logfs_super(sb);  in logfs_read_journal()
342 		gec[i] = read_gec(sb, super->s_journal_seg[i]);  in logfs_read_journal()
351 	return logfs_read_segment(sb, super->s_journal_seg[max_i]);  in logfs_read_journal()
390 	struct super_block *sb = area->a_sb;  in journal_erase_segment()  local
398 	err = logfs_erase_segment(sb, area->a_segno, 1);  in journal_erase_segment()
408 	u.sh.gec = cpu_to_be64(logfs_super(sb)->s_gec);  in journal_erase_segment()
414 	ofs = dev_ofs(sb, area->a_segno, 0);  in journal_erase_segment()
450 static void *logfs_write_erasecount(struct super_block *sb, void *_ec,  in logfs_write_erasecount()  argument
453 	struct logfs_super *super = logfs_super(sb);  in logfs_write_erasecount()
468 	struct super_block *sb = (void *)_sb;  in account_shadow()  local
469 	struct logfs_super *super = logfs_super(sb);  in account_shadow()
481 	logfs_set_segment_used(sb, shadow->old_ofs, -shadow->old_len);  in account_shadow()
482 	logfs_set_segment_used(sb, shadow->new_ofs, shadow->new_len);  in account_shadow()
491 static void account_shadows(struct super_block *sb)  in account_shadows()  argument
493 	struct logfs_super *super = logfs_super(sb);  in account_shadows()
498 	btree_grim_visitor64(&tree->new, (unsigned long)sb, account_shadow);  in account_shadows()
499 	btree_grim_visitor64(&tree->old, (unsigned long)sb, account_shadow);  in account_shadows()
510 		li->li_block->ops->free_block(sb, li->li_block);  in account_shadows()
515 static void *__logfs_write_anchor(struct super_block *sb, void *_da,  in __logfs_write_anchor()  argument
518 	struct logfs_super *super = logfs_super(sb);  in __logfs_write_anchor()
535 static void *logfs_write_dynsb(struct super_block *sb, void *_dynsb,  in logfs_write_dynsb()  argument
538 	struct logfs_super *super = logfs_super(sb);  in logfs_write_dynsb()
553 static void write_wbuf(struct super_block *sb, struct logfs_area *area,  in write_wbuf()  argument
556 	struct logfs_super *super = logfs_super(sb);  in write_wbuf()
563 	ofs = dev_ofs(sb, area->a_segno,  in write_wbuf()
574 static void *logfs_write_area(struct super_block *sb, void *_a,  in logfs_write_area()  argument
577 	struct logfs_super *super = logfs_super(sb);  in logfs_write_area()
586 		write_wbuf(sb, area, a + 1);  in logfs_write_area()
593 static void *logfs_write_commit(struct super_block *sb, void *h,  in logfs_write_commit()  argument
596 	struct logfs_super *super = logfs_super(sb);  in logfs_write_commit()
603 static size_t __logfs_write_je(struct super_block *sb, void *buf, u16 type,  in __logfs_write_je()  argument
606 	struct logfs_super *super = logfs_super(sb);  in __logfs_write_je()
615 	compr_len = logfs_compress(buf, data, len, sb->s_blocksize);  in __logfs_write_je()
650 static int logfs_write_je_buf(struct super_block *sb, void *buf, u16 type,  in logfs_write_je_buf()  argument
653 	struct logfs_super *super = logfs_super(sb);  in logfs_write_je_buf()
660 	len = __logfs_write_je(sb, buf, type, buf_len);  in logfs_write_je_buf()
673 static int logfs_write_je(struct super_block *sb,  in logfs_write_je()  argument
674 		void* (*write)(struct super_block *sb, void *scratch,  in logfs_write_je()  argument
681 	buf = write(sb, logfs_super(sb)->s_je, &type, &len);  in logfs_write_je()
682 	return logfs_write_je_buf(sb, buf, type, len);  in logfs_write_je()
685 int write_alias_journal(struct super_block *sb, u64 ino, u64 bix,  in write_alias_journal()  argument
688 	struct logfs_super *super = logfs_super(sb);  in write_alias_journal()
700 	if (fill >= sb->s_blocksize / sizeof(*oa)) {  in write_alias_journal()
701 		err = logfs_write_je_buf(sb, oa, JE_OBJ_ALIAS, sb->s_blocksize);  in write_alias_journal()
709 static int logfs_write_obj_aliases(struct super_block *sb)  in logfs_write_obj_aliases()  argument
711 	struct logfs_super *super = logfs_super(sb);  in logfs_write_obj_aliases()
717 	err = logfs_write_obj_aliases_pagecache(sb);  in logfs_write_obj_aliases()
722 		err = logfs_write_je_buf(sb, super->s_je, JE_OBJ_ALIAS,  in logfs_write_obj_aliases()
734 void logfs_write_anchor(struct super_block *sb)  in logfs_write_anchor()  argument
736 	struct logfs_super *super = logfs_super(sb);  in logfs_write_anchor()
748 	logfs_sync_segments(sb);  in logfs_write_anchor()
749 	account_shadows(sb);  in logfs_write_anchor()
757 		err = logfs_write_je(sb, logfs_write_area);  in logfs_write_anchor()
761 	err = logfs_write_obj_aliases(sb);  in logfs_write_anchor()
764 	err = logfs_write_je(sb, logfs_write_erasecount);  in logfs_write_anchor()
767 	err = logfs_write_je(sb, __logfs_write_anchor);  in logfs_write_anchor()
770 	err = logfs_write_je(sb, logfs_write_dynsb);  in logfs_write_anchor()
791 	super->s_devops->sync(sb);  in logfs_write_anchor()
792 	err = logfs_write_je(sb, logfs_write_commit);  in logfs_write_anchor()
799 	super->s_devops->sync(sb);  in logfs_write_anchor()
805 void do_logfs_journal_wl_pass(struct super_block *sb)  in do_logfs_journal_wl_pass()  argument
807 	struct logfs_super *super = logfs_super(sb);  in do_logfs_journal_wl_pass()
818 			logfs_set_segment_unreserved(sb,  in do_logfs_journal_wl_pass()
826 		segno = get_best_cand(sb, &super->s_reserve_list, &ec);  in do_logfs_journal_wl_pass()
829 		logfs_set_segment_reserved(sb, segno);  in do_logfs_journal_wl_pass()
832 		err = logfs_erase_segment(sb, segno, 1);  in do_logfs_journal_wl_pass()
836 	freeseg(sb, area->a_segno);  in do_logfs_journal_wl_pass()
841 	logfs_write_anchor(sb);  in do_logfs_journal_wl_pass()
843 	err = logfs_write_sb(sb);  in do_logfs_journal_wl_pass()
853 int logfs_init_journal(struct super_block *sb)  in logfs_init_journal()  argument
855 	struct logfs_super *super = logfs_super(sb);  in logfs_init_journal()
856 	size_t bufsize = max_t(size_t, sb->s_blocksize, super->s_writesize)  in logfs_init_journal()
871 	super->s_master_inode = logfs_new_meta_inode(sb, LOGFS_INO_MASTER);  in logfs_init_journal()
875 	ret = logfs_read_journal(sb);  in logfs_init_journal()
879 	reserve_sb_and_journal(sb);  in logfs_init_journal()
880 	logfs_calc_free(sb);  in logfs_init_journal()
886 void logfs_cleanup_journal(struct super_block *sb)  in logfs_cleanup_journal()  argument
888 	struct logfs_super *super = logfs_super(sb);  in logfs_cleanup_journal()