20 nilfs_cpfile_checkpoints_per_block(const struct inode *cpfile)  in nilfs_cpfile_checkpoints_per_block()  argument
22 	return NILFS_MDT(cpfile)->mi_entries_per_block;  in nilfs_cpfile_checkpoints_per_block()
27 nilfs_cpfile_get_blkoff(const struct inode *cpfile, __u64 cno)  in nilfs_cpfile_get_blkoff()  argument
29 	__u64 tcno = cno + NILFS_MDT(cpfile)->mi_first_entry_offset - 1;  in nilfs_cpfile_get_blkoff()
31 	do_div(tcno, nilfs_cpfile_checkpoints_per_block(cpfile));  in nilfs_cpfile_get_blkoff()
37 nilfs_cpfile_get_offset(const struct inode *cpfile, __u64 cno)  in nilfs_cpfile_get_offset()  argument
39 	__u64 tcno = cno + NILFS_MDT(cpfile)->mi_first_entry_offset - 1;  in nilfs_cpfile_get_offset()
41 	return do_div(tcno, nilfs_cpfile_checkpoints_per_block(cpfile));  in nilfs_cpfile_get_offset()
44 static __u64 nilfs_cpfile_first_checkpoint_in_block(const struct inode *cpfile,  in nilfs_cpfile_first_checkpoint_in_block()  argument
47 	return (__u64)nilfs_cpfile_checkpoints_per_block(cpfile) * blkoff  in nilfs_cpfile_first_checkpoint_in_block()
48 		+ 1 - NILFS_MDT(cpfile)->mi_first_entry_offset;  in nilfs_cpfile_first_checkpoint_in_block()
52 nilfs_cpfile_checkpoints_in_block(const struct inode *cpfile,  in nilfs_cpfile_checkpoints_in_block()  argument
57 		     nilfs_cpfile_checkpoints_per_block(cpfile) -  in nilfs_cpfile_checkpoints_in_block()
58 		     nilfs_cpfile_get_offset(cpfile, curr),  in nilfs_cpfile_checkpoints_in_block()
62 static inline int nilfs_cpfile_is_in_first(const struct inode *cpfile,  in nilfs_cpfile_is_in_first()  argument
65 	return nilfs_cpfile_get_blkoff(cpfile, cno) == 0;  in nilfs_cpfile_is_in_first()
69 nilfs_cpfile_block_add_valid_checkpoints(const struct inode *cpfile,  in nilfs_cpfile_block_add_valid_checkpoints()  argument
83 nilfs_cpfile_block_sub_valid_checkpoints(const struct inode *cpfile,  in nilfs_cpfile_block_sub_valid_checkpoints()  argument
98 nilfs_cpfile_block_get_header(const struct inode *cpfile,  in nilfs_cpfile_block_get_header()  argument
106 nilfs_cpfile_block_get_checkpoint(const struct inode *cpfile, __u64 cno,  in nilfs_cpfile_block_get_checkpoint()  argument
110 	return kaddr + bh_offset(bh) + nilfs_cpfile_get_offset(cpfile, cno) *  in nilfs_cpfile_block_get_checkpoint()
111 		NILFS_MDT(cpfile)->mi_entry_size;  in nilfs_cpfile_block_get_checkpoint()
114 static void nilfs_cpfile_block_init(struct inode *cpfile,  in nilfs_cpfile_block_init()  argument
119 	size_t cpsz = NILFS_MDT(cpfile)->mi_entry_size;  in nilfs_cpfile_block_init()
120 	int n = nilfs_cpfile_checkpoints_per_block(cpfile);  in nilfs_cpfile_block_init()
128 static inline int nilfs_cpfile_get_header_block(struct inode *cpfile,  in nilfs_cpfile_get_header_block()  argument
131 	return nilfs_mdt_get_block(cpfile, 0, 0, NULL, bhp);  in nilfs_cpfile_get_header_block()
134 static inline int nilfs_cpfile_get_checkpoint_block(struct inode *cpfile,  in nilfs_cpfile_get_checkpoint_block()  argument
139 	return nilfs_mdt_get_block(cpfile,  in nilfs_cpfile_get_checkpoint_block()
140 				   nilfs_cpfile_get_blkoff(cpfile, cno),  in nilfs_cpfile_get_checkpoint_block()
161 static int nilfs_cpfile_find_checkpoint_block(struct inode *cpfile,  in nilfs_cpfile_find_checkpoint_block()  argument
172 	start = nilfs_cpfile_get_blkoff(cpfile, start_cno);  in nilfs_cpfile_find_checkpoint_block()
173 	end = nilfs_cpfile_get_blkoff(cpfile, end_cno);  in nilfs_cpfile_find_checkpoint_block()
175 	ret = nilfs_mdt_find_block(cpfile, start, end, &blkoff, bhp);  in nilfs_cpfile_find_checkpoint_block()
178 			nilfs_cpfile_first_checkpoint_in_block(cpfile, blkoff);  in nilfs_cpfile_find_checkpoint_block()
182 static inline int nilfs_cpfile_delete_checkpoint_block(struct inode *cpfile,  in nilfs_cpfile_delete_checkpoint_block()  argument
185 	return nilfs_mdt_delete_block(cpfile,  in nilfs_cpfile_delete_checkpoint_block()
186 				      nilfs_cpfile_get_blkoff(cpfile, cno));  in nilfs_cpfile_delete_checkpoint_block()
214 int nilfs_cpfile_get_checkpoint(struct inode *cpfile,  in nilfs_cpfile_get_checkpoint()  argument
226 	if (unlikely(cno < 1 || cno > nilfs_mdt_cno(cpfile) ||  in nilfs_cpfile_get_checkpoint()
227 		     (cno < nilfs_mdt_cno(cpfile) && create)))  in nilfs_cpfile_get_checkpoint()
230 	down_write(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_get_checkpoint()
232 	ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);  in nilfs_cpfile_get_checkpoint()
235 	ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, create, &cp_bh);  in nilfs_cpfile_get_checkpoint()
239 	cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);  in nilfs_cpfile_get_checkpoint()
249 		if (!nilfs_cpfile_is_in_first(cpfile, cno))  in nilfs_cpfile_get_checkpoint()
250 			nilfs_cpfile_block_add_valid_checkpoints(cpfile, cp_bh,  in nilfs_cpfile_get_checkpoint()
255 		header = nilfs_cpfile_block_get_header(cpfile, header_bh,  in nilfs_cpfile_get_checkpoint()
260 		nilfs_mdt_mark_dirty(cpfile);  in nilfs_cpfile_get_checkpoint()
271 	up_write(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_get_checkpoint()
285 void nilfs_cpfile_put_checkpoint(struct inode *cpfile, __u64 cno,  in nilfs_cpfile_put_checkpoint()  argument
311 int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,  in nilfs_cpfile_delete_checkpoints()  argument
318 	size_t cpsz = NILFS_MDT(cpfile)->mi_entry_size;  in nilfs_cpfile_delete_checkpoints()
325 		nilfs_msg(cpfile->i_sb, KERN_ERR,  in nilfs_cpfile_delete_checkpoints()
331 	down_write(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_delete_checkpoints()
333 	ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);  in nilfs_cpfile_delete_checkpoints()
340 		ncps = nilfs_cpfile_checkpoints_in_block(cpfile, cno, end);  in nilfs_cpfile_delete_checkpoints()
341 		ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh);  in nilfs_cpfile_delete_checkpoints()
352 			cpfile, cno, cp_bh, kaddr);  in nilfs_cpfile_delete_checkpoints()
365 			nilfs_mdt_mark_dirty(cpfile);  in nilfs_cpfile_delete_checkpoints()
366 			if (!nilfs_cpfile_is_in_first(cpfile, cno)) {  in nilfs_cpfile_delete_checkpoints()
369 						cpfile, cp_bh, kaddr, nicps);  in nilfs_cpfile_delete_checkpoints()
376 								   cpfile, cno);  in nilfs_cpfile_delete_checkpoints()
379 					nilfs_msg(cpfile->i_sb, KERN_ERR,  in nilfs_cpfile_delete_checkpoints()
393 		header = nilfs_cpfile_block_get_header(cpfile, header_bh,  in nilfs_cpfile_delete_checkpoints()
397 		nilfs_mdt_mark_dirty(cpfile);  in nilfs_cpfile_delete_checkpoints()
406 	up_write(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_delete_checkpoints()
410 static void nilfs_cpfile_checkpoint_to_cpinfo(struct inode *cpfile,  in nilfs_cpfile_checkpoint_to_cpinfo()  argument
423 static ssize_t nilfs_cpfile_do_get_cpinfo(struct inode *cpfile, __u64 *cnop,  in nilfs_cpfile_do_get_cpinfo()  argument
430 	size_t cpsz = NILFS_MDT(cpfile)->mi_entry_size;  in nilfs_cpfile_do_get_cpinfo()
431 	__u64 cur_cno = nilfs_mdt_cno(cpfile), cno = *cnop;  in nilfs_cpfile_do_get_cpinfo()
438 	down_read(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_do_get_cpinfo()
442 			cpfile, cno, cur_cno - 1, &cno, &bh);  in nilfs_cpfile_do_get_cpinfo()
448 		ncps = nilfs_cpfile_checkpoints_in_block(cpfile, cno, cur_cno);  in nilfs_cpfile_do_get_cpinfo()
451 		cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);  in nilfs_cpfile_do_get_cpinfo()
454 				nilfs_cpfile_checkpoint_to_cpinfo(cpfile, cp,  in nilfs_cpfile_do_get_cpinfo()
471 	up_read(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_do_get_cpinfo()
475 static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop,  in nilfs_cpfile_do_get_ssinfo()  argument
488 	down_read(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_do_get_ssinfo()
491 		ret = nilfs_cpfile_get_header_block(cpfile, &bh);  in nilfs_cpfile_do_get_ssinfo()
495 		header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr);  in nilfs_cpfile_do_get_ssinfo()
508 	curr_blkoff = nilfs_cpfile_get_blkoff(cpfile, curr);  in nilfs_cpfile_do_get_ssinfo()
509 	ret = nilfs_cpfile_get_checkpoint_block(cpfile, curr, 0, &bh);  in nilfs_cpfile_do_get_ssinfo()
517 		cp = nilfs_cpfile_block_get_checkpoint(cpfile, curr, bh, kaddr);  in nilfs_cpfile_do_get_ssinfo()
522 		nilfs_cpfile_checkpoint_to_cpinfo(cpfile, cp, ci);  in nilfs_cpfile_do_get_ssinfo()
529 		next_blkoff = nilfs_cpfile_get_blkoff(cpfile, next);  in nilfs_cpfile_do_get_ssinfo()
533 			ret = nilfs_cpfile_get_checkpoint_block(cpfile, next,  in nilfs_cpfile_do_get_ssinfo()
550 	up_read(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_do_get_ssinfo()
562 ssize_t nilfs_cpfile_get_cpinfo(struct inode *cpfile, __u64 *cnop, int mode,  in nilfs_cpfile_get_cpinfo()  argument
567 		return nilfs_cpfile_do_get_cpinfo(cpfile, cnop, buf, cisz, nci);  in nilfs_cpfile_get_cpinfo()
569 		return nilfs_cpfile_do_get_ssinfo(cpfile, cnop, buf, cisz, nci);  in nilfs_cpfile_get_cpinfo()
580 int nilfs_cpfile_delete_checkpoint(struct inode *cpfile, __u64 cno)  in nilfs_cpfile_delete_checkpoint()  argument
586 	nci = nilfs_cpfile_do_get_cpinfo(cpfile, &tcno, &ci, sizeof(ci), 1);  in nilfs_cpfile_delete_checkpoint()
594 	return nilfs_cpfile_delete_checkpoints(cpfile, cno, cno + 1);  in nilfs_cpfile_delete_checkpoint()
598 nilfs_cpfile_block_get_snapshot_list(const struct inode *cpfile,  in nilfs_cpfile_block_get_snapshot_list()  argument
608 		cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);  in nilfs_cpfile_block_get_snapshot_list()
611 		header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr);  in nilfs_cpfile_block_get_snapshot_list()
617 static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)  in nilfs_cpfile_set_snapshot()  argument
630 	down_write(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_set_snapshot()
632 	ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh);  in nilfs_cpfile_set_snapshot()
636 	cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);  in nilfs_cpfile_set_snapshot()
649 	ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);  in nilfs_cpfile_set_snapshot()
653 	header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);  in nilfs_cpfile_set_snapshot()
661 		prev_blkoff = nilfs_cpfile_get_blkoff(cpfile, prev);  in nilfs_cpfile_set_snapshot()
666 			ret = nilfs_cpfile_get_checkpoint_block(cpfile, curr,  in nilfs_cpfile_set_snapshot()
674 			cpfile, curr, curr_bh, kaddr);  in nilfs_cpfile_set_snapshot()
681 		ret = nilfs_cpfile_get_checkpoint_block(cpfile, prev, 0,  in nilfs_cpfile_set_snapshot()
692 		cpfile, curr, curr_bh, kaddr);  in nilfs_cpfile_set_snapshot()
697 	cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);  in nilfs_cpfile_set_snapshot()
705 		cpfile, prev, prev_bh, kaddr);  in nilfs_cpfile_set_snapshot()
710 	header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);  in nilfs_cpfile_set_snapshot()
718 	nilfs_mdt_mark_dirty(cpfile);  in nilfs_cpfile_set_snapshot()
732 	up_write(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_set_snapshot()
736 static int nilfs_cpfile_clear_snapshot(struct inode *cpfile, __u64 cno)  in nilfs_cpfile_clear_snapshot()  argument
748 	down_write(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_clear_snapshot()
750 	ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh);  in nilfs_cpfile_clear_snapshot()
754 	cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);  in nilfs_cpfile_clear_snapshot()
771 	ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);  in nilfs_cpfile_clear_snapshot()
775 		ret = nilfs_cpfile_get_checkpoint_block(cpfile, next, 0,  in nilfs_cpfile_clear_snapshot()
784 		ret = nilfs_cpfile_get_checkpoint_block(cpfile, prev, 0,  in nilfs_cpfile_clear_snapshot()
795 		cpfile, next, next_bh, kaddr);  in nilfs_cpfile_clear_snapshot()
801 		cpfile, prev, prev_bh, kaddr);  in nilfs_cpfile_clear_snapshot()
806 	cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);  in nilfs_cpfile_clear_snapshot()
813 	header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);  in nilfs_cpfile_clear_snapshot()
821 	nilfs_mdt_mark_dirty(cpfile);  in nilfs_cpfile_clear_snapshot()
835 	up_write(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_clear_snapshot()
856 int nilfs_cpfile_is_snapshot(struct inode *cpfile, __u64 cno)  in nilfs_cpfile_is_snapshot()  argument
867 	if (cno == 0 || cno >= nilfs_mdt_cno(cpfile))  in nilfs_cpfile_is_snapshot()
869 	down_read(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_is_snapshot()
871 	ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &bh);  in nilfs_cpfile_is_snapshot()
875 	cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);  in nilfs_cpfile_is_snapshot()
884 	up_read(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_is_snapshot()
906 int nilfs_cpfile_change_cpmode(struct inode *cpfile, __u64 cno, int mode)  in nilfs_cpfile_change_cpmode()  argument
912 		if (nilfs_checkpoint_is_mounted(cpfile->i_sb, cno))  in nilfs_cpfile_change_cpmode()
921 			ret = nilfs_cpfile_clear_snapshot(cpfile, cno);  in nilfs_cpfile_change_cpmode()
924 		return nilfs_cpfile_set_snapshot(cpfile, cno);  in nilfs_cpfile_change_cpmode()
945 int nilfs_cpfile_get_stat(struct inode *cpfile, struct nilfs_cpstat *cpstat)  in nilfs_cpfile_get_stat()  argument
952 	down_read(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_get_stat()
954 	ret = nilfs_cpfile_get_header_block(cpfile, &bh);  in nilfs_cpfile_get_stat()
958 	header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr);  in nilfs_cpfile_get_stat()
959 	cpstat->cs_cno = nilfs_mdt_cno(cpfile);  in nilfs_cpfile_get_stat()
966 	up_read(&NILFS_MDT(cpfile)->mi_sem);  in nilfs_cpfile_get_stat()
980 	struct inode *cpfile;  in nilfs_cpfile_read()  local
993 	cpfile = nilfs_iget_locked(sb, NULL, NILFS_CPFILE_INO);  in nilfs_cpfile_read()
994 	if (unlikely(!cpfile))  in nilfs_cpfile_read()
996 	if (!(cpfile->i_state & I_NEW))  in nilfs_cpfile_read()
999 	err = nilfs_mdt_init(cpfile, NILFS_MDT_GFP, 0);  in nilfs_cpfile_read()
1003 	nilfs_mdt_set_entry_size(cpfile, cpsize,  in nilfs_cpfile_read()
1006 	err = nilfs_read_inode_common(cpfile, raw_inode);  in nilfs_cpfile_read()
1010 	unlock_new_inode(cpfile);  in nilfs_cpfile_read()
1012 	*inodep = cpfile;  in nilfs_cpfile_read()
1015 	iget_failed(cpfile);  in nilfs_cpfile_read()