Lines Matching refs:cpfile
16 #include "cpfile.h"
20 nilfs_cpfile_checkpoints_per_block(const struct inode *cpfile)
22 return NILFS_MDT(cpfile)->mi_entries_per_block;
27 nilfs_cpfile_get_blkoff(const struct inode *cpfile, __u64 cno)
29 __u64 tcno = cno + NILFS_MDT(cpfile)->mi_first_entry_offset - 1;
31 do_div(tcno, nilfs_cpfile_checkpoints_per_block(cpfile));
37 nilfs_cpfile_get_offset(const struct inode *cpfile, __u64 cno)
39 __u64 tcno = cno + NILFS_MDT(cpfile)->mi_first_entry_offset - 1;
41 return do_div(tcno, nilfs_cpfile_checkpoints_per_block(cpfile));
44 static __u64 nilfs_cpfile_first_checkpoint_in_block(const struct inode *cpfile,
47 return (__u64)nilfs_cpfile_checkpoints_per_block(cpfile) * blkoff
48 + 1 - NILFS_MDT(cpfile)->mi_first_entry_offset;
52 nilfs_cpfile_checkpoints_in_block(const struct inode *cpfile,
57 nilfs_cpfile_checkpoints_per_block(cpfile) -
58 nilfs_cpfile_get_offset(cpfile, curr),
62 static inline int nilfs_cpfile_is_in_first(const struct inode *cpfile,
65 return nilfs_cpfile_get_blkoff(cpfile, cno) == 0;
69 nilfs_cpfile_block_add_valid_checkpoints(const struct inode *cpfile,
83 nilfs_cpfile_block_sub_valid_checkpoints(const struct inode *cpfile,
98 nilfs_cpfile_block_get_header(const struct inode *cpfile,
106 nilfs_cpfile_block_get_checkpoint(const struct inode *cpfile, __u64 cno,
110 return kaddr + bh_offset(bh) + nilfs_cpfile_get_offset(cpfile, cno) *
111 NILFS_MDT(cpfile)->mi_entry_size;
114 static void nilfs_cpfile_block_init(struct inode *cpfile,
119 size_t cpsz = NILFS_MDT(cpfile)->mi_entry_size;
120 int n = nilfs_cpfile_checkpoints_per_block(cpfile);
128 static inline int nilfs_cpfile_get_header_block(struct inode *cpfile,
131 return nilfs_mdt_get_block(cpfile, 0, 0, NULL, bhp);
134 static inline int nilfs_cpfile_get_checkpoint_block(struct inode *cpfile,
139 return nilfs_mdt_get_block(cpfile,
140 nilfs_cpfile_get_blkoff(cpfile, cno),
145 * nilfs_cpfile_find_checkpoint_block - find and get a buffer on cpfile
146 * @cpfile: inode of cpfile
161 static int nilfs_cpfile_find_checkpoint_block(struct inode *cpfile,
172 start = nilfs_cpfile_get_blkoff(cpfile, start_cno);
173 end = nilfs_cpfile_get_blkoff(cpfile, end_cno);
175 ret = nilfs_mdt_find_block(cpfile, start, end, &blkoff, bhp);
178 nilfs_cpfile_first_checkpoint_in_block(cpfile, blkoff);
182 static inline int nilfs_cpfile_delete_checkpoint_block(struct inode *cpfile,
185 return nilfs_mdt_delete_block(cpfile,
186 nilfs_cpfile_get_blkoff(cpfile, cno));
191 * @cpfile: inode of checkpoint file
214 int nilfs_cpfile_get_checkpoint(struct inode *cpfile,
226 if (unlikely(cno < 1 || cno > nilfs_mdt_cno(cpfile) ||
227 (cno < nilfs_mdt_cno(cpfile) && create)))
230 down_write(&NILFS_MDT(cpfile)->mi_sem);
232 ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);
235 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, create, &cp_bh);
239 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
249 if (!nilfs_cpfile_is_in_first(cpfile, cno))
250 nilfs_cpfile_block_add_valid_checkpoints(cpfile, cp_bh,
255 header = nilfs_cpfile_block_get_header(cpfile, header_bh,
260 nilfs_mdt_mark_dirty(cpfile);
271 up_write(&NILFS_MDT(cpfile)->mi_sem);
277 * @cpfile: inode of checkpoint file
285 void nilfs_cpfile_put_checkpoint(struct inode *cpfile, __u64 cno,
294 * @cpfile: inode of checkpoint file
311 int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
318 size_t cpsz = NILFS_MDT(cpfile)->mi_entry_size;
325 nilfs_err(cpfile->i_sb,
331 down_write(&NILFS_MDT(cpfile)->mi_sem);
333 ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);
340 ncps = nilfs_cpfile_checkpoints_in_block(cpfile, cno, end);
341 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh);
352 cpfile, cno, cp_bh, kaddr);
365 nilfs_mdt_mark_dirty(cpfile);
366 if (!nilfs_cpfile_is_in_first(cpfile, cno)) {
369 cpfile, cp_bh, kaddr, nicps);
376 cpfile, cno);
379 nilfs_err(cpfile->i_sb,
393 header = nilfs_cpfile_block_get_header(cpfile, header_bh,
397 nilfs_mdt_mark_dirty(cpfile);
406 up_write(&NILFS_MDT(cpfile)->mi_sem);
410 static void nilfs_cpfile_checkpoint_to_cpinfo(struct inode *cpfile,
423 static ssize_t nilfs_cpfile_do_get_cpinfo(struct inode *cpfile, __u64 *cnop,
430 size_t cpsz = NILFS_MDT(cpfile)->mi_entry_size;
431 __u64 cur_cno = nilfs_mdt_cno(cpfile), cno = *cnop;
438 down_read(&NILFS_MDT(cpfile)->mi_sem);
442 cpfile, cno, cur_cno - 1, &cno, &bh);
448 ncps = nilfs_cpfile_checkpoints_in_block(cpfile, cno, cur_cno);
451 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);
454 nilfs_cpfile_checkpoint_to_cpinfo(cpfile, cp,
471 up_read(&NILFS_MDT(cpfile)->mi_sem);
475 static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop,
488 down_read(&NILFS_MDT(cpfile)->mi_sem);
491 ret = nilfs_cpfile_get_header_block(cpfile, &bh);
495 header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr);
508 curr_blkoff = nilfs_cpfile_get_blkoff(cpfile, curr);
509 ret = nilfs_cpfile_get_checkpoint_block(cpfile, curr, 0, &bh);
517 cp = nilfs_cpfile_block_get_checkpoint(cpfile, curr, bh, kaddr);
522 nilfs_cpfile_checkpoint_to_cpinfo(cpfile, cp, ci);
529 next_blkoff = nilfs_cpfile_get_blkoff(cpfile, next);
533 ret = nilfs_cpfile_get_checkpoint_block(cpfile, next,
550 up_read(&NILFS_MDT(cpfile)->mi_sem);
556 * @cpfile:
562 ssize_t nilfs_cpfile_get_cpinfo(struct inode *cpfile, __u64 *cnop, int mode,
567 return nilfs_cpfile_do_get_cpinfo(cpfile, cnop, buf, cisz, nci);
569 return nilfs_cpfile_do_get_ssinfo(cpfile, cnop, buf, cisz, nci);
577 * @cpfile:
580 int nilfs_cpfile_delete_checkpoint(struct inode *cpfile, __u64 cno)
586 nci = nilfs_cpfile_do_get_cpinfo(cpfile, &tcno, &ci, sizeof(ci), 1);
594 return nilfs_cpfile_delete_checkpoints(cpfile, cno, cno + 1);
598 nilfs_cpfile_block_get_snapshot_list(const struct inode *cpfile,
608 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);
611 header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr);
617 static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)
630 down_write(&NILFS_MDT(cpfile)->mi_sem);
632 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh);
636 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
649 ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);
653 header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);
661 prev_blkoff = nilfs_cpfile_get_blkoff(cpfile, prev);
666 ret = nilfs_cpfile_get_checkpoint_block(cpfile, curr,
674 cpfile, curr, curr_bh, kaddr);
681 ret = nilfs_cpfile_get_checkpoint_block(cpfile, prev, 0,
692 cpfile, curr, curr_bh, kaddr);
697 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
705 cpfile, prev, prev_bh, kaddr);
710 header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);
718 nilfs_mdt_mark_dirty(cpfile);
732 up_write(&NILFS_MDT(cpfile)->mi_sem);
736 static int nilfs_cpfile_clear_snapshot(struct inode *cpfile, __u64 cno)
748 down_write(&NILFS_MDT(cpfile)->mi_sem);
750 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh);
754 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
771 ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);
775 ret = nilfs_cpfile_get_checkpoint_block(cpfile, next, 0,
784 ret = nilfs_cpfile_get_checkpoint_block(cpfile, prev, 0,
795 cpfile, next, next_bh, kaddr);
801 cpfile, prev, prev_bh, kaddr);
806 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
813 header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);
821 nilfs_mdt_mark_dirty(cpfile);
835 up_write(&NILFS_MDT(cpfile)->mi_sem);
841 * @cpfile: inode of checkpoint file
856 int nilfs_cpfile_is_snapshot(struct inode *cpfile, __u64 cno)
867 if (cno == 0 || cno >= nilfs_mdt_cno(cpfile))
869 down_read(&NILFS_MDT(cpfile)->mi_sem);
871 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &bh);
875 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);
884 up_read(&NILFS_MDT(cpfile)->mi_sem);
890 * @cpfile: inode of checkpoint file
906 int nilfs_cpfile_change_cpmode(struct inode *cpfile, __u64 cno, int mode)
912 if (nilfs_checkpoint_is_mounted(cpfile->i_sb, cno))
921 ret = nilfs_cpfile_clear_snapshot(cpfile, cno);
924 return nilfs_cpfile_set_snapshot(cpfile, cno);
932 * @cpfile: inode of checkpoint file
945 int nilfs_cpfile_get_stat(struct inode *cpfile, struct nilfs_cpstat *cpstat)
952 down_read(&NILFS_MDT(cpfile)->mi_sem);
954 ret = nilfs_cpfile_get_header_block(cpfile, &bh);
958 header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr);
959 cpstat->cs_cno = nilfs_mdt_cno(cpfile);
966 up_read(&NILFS_MDT(cpfile)->mi_sem);
971 * nilfs_cpfile_read - read or get cpfile inode
974 * @raw_inode: on-disk cpfile inode
980 struct inode *cpfile;
991 cpfile = nilfs_iget_locked(sb, NULL, NILFS_CPFILE_INO);
992 if (unlikely(!cpfile))
994 if (!(cpfile->i_state & I_NEW))
997 err = nilfs_mdt_init(cpfile, NILFS_MDT_GFP, 0);
1001 nilfs_mdt_set_entry_size(cpfile, cpsize,
1004 err = nilfs_read_inode_common(cpfile, raw_inode);
1008 unlock_new_inode(cpfile);
1010 *inodep = cpfile;
1013 iget_failed(cpfile);