57  * search from @first to find the next perag with the given tag set.
156 	 * we never read counters from such superblocks.  in xfs_validate_sb_write()
291 	 * More sanity checking.  Most of these were stolen directly from  in xfs_validate_sb_common()
387 	 * superblock.  mkfs doesn't clear the flag from secondary supers, so  in xfs_validate_sb_common()
452 	xfs_dsb_t	*from,  in __xfs_sb_from_disk()  argument
455 	to->sb_magicnum = be32_to_cpu(from->sb_magicnum);  in __xfs_sb_from_disk()
456 	to->sb_blocksize = be32_to_cpu(from->sb_blocksize);  in __xfs_sb_from_disk()
457 	to->sb_dblocks = be64_to_cpu(from->sb_dblocks);  in __xfs_sb_from_disk()
458 	to->sb_rblocks = be64_to_cpu(from->sb_rblocks);  in __xfs_sb_from_disk()
459 	to->sb_rextents = be64_to_cpu(from->sb_rextents);  in __xfs_sb_from_disk()
460 	memcpy(&to->sb_uuid, &from->sb_uuid, sizeof(to->sb_uuid));  in __xfs_sb_from_disk()
461 	to->sb_logstart = be64_to_cpu(from->sb_logstart);  in __xfs_sb_from_disk()
462 	to->sb_rootino = be64_to_cpu(from->sb_rootino);  in __xfs_sb_from_disk()
463 	to->sb_rbmino = be64_to_cpu(from->sb_rbmino);  in __xfs_sb_from_disk()
464 	to->sb_rsumino = be64_to_cpu(from->sb_rsumino);  in __xfs_sb_from_disk()
465 	to->sb_rextsize = be32_to_cpu(from->sb_rextsize);  in __xfs_sb_from_disk()
466 	to->sb_agblocks = be32_to_cpu(from->sb_agblocks);  in __xfs_sb_from_disk()
467 	to->sb_agcount = be32_to_cpu(from->sb_agcount);  in __xfs_sb_from_disk()
468 	to->sb_rbmblocks = be32_to_cpu(from->sb_rbmblocks);  in __xfs_sb_from_disk()
469 	to->sb_logblocks = be32_to_cpu(from->sb_logblocks);  in __xfs_sb_from_disk()
470 	to->sb_versionnum = be16_to_cpu(from->sb_versionnum);  in __xfs_sb_from_disk()
471 	to->sb_sectsize = be16_to_cpu(from->sb_sectsize);  in __xfs_sb_from_disk()
472 	to->sb_inodesize = be16_to_cpu(from->sb_inodesize);  in __xfs_sb_from_disk()
473 	to->sb_inopblock = be16_to_cpu(from->sb_inopblock);  in __xfs_sb_from_disk()
474 	memcpy(&to->sb_fname, &from->sb_fname, sizeof(to->sb_fname));  in __xfs_sb_from_disk()
475 	to->sb_blocklog = from->sb_blocklog;  in __xfs_sb_from_disk()
476 	to->sb_sectlog = from->sb_sectlog;  in __xfs_sb_from_disk()
477 	to->sb_inodelog = from->sb_inodelog;  in __xfs_sb_from_disk()
478 	to->sb_inopblog = from->sb_inopblog;  in __xfs_sb_from_disk()
479 	to->sb_agblklog = from->sb_agblklog;  in __xfs_sb_from_disk()
480 	to->sb_rextslog = from->sb_rextslog;  in __xfs_sb_from_disk()
481 	to->sb_inprogress = from->sb_inprogress;  in __xfs_sb_from_disk()
482 	to->sb_imax_pct = from->sb_imax_pct;  in __xfs_sb_from_disk()
483 	to->sb_icount = be64_to_cpu(from->sb_icount);  in __xfs_sb_from_disk()
484 	to->sb_ifree = be64_to_cpu(from->sb_ifree);  in __xfs_sb_from_disk()
485 	to->sb_fdblocks = be64_to_cpu(from->sb_fdblocks);  in __xfs_sb_from_disk()
486 	to->sb_frextents = be64_to_cpu(from->sb_frextents);  in __xfs_sb_from_disk()
487 	to->sb_uquotino = be64_to_cpu(from->sb_uquotino);  in __xfs_sb_from_disk()
488 	to->sb_gquotino = be64_to_cpu(from->sb_gquotino);  in __xfs_sb_from_disk()
489 	to->sb_qflags = be16_to_cpu(from->sb_qflags);  in __xfs_sb_from_disk()
490 	to->sb_flags = from->sb_flags;  in __xfs_sb_from_disk()
491 	to->sb_shared_vn = from->sb_shared_vn;  in __xfs_sb_from_disk()
492 	to->sb_inoalignmt = be32_to_cpu(from->sb_inoalignmt);  in __xfs_sb_from_disk()
493 	to->sb_unit = be32_to_cpu(from->sb_unit);  in __xfs_sb_from_disk()
494 	to->sb_width = be32_to_cpu(from->sb_width);  in __xfs_sb_from_disk()
495 	to->sb_dirblklog = from->sb_dirblklog;  in __xfs_sb_from_disk()
496 	to->sb_logsectlog = from->sb_logsectlog;  in __xfs_sb_from_disk()
497 	to->sb_logsectsize = be16_to_cpu(from->sb_logsectsize);  in __xfs_sb_from_disk()
498 	to->sb_logsunit = be32_to_cpu(from->sb_logsunit);  in __xfs_sb_from_disk()
499 	to->sb_features2 = be32_to_cpu(from->sb_features2);  in __xfs_sb_from_disk()
500 	to->sb_bad_features2 = be32_to_cpu(from->sb_bad_features2);  in __xfs_sb_from_disk()
501 	to->sb_features_compat = be32_to_cpu(from->sb_features_compat);  in __xfs_sb_from_disk()
502 	to->sb_features_ro_compat = be32_to_cpu(from->sb_features_ro_compat);  in __xfs_sb_from_disk()
503 	to->sb_features_incompat = be32_to_cpu(from->sb_features_incompat);  in __xfs_sb_from_disk()
505 				be32_to_cpu(from->sb_features_log_incompat);  in __xfs_sb_from_disk()
508 	to->sb_spino_align = be32_to_cpu(from->sb_spino_align);  in __xfs_sb_from_disk()
509 	to->sb_pquotino = be64_to_cpu(from->sb_pquotino);  in __xfs_sb_from_disk()
510 	to->sb_lsn = be64_to_cpu(from->sb_lsn);  in __xfs_sb_from_disk()
512 	 * sb_meta_uuid is only on disk if it differs from sb_uuid and the  in __xfs_sb_from_disk()
516 		uuid_copy(&to->sb_meta_uuid, &from->sb_meta_uuid);  in __xfs_sb_from_disk()
518 		uuid_copy(&to->sb_meta_uuid, &from->sb_uuid);  in __xfs_sb_from_disk()
527 	xfs_dsb_t	*from)  in xfs_sb_from_disk()  argument
529 	__xfs_sb_from_disk(to, from, true);  in xfs_sb_from_disk()
535 	struct xfs_sb	*from)  in xfs_sb_quota_to_disk()  argument
537 	uint16_t	qflags = from->sb_qflags;  in xfs_sb_quota_to_disk()
539 	to->sb_uquotino = cpu_to_be64(from->sb_uquotino);  in xfs_sb_quota_to_disk()
540 	if (xfs_sb_version_has_pquotino(from)) {  in xfs_sb_quota_to_disk()
541 		to->sb_qflags = cpu_to_be16(from->sb_qflags);  in xfs_sb_quota_to_disk()
542 		to->sb_gquotino = cpu_to_be64(from->sb_gquotino);  in xfs_sb_quota_to_disk()
543 		to->sb_pquotino = cpu_to_be64(from->sb_pquotino);  in xfs_sb_quota_to_disk()
555 	if (from->sb_qflags &  in xfs_sb_quota_to_disk()
558 	if (from->sb_qflags &  in xfs_sb_quota_to_disk()
565 	 * of superblock that do not have pquotino. from->sb_flags  in xfs_sb_quota_to_disk()
572 	if (from->sb_qflags & XFS_GQUOTA_ACCT)  in xfs_sb_quota_to_disk()
573 		to->sb_gquotino = cpu_to_be64(from->sb_gquotino);  in xfs_sb_quota_to_disk()
574 	else if (from->sb_qflags & XFS_PQUOTA_ACCT)  in xfs_sb_quota_to_disk()
575 		to->sb_gquotino = cpu_to_be64(from->sb_pquotino);  in xfs_sb_quota_to_disk()
583 		if (from->sb_gquotino == NULLFSINO &&  in xfs_sb_quota_to_disk()
584 		    from->sb_pquotino == NULLFSINO)  in xfs_sb_quota_to_disk()
594 	struct xfs_sb	*from)  in xfs_sb_to_disk()  argument
596 	xfs_sb_quota_to_disk(to, from);  in xfs_sb_to_disk()
598 	to->sb_magicnum = cpu_to_be32(from->sb_magicnum);  in xfs_sb_to_disk()
599 	to->sb_blocksize = cpu_to_be32(from->sb_blocksize);  in xfs_sb_to_disk()
600 	to->sb_dblocks = cpu_to_be64(from->sb_dblocks);  in xfs_sb_to_disk()
601 	to->sb_rblocks = cpu_to_be64(from->sb_rblocks);  in xfs_sb_to_disk()
602 	to->sb_rextents = cpu_to_be64(from->sb_rextents);  in xfs_sb_to_disk()
603 	memcpy(&to->sb_uuid, &from->sb_uuid, sizeof(to->sb_uuid));  in xfs_sb_to_disk()
604 	to->sb_logstart = cpu_to_be64(from->sb_logstart);  in xfs_sb_to_disk()
605 	to->sb_rootino = cpu_to_be64(from->sb_rootino);  in xfs_sb_to_disk()
606 	to->sb_rbmino = cpu_to_be64(from->sb_rbmino);  in xfs_sb_to_disk()
607 	to->sb_rsumino = cpu_to_be64(from->sb_rsumino);  in xfs_sb_to_disk()
608 	to->sb_rextsize = cpu_to_be32(from->sb_rextsize);  in xfs_sb_to_disk()
609 	to->sb_agblocks = cpu_to_be32(from->sb_agblocks);  in xfs_sb_to_disk()
610 	to->sb_agcount = cpu_to_be32(from->sb_agcount);  in xfs_sb_to_disk()
611 	to->sb_rbmblocks = cpu_to_be32(from->sb_rbmblocks);  in xfs_sb_to_disk()
612 	to->sb_logblocks = cpu_to_be32(from->sb_logblocks);  in xfs_sb_to_disk()
613 	to->sb_versionnum = cpu_to_be16(from->sb_versionnum);  in xfs_sb_to_disk()
614 	to->sb_sectsize = cpu_to_be16(from->sb_sectsize);  in xfs_sb_to_disk()
615 	to->sb_inodesize = cpu_to_be16(from->sb_inodesize);  in xfs_sb_to_disk()
616 	to->sb_inopblock = cpu_to_be16(from->sb_inopblock);  in xfs_sb_to_disk()
617 	memcpy(&to->sb_fname, &from->sb_fname, sizeof(to->sb_fname));  in xfs_sb_to_disk()
618 	to->sb_blocklog = from->sb_blocklog;  in xfs_sb_to_disk()
619 	to->sb_sectlog = from->sb_sectlog;  in xfs_sb_to_disk()
620 	to->sb_inodelog = from->sb_inodelog;  in xfs_sb_to_disk()
621 	to->sb_inopblog = from->sb_inopblog;  in xfs_sb_to_disk()
622 	to->sb_agblklog = from->sb_agblklog;  in xfs_sb_to_disk()
623 	to->sb_rextslog = from->sb_rextslog;  in xfs_sb_to_disk()
624 	to->sb_inprogress = from->sb_inprogress;  in xfs_sb_to_disk()
625 	to->sb_imax_pct = from->sb_imax_pct;  in xfs_sb_to_disk()
626 	to->sb_icount = cpu_to_be64(from->sb_icount);  in xfs_sb_to_disk()
627 	to->sb_ifree = cpu_to_be64(from->sb_ifree);  in xfs_sb_to_disk()
628 	to->sb_fdblocks = cpu_to_be64(from->sb_fdblocks);  in xfs_sb_to_disk()
629 	to->sb_frextents = cpu_to_be64(from->sb_frextents);  in xfs_sb_to_disk()
631 	to->sb_flags = from->sb_flags;  in xfs_sb_to_disk()
632 	to->sb_shared_vn = from->sb_shared_vn;  in xfs_sb_to_disk()
633 	to->sb_inoalignmt = cpu_to_be32(from->sb_inoalignmt);  in xfs_sb_to_disk()
634 	to->sb_unit = cpu_to_be32(from->sb_unit);  in xfs_sb_to_disk()
635 	to->sb_width = cpu_to_be32(from->sb_width);  in xfs_sb_to_disk()
636 	to->sb_dirblklog = from->sb_dirblklog;  in xfs_sb_to_disk()
637 	to->sb_logsectlog = from->sb_logsectlog;  in xfs_sb_to_disk()
638 	to->sb_logsectsize = cpu_to_be16(from->sb_logsectsize);  in xfs_sb_to_disk()
639 	to->sb_logsunit = cpu_to_be32(from->sb_logsunit);  in xfs_sb_to_disk()
646 	from->sb_bad_features2 = from->sb_features2;  in xfs_sb_to_disk()
647 	to->sb_features2 = cpu_to_be32(from->sb_features2);  in xfs_sb_to_disk()
648 	to->sb_bad_features2 = cpu_to_be32(from->sb_bad_features2);  in xfs_sb_to_disk()
650 	if (xfs_sb_version_hascrc(from)) {  in xfs_sb_to_disk()
651 		to->sb_features_compat = cpu_to_be32(from->sb_features_compat);  in xfs_sb_to_disk()
653 				cpu_to_be32(from->sb_features_ro_compat);  in xfs_sb_to_disk()
655 				cpu_to_be32(from->sb_features_incompat);  in xfs_sb_to_disk()
657 				cpu_to_be32(from->sb_features_log_incompat);  in xfs_sb_to_disk()
658 		to->sb_spino_align = cpu_to_be32(from->sb_spino_align);  in xfs_sb_to_disk()
659 		to->sb_lsn = cpu_to_be64(from->sb_lsn);  in xfs_sb_to_disk()
660 		if (xfs_sb_version_hasmetauuid(from))  in xfs_sb_to_disk()
661 			uuid_copy(&to->sb_meta_uuid, &from->sb_meta_uuid);  in xfs_sb_to_disk()
688 	 * superblock from disk order just to check the version number  in xfs_sb_read_verify()
795  * fields from the superblock associated with the given
891 	 * will prevent xfs_repair from fixing anything.  in xfs_initialize_perag_data()
915  * level of locking that is needed to protect the in-core superblock from
967  * secondary superblock buffers, there is no need to read them in from disk.