70 static int btrfs_remount(struct super_block *sb, int *flags, char *data);
112 	struct super_block *sb = fs_info->sb;  in btrfs_handle_error()  local
114 	if (sb->s_flags & MS_RDONLY)  in btrfs_handle_error()
118 		sb->s_flags |= MS_RDONLY;  in btrfs_handle_error()
141 	struct super_block *sb = fs_info->sb;  in __btrfs_std_error()  local
148 	if (errno == -EROFS && (sb->s_flags & MS_RDONLY))  in __btrfs_std_error()
162 			sb->s_id, function, line, errno, errstr, &vaf);  in __btrfs_std_error()
166 			sb->s_id, function, line, errno, errstr);  in __btrfs_std_error()
171 	if (sb->s_flags & MS_BORN)  in __btrfs_std_error()
188 	struct super_block *sb = fs_info->sb;  in btrfs_printk()  local
210 	printk("%sBTRFS %s (device %s): %pV\n", lvl, type, sb->s_id, &vaf);  in btrfs_printk()
220 	struct super_block *sb = fs_info->sb;  in __btrfs_std_error()  local
226 	if (errno == -EROFS && (sb->s_flags & MS_RDONLY))  in __btrfs_std_error()
230 	if (sb->s_flags & MS_BORN) {  in __btrfs_std_error()
293 		s_id = fs_info->sb->s_id;  in __btrfs_panic()
309 static void btrfs_put_super(struct super_block *sb)  in btrfs_put_super()  argument
311 	close_ctree(btrfs_sb(sb)->tree_root);  in btrfs_put_super()
585 			root->fs_info->sb->s_flags |= MS_POSIXACL;  in btrfs_parse_options()
594 			root->fs_info->sb->s_flags &= ~MS_POSIXACL;  in btrfs_parse_options()
844 static struct dentry *get_default_root(struct super_block *sb,  in get_default_root()  argument
847 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in get_default_root()
904 	if (!(sb->s_flags & MS_RDONLY)) {  in get_default_root()
919 	inode = btrfs_iget(sb, &location, new_root, &new);  in get_default_root()
928 	if (!new && d_inode(sb->s_root) == inode) {  in get_default_root()
930 		return dget(sb->s_root);  in get_default_root()
936 static int btrfs_fill_super(struct super_block *sb,  in btrfs_fill_super()  argument
941 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_fill_super()
945 	sb->s_maxbytes = MAX_LFS_FILESIZE;  in btrfs_fill_super()
946 	sb->s_magic = BTRFS_SUPER_MAGIC;  in btrfs_fill_super()
947 	sb->s_op = &btrfs_super_ops;  in btrfs_fill_super()
948 	sb->s_d_op = &btrfs_dentry_operations;  in btrfs_fill_super()
949 	sb->s_export_op = &btrfs_export_ops;  in btrfs_fill_super()
950 	sb->s_xattr = btrfs_xattr_handlers;  in btrfs_fill_super()
951 	sb->s_time_gran = 1;  in btrfs_fill_super()
953 	sb->s_flags |= MS_POSIXACL;  in btrfs_fill_super()
955 	sb->s_flags |= MS_I_VERSION;  in btrfs_fill_super()
956 	err = open_ctree(sb, fs_devices, (char *)data);  in btrfs_fill_super()
965 	inode = btrfs_iget(sb, &key, fs_info->fs_root, NULL);  in btrfs_fill_super()
971 	sb->s_root = d_make_root(inode);  in btrfs_fill_super()
972 	if (!sb->s_root) {  in btrfs_fill_super()
977 	save_mount_options(sb, data);  in btrfs_fill_super()
978 	cleancache_init_fs(sb);  in btrfs_fill_super()
979 	sb->s_flags |= MS_ACTIVE;  in btrfs_fill_super()
987 int btrfs_sync_fs(struct super_block *sb, int wait)  in btrfs_sync_fs()  argument
990 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_sync_fs()
1018 			if (__sb_start_write(sb, SB_FREEZE_WRITE, false))  in btrfs_sync_fs()
1019 				__sb_end_write(sb, SB_FREEZE_WRITE);  in btrfs_sync_fs()
1073 	if (!(root->fs_info->sb->s_flags & MS_POSIXACL))  in btrfs_show_options()
1265 				  struct super_block *sb,  in setup_security_options()  argument
1274 	ret = security_sb_set_mnt_opts(sb, sec_opts, 0, NULL);  in setup_security_options()
1464 			sync_filesystem(fs_info->sb);  in btrfs_remount_begin()
1477 	     (fs_info->sb->s_flags & MS_RDONLY))) {  in btrfs_remount_cleanup()
1484 static int btrfs_remount(struct super_block *sb, int *flags, char *data)  in btrfs_remount()  argument
1486 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_remount()
1488 	unsigned old_flags = sb->s_flags;  in btrfs_remount()
1497 	sync_filesystem(sb);  in btrfs_remount()
1507 		ret = setup_security_options(fs_info, sb,  in btrfs_remount()
1525 	if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))  in btrfs_remount()
1540 		sb->s_flags |= MS_RDONLY;  in btrfs_remount()
1604 		sb->s_flags &= ~MS_RDONLY;  in btrfs_remount()
1613 	if (sb->s_flags & MS_RDONLY)  in btrfs_remount()
1615 	sb->s_flags = old_flags;  in btrfs_remount()
1928 static void btrfs_kill_super(struct super_block *sb)  in btrfs_kill_super()  argument
1930 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_kill_super()
1931 	kill_anon_super(sb);  in btrfs_kill_super()
1990 static int btrfs_freeze(struct super_block *sb)  in btrfs_freeze()  argument
1993 	struct btrfs_root *root = btrfs_sb(sb)->tree_root;  in btrfs_freeze()