56 static int read_block(struct inode *inode, void *addr, unsigned int block,  in read_block()  argument
59 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in read_block()
64 	data_key_init(c, &key, inode->i_ino, block);  in read_block()
74 		     ubifs_inode(inode)->creat_sqnum);  in read_block()
98 		  block, inode->i_ino);  in read_block()
109 	struct inode *inode = page->mapping->host;  in do_readpage()  local
110 	loff_t i_size = i_size_read(inode);  in do_readpage()
113 		inode->i_ino, page->index, i_size, page->flags);  in do_readpage()
143 			ret = read_block(inode, addr, block, dn);  in do_readpage()
162 		struct ubifs_info *c = inode->i_sb->s_fs_info;  in do_readpage()
170 			  page->index, inode->i_ino, err);  in do_readpage()
224 	struct inode *inode = mapping->host;  in write_begin_slow()  local
225 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in write_begin_slow()
228 	int uninitialized_var(err), appending = !!(pos + len > inode->i_size);  in write_begin_slow()
232 		inode->i_ino, pos, len, inode->i_size);  in write_begin_slow()
295 		struct ubifs_inode *ui = ubifs_inode(inode);  in write_begin_slow()
428 	struct inode *inode = mapping->host;  in ubifs_write_begin()  local
429 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_write_begin()
430 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_write_begin()
432 	int uninitialized_var(err), appending = !!(pos + len > inode->i_size);  in ubifs_write_begin()
436 	ubifs_assert(ubifs_inode(inode)->ui_size == inode->i_size);  in ubifs_write_begin()
543 	struct inode *inode = mapping->host;  in ubifs_write_end()  local
544 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_write_end()
545 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_write_end()
547 	int appending = !!(end_pos > inode->i_size);  in ubifs_write_end()
550 		inode->i_ino, pos, page->index, len, copied, inode->i_size);  in ubifs_write_end()
582 		i_size_write(inode, end_pos);  in ubifs_write_end()
589 		__mark_inode_dirty(inode, I_DIRTY_DATASYNC);  in ubifs_write_end()
613 	struct inode *inode = page->mapping->host;  in populate_page()  local
614 	loff_t i_size = i_size_read(inode);  in populate_page()
620 		inode->i_ino, page->index, i_size, page->flags);  in populate_page()
644 				     ubifs_inode(inode)->creat_sqnum);  in populate_page()
701 		  page_block, inode->i_ino);  in populate_page()
718 	struct inode *inode = mapping->host;  in ubifs_do_bulk_read()  local
719 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_do_bulk_read()
773 	isize = i_size_read(inode);  in ubifs_do_bulk_read()
823 	struct inode *inode = page->mapping->host;  in ubifs_bulk_read()  local
824 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_bulk_read()
825 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_bulk_read()
873 	data_key_init(c, &bu->key, inode->i_ino,  in ubifs_bulk_read()
902 	struct inode *inode = page->mapping->host;  in do_writepage()  local
903 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in do_writepage()
906 	struct ubifs_inode *ui = ubifs_inode(inode);  in do_writepage()
920 		data_key_init(c, &key, inode->i_ino, block);  in do_writepage()
921 		err = ubifs_jnl_write_data(c, inode, &key, addr, blen);  in do_writepage()
933 			  page->index, inode->i_ino, err);  in do_writepage()
1001 	struct inode *inode = page->mapping->host;  in ubifs_writepage()  local
1002 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_writepage()
1003 	loff_t i_size =  i_size_read(inode), synced_i_size;  in ubifs_writepage()
1009 		inode->i_ino, page->index, page->flags);  in ubifs_writepage()
1025 			err = inode->i_sb->s_op->write_inode(inode, NULL);  in ubifs_writepage()
1053 		err = inode->i_sb->s_op->write_inode(inode, NULL);  in ubifs_writepage()
1070 static void do_attr_changes(struct inode *inode, const struct iattr *attr)  in do_attr_changes()  argument
1073 		inode->i_uid = attr->ia_uid;  in do_attr_changes()
1075 		inode->i_gid = attr->ia_gid;  in do_attr_changes()
1077 		inode->i_atime = timespec_trunc(attr->ia_atime,  in do_attr_changes()
1078 						inode->i_sb->s_time_gran);  in do_attr_changes()
1080 		inode->i_mtime = timespec_trunc(attr->ia_mtime,  in do_attr_changes()
1081 						inode->i_sb->s_time_gran);  in do_attr_changes()
1083 		inode->i_ctime = timespec_trunc(attr->ia_ctime,  in do_attr_changes()
1084 						inode->i_sb->s_time_gran);  in do_attr_changes()
1088 		if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))  in do_attr_changes()
1090 		inode->i_mode = mode;  in do_attr_changes()
1104 static int do_truncation(struct ubifs_info *c, struct inode *inode,  in do_truncation()  argument
1109 	loff_t old_size = inode->i_size, new_size = attr->ia_size;  in do_truncation()
1111 	struct ubifs_inode *ui = ubifs_inode(inode);  in do_truncation()
1113 	dbg_gen("ino %lu, size %lld -> %lld", inode->i_ino, old_size, new_size);  in do_truncation()
1138 	truncate_setsize(inode, new_size);  in do_truncation()
1144 		page = find_lock_page(inode->i_mapping, index);  in do_truncation()
1182 	ui->ui_size = inode->i_size;  in do_truncation()
1184 	inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);  in do_truncation()
1186 	do_attr_changes(inode, attr);  in do_truncation()
1187 	err = ubifs_jnl_truncate(c, inode, old_size, new_size);  in do_truncation()
1210 static int do_setattr(struct ubifs_info *c, struct inode *inode,  in do_setattr()  argument
1215 	struct ubifs_inode *ui = ubifs_inode(inode);  in do_setattr()
1224 		dbg_gen("size %lld -> %lld", inode->i_size, new_size);  in do_setattr()
1225 		truncate_setsize(inode, new_size);  in do_setattr()
1231 		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);  in do_setattr()
1233 		ui->ui_size = inode->i_size;  in do_setattr()
1236 	do_attr_changes(inode, attr);  in do_setattr()
1244 		 __mark_inode_dirty(inode, I_DIRTY_SYNC | I_DIRTY_DATASYNC);  in do_setattr()
1246 		mark_inode_dirty_sync(inode);  in do_setattr()
1251 	if (IS_SYNC(inode))  in do_setattr()
1252 		err = inode->i_sb->s_op->write_inode(inode, NULL);  in do_setattr()
1259 	struct inode *inode = d_inode(dentry);  in ubifs_setattr()  local
1260 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_setattr()
1263 		inode->i_ino, inode->i_mode, attr->ia_valid);  in ubifs_setattr()
1264 	err = inode_change_ok(inode, attr);  in ubifs_setattr()
1268 	err = dbg_check_synced_i_size(c, inode);  in ubifs_setattr()
1272 	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size < inode->i_size)  in ubifs_setattr()
1274 		err = do_truncation(c, inode, attr);  in ubifs_setattr()
1276 		err = do_setattr(c, inode, attr);  in ubifs_setattr()
1284 	struct inode *inode = page->mapping->host;  in ubifs_invalidatepage()  local
1285 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_invalidatepage()
1304 	struct inode *inode = file->f_mapping->host;  in ubifs_fsync()  local
1305 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_fsync()
1308 	dbg_gen("syncing inode %lu", inode->i_ino);  in ubifs_fsync()
1317 	err = filemap_write_and_wait_range(inode->i_mapping, start, end);  in ubifs_fsync()
1320 	mutex_lock(&inode->i_mutex);  in ubifs_fsync()
1323 	if (!datasync || (inode->i_state & I_DIRTY_DATASYNC)) {  in ubifs_fsync()
1324 		err = inode->i_sb->s_op->write_inode(inode, NULL);  in ubifs_fsync()
1333 	err = ubifs_sync_wbufs_by_inode(c, inode);  in ubifs_fsync()
1335 	mutex_unlock(&inode->i_mutex);  in ubifs_fsync()
1348 static inline int mctime_update_needed(const struct inode *inode,  in mctime_update_needed()  argument
1351 	if (!timespec_equal(&inode->i_mtime, now) ||  in mctime_update_needed()
1352 	    !timespec_equal(&inode->i_ctime, now))  in mctime_update_needed()
1364 int ubifs_update_time(struct inode *inode, struct timespec *time,  in ubifs_update_time()  argument
1367 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_update_time()
1368 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_update_time()
1380 		inode->i_atime = *time;  in ubifs_update_time()
1382 		inode->i_ctime = *time;  in ubifs_update_time()
1384 		inode->i_mtime = *time;  in ubifs_update_time()
1386 	if (!(inode->i_sb->s_flags & MS_LAZYTIME))  in ubifs_update_time()
1390 	__mark_inode_dirty(inode, iflags);  in ubifs_update_time()
1406 static int update_mctime(struct inode *inode)  in update_mctime()  argument
1408 	struct timespec now = ubifs_current_time(inode);  in update_mctime()
1409 	struct ubifs_inode *ui = ubifs_inode(inode);  in update_mctime()
1410 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in update_mctime()
1412 	if (mctime_update_needed(inode, &now)) {  in update_mctime()
1422 		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);  in update_mctime()
1424 		mark_inode_dirty_sync(inode);  in update_mctime()
1478 	struct inode *inode = file_inode(vma->vm_file);  in ubifs_vm_page_mkwrite()  local
1479 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_vm_page_mkwrite()
1480 	struct timespec now = ubifs_current_time(inode);  in ubifs_vm_page_mkwrite()
1484 	dbg_gen("ino %lu, pg %lu, i_size %lld",	inode->i_ino, page->index,  in ubifs_vm_page_mkwrite()
1485 		i_size_read(inode));  in ubifs_vm_page_mkwrite()
1509 	update_time = mctime_update_needed(inode, &now);  in ubifs_vm_page_mkwrite()
1521 				   inode->i_ino);  in ubifs_vm_page_mkwrite()
1526 	if (unlikely(page->mapping != inode->i_mapping ||  in ubifs_vm_page_mkwrite()
1527 		     page_offset(page) > i_size_read(inode))) {  in ubifs_vm_page_mkwrite()
1545 		struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_vm_page_mkwrite()
1548 		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);  in ubifs_vm_page_mkwrite()
1550 		mark_inode_dirty_sync(inode);  in ubifs_vm_page_mkwrite()