57 static int read_block(struct inode *inode, void *addr, unsigned int block,  in read_block()  argument
60 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in read_block()
65 	data_key_init(c, &key, inode->i_ino, block);  in read_block()
75 		     ubifs_inode(inode)->creat_sqnum);  in read_block()
99 		  block, inode->i_ino);  in read_block()
110 	struct inode *inode = page->mapping->host;  in do_readpage()  local
111 	loff_t i_size = i_size_read(inode);  in do_readpage()
114 		inode->i_ino, page->index, i_size, page->flags);  in do_readpage()
144 			ret = read_block(inode, addr, block, dn);  in do_readpage()
163 		struct ubifs_info *c = inode->i_sb->s_fs_info;  in do_readpage()
171 			  page->index, inode->i_ino, err);  in do_readpage()
225 	struct inode *inode = mapping->host;  in write_begin_slow()  local
226 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in write_begin_slow()
229 	int uninitialized_var(err), appending = !!(pos + len > inode->i_size);  in write_begin_slow()
233 		inode->i_ino, pos, len, inode->i_size);  in write_begin_slow()
296 		struct ubifs_inode *ui = ubifs_inode(inode);  in write_begin_slow()
429 	struct inode *inode = mapping->host;  in ubifs_write_begin()  local
430 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_write_begin()
431 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_write_begin()
433 	int uninitialized_var(err), appending = !!(pos + len > inode->i_size);  in ubifs_write_begin()
437 	ubifs_assert(ubifs_inode(inode)->ui_size == inode->i_size);  in ubifs_write_begin()
544 	struct inode *inode = mapping->host;  in ubifs_write_end()  local
545 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_write_end()
546 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_write_end()
548 	int appending = !!(end_pos > inode->i_size);  in ubifs_write_end()
551 		inode->i_ino, pos, page->index, len, copied, inode->i_size);  in ubifs_write_end()
583 		i_size_write(inode, end_pos);  in ubifs_write_end()
590 		__mark_inode_dirty(inode, I_DIRTY_DATASYNC);  in ubifs_write_end()
614 	struct inode *inode = page->mapping->host;  in populate_page()  local
615 	loff_t i_size = i_size_read(inode);  in populate_page()
621 		inode->i_ino, page->index, i_size, page->flags);  in populate_page()
645 				     ubifs_inode(inode)->creat_sqnum);  in populate_page()
702 		  page_block, inode->i_ino);  in populate_page()
719 	struct inode *inode = mapping->host;  in ubifs_do_bulk_read()  local
720 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_do_bulk_read()
774 	isize = i_size_read(inode);  in ubifs_do_bulk_read()
824 	struct inode *inode = page->mapping->host;  in ubifs_bulk_read()  local
825 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_bulk_read()
826 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_bulk_read()
874 	data_key_init(c, &bu->key, inode->i_ino,  in ubifs_bulk_read()
903 	struct inode *inode = page->mapping->host;  in do_writepage()  local
904 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in do_writepage()
907 	struct ubifs_inode *ui = ubifs_inode(inode);  in do_writepage()
921 		data_key_init(c, &key, inode->i_ino, block);  in do_writepage()
922 		err = ubifs_jnl_write_data(c, inode, &key, addr, blen);  in do_writepage()
934 			  page->index, inode->i_ino, err);  in do_writepage()
1002 	struct inode *inode = page->mapping->host;  in ubifs_writepage()  local
1003 	struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_writepage()
1004 	loff_t i_size =  i_size_read(inode), synced_i_size;  in ubifs_writepage()
1010 		inode->i_ino, page->index, page->flags);  in ubifs_writepage()
1026 			err = inode->i_sb->s_op->write_inode(inode, NULL);  in ubifs_writepage()
1054 		err = inode->i_sb->s_op->write_inode(inode, NULL);  in ubifs_writepage()
1071 static void do_attr_changes(struct inode *inode, const struct iattr *attr)  in do_attr_changes()  argument
1074 		inode->i_uid = attr->ia_uid;  in do_attr_changes()
1076 		inode->i_gid = attr->ia_gid;  in do_attr_changes()
1078 		inode->i_atime = timespec_trunc(attr->ia_atime,  in do_attr_changes()
1079 						inode->i_sb->s_time_gran);  in do_attr_changes()
1081 		inode->i_mtime = timespec_trunc(attr->ia_mtime,  in do_attr_changes()
1082 						inode->i_sb->s_time_gran);  in do_attr_changes()
1084 		inode->i_ctime = timespec_trunc(attr->ia_ctime,  in do_attr_changes()
1085 						inode->i_sb->s_time_gran);  in do_attr_changes()
1089 		if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))  in do_attr_changes()
1091 		inode->i_mode = mode;  in do_attr_changes()
1105 static int do_truncation(struct ubifs_info *c, struct inode *inode,  in do_truncation()  argument
1110 	loff_t old_size = inode->i_size, new_size = attr->ia_size;  in do_truncation()
1112 	struct ubifs_inode *ui = ubifs_inode(inode);  in do_truncation()
1114 	dbg_gen("ino %lu, size %lld -> %lld", inode->i_ino, old_size, new_size);  in do_truncation()
1139 	truncate_setsize(inode, new_size);  in do_truncation()
1145 		page = find_lock_page(inode->i_mapping, index);  in do_truncation()
1183 	ui->ui_size = inode->i_size;  in do_truncation()
1185 	inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);  in do_truncation()
1187 	do_attr_changes(inode, attr);  in do_truncation()
1188 	err = ubifs_jnl_truncate(c, inode, old_size, new_size);  in do_truncation()
1211 static int do_setattr(struct ubifs_info *c, struct inode *inode,  in do_setattr()  argument
1216 	struct ubifs_inode *ui = ubifs_inode(inode);  in do_setattr()
1225 		dbg_gen("size %lld -> %lld", inode->i_size, new_size);  in do_setattr()
1226 		truncate_setsize(inode, new_size);  in do_setattr()
1232 		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);  in do_setattr()
1234 		ui->ui_size = inode->i_size;  in do_setattr()
1237 	do_attr_changes(inode, attr);  in do_setattr()
1245 		 __mark_inode_dirty(inode, I_DIRTY_SYNC | I_DIRTY_DATASYNC);  in do_setattr()
1247 		mark_inode_dirty_sync(inode);  in do_setattr()
1252 	if (IS_SYNC(inode))  in do_setattr()
1253 		err = inode->i_sb->s_op->write_inode(inode, NULL);  in do_setattr()
1260 	struct inode *inode = d_inode(dentry);  in ubifs_setattr()  local
1261 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_setattr()
1264 		inode->i_ino, inode->i_mode, attr->ia_valid);  in ubifs_setattr()
1265 	err = inode_change_ok(inode, attr);  in ubifs_setattr()
1269 	err = dbg_check_synced_i_size(c, inode);  in ubifs_setattr()
1273 	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size < inode->i_size)  in ubifs_setattr()
1275 		err = do_truncation(c, inode, attr);  in ubifs_setattr()
1277 		err = do_setattr(c, inode, attr);  in ubifs_setattr()
1285 	struct inode *inode = page->mapping->host;  in ubifs_invalidatepage()  local
1286 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_invalidatepage()
1313 	struct inode *inode = file->f_mapping->host;  in ubifs_fsync()  local
1314 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_fsync()
1317 	dbg_gen("syncing inode %lu", inode->i_ino);  in ubifs_fsync()
1326 	err = filemap_write_and_wait_range(inode->i_mapping, start, end);  in ubifs_fsync()
1329 	mutex_lock(&inode->i_mutex);  in ubifs_fsync()
1332 	if (!datasync || (inode->i_state & I_DIRTY_DATASYNC)) {  in ubifs_fsync()
1333 		err = inode->i_sb->s_op->write_inode(inode, NULL);  in ubifs_fsync()
1342 	err = ubifs_sync_wbufs_by_inode(c, inode);  in ubifs_fsync()
1344 	mutex_unlock(&inode->i_mutex);  in ubifs_fsync()
1357 static inline int mctime_update_needed(const struct inode *inode,  in mctime_update_needed()  argument
1360 	if (!timespec_equal(&inode->i_mtime, now) ||  in mctime_update_needed()
1361 	    !timespec_equal(&inode->i_ctime, now))  in mctime_update_needed()
1374 static int update_mctime(struct inode *inode)  in update_mctime()  argument
1376 	struct timespec now = ubifs_current_time(inode);  in update_mctime()
1377 	struct ubifs_inode *ui = ubifs_inode(inode);  in update_mctime()
1378 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in update_mctime()
1380 	if (mctime_update_needed(inode, &now)) {  in update_mctime()
1390 		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);  in update_mctime()
1392 		mark_inode_dirty_sync(inode);  in update_mctime()
1446 	struct inode *inode = file_inode(vma->vm_file);  in ubifs_vm_page_mkwrite()  local
1447 	struct ubifs_info *c = inode->i_sb->s_fs_info;  in ubifs_vm_page_mkwrite()
1448 	struct timespec now = ubifs_current_time(inode);  in ubifs_vm_page_mkwrite()
1452 	dbg_gen("ino %lu, pg %lu, i_size %lld",	inode->i_ino, page->index,  in ubifs_vm_page_mkwrite()
1453 		i_size_read(inode));  in ubifs_vm_page_mkwrite()
1477 	update_time = mctime_update_needed(inode, &now);  in ubifs_vm_page_mkwrite()
1489 				   inode->i_ino);  in ubifs_vm_page_mkwrite()
1494 	if (unlikely(page->mapping != inode->i_mapping ||  in ubifs_vm_page_mkwrite()
1495 		     page_offset(page) > i_size_read(inode))) {  in ubifs_vm_page_mkwrite()
1513 		struct ubifs_inode *ui = ubifs_inode(inode);  in ubifs_vm_page_mkwrite()
1516 		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);  in ubifs_vm_page_mkwrite()
1518 		mark_inode_dirty_sync(inode);  in ubifs_vm_page_mkwrite()