inode_newsize

函数名称：de_newsize_ok - may this inode be truncated to a given size*@inode: the inode to be truncated*@offset: the new size to assign to the inode* inode_newsize_ok must be called with i_mutex held

函数原型：int inode_newsize_ok(const struct inode *inode, loff_t offset)

返回类型：int

参数：

类型	参数	名称
const struct inode *	inode
loff_t	offset

**调用者**
名称	描述
setattr_prepare	setattr_prepare - check if attribute changes to a dentry are allowed@dentry: dentry to check@attr: attributes to change* Check if we are allowed to change the attributes contained in @attr* in the given dentry
generic_cont_expand_simple	lity function for filesystems that need to do work on expanding* truncates. Uses filesystem pagecache writes to allow the filesystem to* deal with the hole.
ramfs_nommu_expand_for_mapping	add a contiguous set of pages into a ramfs inode when it's truncated from* size 0 on the assumption that it's going to be used for an mmap of shared* memory

函数逻辑报告