i_size_write

函数名称：NOTE: unlike i_size_read(), i_size_write() does need locking around it* (normally i_mutex), otherwise on 32bit/SMP an update of i_size_seqcount* can be lost, resulting in subsequent i_size_read() calls spinning forever.

函数原型：static inline void i_size_write(struct inode *inode, loff_t i_size)

返回类型：void

参数：

类型	参数	名称
struct inode *	inode
loff_t	i_size

**调用者**
名称	描述
generic_file_direct_write
truncate_setsize	runcate_setsize - update inode and pagecache for a new file size@inode: inode@newsize: new file size* truncate_setsize updates i_size and performs pagecache truncation (if* necessary) to @newsize. It will be typically be called from the filesystem's
blkpg_ioctl
sel_open_policy
simple_write_end	simple_write_end - .write_end helper for non-block-device FSes@file: See .write_end of address_space_operations@mapping: "@pos: "@len: "@copied: "@page: "@fsdata: " simple_write_end does the minimum needed for updating a page after writing is
fsstack_copy_inode_size	does _NOT_ require i_mutex to be held.* This function cannot be inlined since i_size_{read,write} is rather* heavy-weight on 32-bit systems
generic_write_end
nobh_write_end
check_disk_size_change	heck_disk_size_change - checks for disk size change and adjusts bdev size
bd_set_size
iomap_write_end
iomap_dio_inline_actor
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