mnt_want_write

函数名称：mnt_want_write_file - get write access to a file's mount*@file: the file who's mount on which to take a write* This is like mnt_want_write, but it takes a file and can* do some optimisations if the file is open for write already

函数原型：int mnt_want_write_file(struct file *file)

返回类型：int

参数：

类型	参数	名称
struct file *	file

412

sb_start_write - get write access to a superblock*@sb: the super we write to* When a process wants to write data or metadata to a file system (i.e. dirty* a page or an inode), it should embed the operation in a sb_start_write() -

413

ret等于__mnt_want_write_file - get write access to a file's mount*@file: the file who's mount on which to take a write* This is like __mnt_want_write, but it takes a file and can* do some optimisations if the file is open for write already

414

如果ret则超级块解除写访问

416

返回:ret

**调用者**
名称	描述
vfs_dedupe_file_range_one
SYSCALL_DEFINE5
SYSCALL_DEFINE2
fscrypt_ioctl_set_policy
fsverity_ioctl_enable	sverity_ioctl_enable() - enable verity on a file* Enable fs-verity on a file. See the "FS_IOC_ENABLE_VERITY" section of* Documentation/filesystems/fsverity.rst for the documentation.* Return: 0 on success, -errno on failure

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告