drop_super

函数名称：drop_super

函数原型：void drop_super(struct super_block *sb)

返回类型：void

参数：

类型	参数	名称
struct super_block *	sb

638

lease a read lock

639

put_super - drop a temporary reference to superblock*@sb: superblock in question* Drops a temporary reference, frees superblock if there's no* references left.

**调用者**
名称	描述
vfs_ustat
fsync_bdev	Write out and wait upon all dirty data associated with this* device. Filesystem data as well as the underlying block* device. Takes the superblock lock.
freeze_bdev	ze_bdev -- lock a filesystem and force it into a consistent state@bdev: blockdevice to lock If a superblock is found on this device, we take the s_umount semaphore* on it to make sure nobody unmounts until the snapshot creation is done
__invalidate_device
kernel_quotactl	This is the system call interface. This communicates with* the user-level programs. Currently this only supports diskquota* calls. Maybe we need to add the process quotas etc. in the future,* but we probably should use rlimits for that.

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