centos man page for inode_dio_wait

INODE_DIO_WAIT(9)						   The Linux VFS						 INODE_DIO_WAIT(9)

NAME
       inode_dio_wait - wait for outstanding DIO requests to finish

SYNOPSIS
       void inode_dio_wait(struct inode * inode);

ARGUMENTS
       inode
	   inode to wait for

DESCRIPTION
       Waits for all pending direct I/O requests to finish so that we can proceed with a truncate or equivalent operation.

       Must be called under a lock that serializes taking new references to i_dio_count, usually by inode->i_mutex.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							 INODE_DIO_WAIT(9)