centos man page for __generic_file_aio_write

__GENERIC_FILE_AIO_W(9) 				    Memory Management in Linux					   __GENERIC_FILE_AIO_W(9)

NAME
       __generic_file_aio_write - write data to a file

SYNOPSIS
       ssize_t __generic_file_aio_write(struct kiocb * iocb, const struct iovec * iov, unsigned long nr_segs, loff_t * ppos);

ARGUMENTS
       iocb
	   IO state structure (file, offset, etc.)

       iov
	   vector with data to write

       nr_segs
	   number of segments in the vector

       ppos
	   position where to write

DESCRIPTION
       This function does all the work needed for actually writing data to a file. It does all basic checks, removes SUID from the file, updates
       modification times and calls proper subroutines depending on whether we do direct IO or a standard buffered write.

       It expects i_mutex to be grabbed unless we work on a block device or similar object which does not need locking at all.

       This function does *not* take care of syncing data in case of O_SYNC write. A caller has to handle it. This is mainly due to the fact that
       we want to avoid syncing under i_mutex.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   __GENERIC_FILE_AIO_W(9)