__generic_file_aio_write - write data to a file
2. SYNOPSIS ▲
ssize_t __generic_file_aio_write(struct kiocb * iocb , const struct iovec * iov , unsigned long nr_segs , loff_t * ppos );
3. ARGUMENTS ▲
IO state structure (file, offset, etc.)
vector with data to write
number of segments in the vector
position where to write
4. 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.
5. COPYRIGHT ▲