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.

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