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__generic_file_aio_write
Langue: en
Version: October 2010 (fedora - 01/12/10)
Section: 9 (Appels noyau Linux)
NAME
__generic_file_aio_write - write data to a fileSYNOPSIS
- 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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