__GENERIC_FILE_AIO_W - Online Linux Manual PageSection : 9
Updated : June 2018
Source : Kernel Hackers Manual 2​.6​.
Note : Memory Management in Linux

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NAME__generic_file_aio_write − write data to a file

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

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ARGUMENTSiocb 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

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DESCRIPTIONThis 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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