1__GENERIC_FILE_AIO_W(9)   Memory Management in Linux   __GENERIC_FILE_AIO_W(9)
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NAME

6       __generic_file_aio_write - write data to a file
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SYNOPSIS

9       ssize_t __generic_file_aio_write(struct kiocb * iocb,
10                                        const struct iovec * iov,
11                                        unsigned long nr_segs, loff_t * ppos);
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ARGUMENTS

14       iocb
15           IO state structure (file, offset, etc.)
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17       iov
18           vector with data to write
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20       nr_segs
21           number of segments in the vector
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23       ppos
24           position where to write
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DESCRIPTION

27       This function does all the work needed for actually writing data to a
28       file. It does all basic checks, removes SUID from the file, updates
29       modification times and calls proper subroutines depending on whether we
30       do direct IO or a standard buffered write.
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32       It expects i_mutex to be grabbed unless we work on a block device or
33       similar object which does not need locking at all.
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35       This function does *not* take care of syncing data in case of O_SYNC
36       write. A caller has to handle it. This is mainly due to the fact that
37       we want to avoid syncing under i_mutex.
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40Kernel Hackers Manual 2.6.         June 2019           __GENERIC_FILE_AIO_W(9)
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