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| __GENERIC_FILE_AIO_W(9) | Memory Management in Linux | __GENERIC_FILE_AIO_W(9) |
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¶
iocbIO 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.COPYRIGHT¶
| March 2016 | Kernel Hackers Manual 3.2. |