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- jessie 3.16.56-1+deb8u1
__GENERIC_FILE_WRITE(9) | Memory Management in Linux | __GENERIC_FILE_WRITE(9) |
NAME¶
__generic_file_write_iter - write data to a fileSYNOPSIS¶
ssize_t
__generic_file_write_iter(struct kiocb * iocb,
struct iov_iter * from);
ARGUMENTS¶
iocbIO state structure (file, offset, etc.)
from
iov_iter with data 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¶
May 2018 | Kernel Hackers Manual 3.16 |