truncate_setsize — update inode and pagecache for a new file size
void truncate_setsize ( | struct inode * inode, |
loff_t newsize); |
truncate_setsize updates i_size and performs pagecache truncation (if
necessary) to newsize. It will be typically be called from the filesystem's
setattr function when ATTR_SIZE is passed in.
Must be called with a lock serializing truncates and writes (generally i_mutex but e.g. xfs uses a different lock) and before all filesystem specific block truncation has been performed.