truncate_setsize (9) - Linux Man Pages

truncate_setsize: update inode and pagecache for a new file size

NAME

truncate_setsize - update inode and pagecache for a new file size

SYNOPSIS

void truncate_setsize(struct inode inode, loff_t newsize);

ARGUMENTS

inode

inode

newsize

new file size

DESCRIPTION

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.

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