truncate_inode_pages (9) Linux Manual Page
truncate_inode_pages – truncate *all* the pages from an offset
Synopsis
void truncate_inode_pages(struct address_space *mapping, loff_t lstart);Arguments
mapping
-
- mapping to truncate
lstart
- offset from which to truncate
Description
Called under (and serialised by) inode->i_mutex.
Note
When this function returns, there can be a page in the process of deletion (inside __delete_from_page_cache) in the specified range. Thus mapping->nrpages can be non-zero when this function returns even after truncation of the whole mapping.