linux-master/mm/truncate.c

299  * @lstart: offset from which to truncate
304  * if lstart or lend + 1 is not page aligned).
321 				loff_t lstart, loff_t lend)
341 	start = (lstart + PAGE_SIZE - 1) >> PAGE_SHIFT;
366 	same_folio = (lstart >> PAGE_SHIFT) == (lend >> PAGE_SHIFT);
367 	folio = __filemap_get_folio(mapping, lstart >> PAGE_SHIFT, FGP_LOCK, 0);
370 		if (!truncate_inode_partial_folio(folio, lstart, lend)) {
384 			if (!truncate_inode_partial_folio(folio, lstart, lend))
427  * @lstart: offset from which to truncate
437 void truncate_inode_pages(struct address_space *mapping, loff_t lstart)
439 	truncate_inode_pages_range(mapping, lstart, (loff_t)-1);
815  * @lstart: offset of beginning of hole
825 void truncate_pagecache_range(struct inode *inode, loff_t lstart, loff_t lend)
828 	loff_t unmap_start = round_up(lstart, PAGE_SIZE);
846 	truncate_inode_pages_range(mapping, lstart, lend);