[PATCH 36/48] truncate: Skip known-truncated indices
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: 2021-12-08 04:25:25
Also in:
linux-fsdevel
Subsystem:
memory management, page cache, the rest · Maintainers:
Andrew Morton, Matthew Wilcox, Linus Torvalds
If we've truncated an entire folio, we can skip over all the indices covered by this folio. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> --- mm/truncate.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/mm/truncate.c b/mm/truncate.c
index 0000424fc56b..0df420c1cf5b 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c@@ -408,6 +408,7 @@ void truncate_inode_pages_range(struct address_space *mapping, folio_wait_writeback(folio); truncate_inode_folio(mapping, folio); folio_unlock(folio); + index = folio_index(folio) + folio_nr_pages(folio) - 1; } truncate_exceptional_pvec_entries(mapping, &pvec, indices); pagevec_release(&pvec);
--
2.33.0