diff options
| -rw-r--r-- | include/linux/pagemap.h | 1 | ||||
| -rw-r--r-- | mm/truncate.c | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 2df35e65557d..f879c1d54da7 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -207,6 +207,7 @@ enum mapping_flags { AS_STABLE_WRITES, /* must wait for writeback before modifying folio contents */ AS_UNMOVABLE, /* The mapping cannot be moved, ever */ + AS_INACCESSIBLE, /* Do not attempt direct R/W access to the mapping */ }; /** diff --git a/mm/truncate.c b/mm/truncate.c index 725b150e47ac..c501338c7ebd 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -233,7 +233,8 @@ bool truncate_inode_partial_folio(struct folio *folio, loff_t start, loff_t end) * doing a complex calculation here, and then doing the zeroing * anyway if the page split fails. */ - folio_zero_range(folio, offset, length); + if (!(folio->mapping->flags & AS_INACCESSIBLE)) + folio_zero_range(folio, offset, length); if (folio_has_private(folio)) folio_invalidate(folio, offset, length); |