Take a folio instead of a page, fix the types of the offset & length,
and export it to filesystems.
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
include/linux/mm.h | 3 ---
include/linux/pagemap.h | 1 +
mm/truncate.c | 20 ++++++++++----------
3 files changed, 11 insertions(+), 13 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 213cc569b192..7808a7959066 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1939,9 +1939,6 @@ int get_kernel_pages(const struct kvec *iov, int nr_pages, int write,
struct page **pages);
struct page *get_dump_page(unsigned long addr);
-extern void do_invalidatepage(struct page *page, unsigned int offset,
- unsigned int length);
-
bool folio_mark_dirty(struct folio *folio);
bool set_page_dirty(struct page *page);
int set_page_dirty_lock(struct page *page);
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 2a4a46ff890c..469b7c4eeeed 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -891,6 +891,7 @@ static inline void cancel_dirty_page(struct page *page)
}
bool folio_clear_dirty_for_io(struct folio *folio);
bool clear_page_dirty_for_io(struct page *page);
+void folio_invalidate(struct folio *folio, size_t offset, size_t length);
int __must_check folio_write_one(struct folio *folio);
static inline int __must_check write_one_page(struct page *page)
{
diff --git a/mm/truncate.c b/mm/truncate.c
index 9dbf0b75da5d..aa0ed373789d 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -138,33 +138,33 @@ static int invalidate_exceptional_entry2(struct address_space *mapping,
}
/**
- * do_invalidatepage - invalidate part or all of a page
- * @page: the page which is affected
+ * folio_invalidate - Invalidate part or all of a folio.
+ * @folio: The folio which is affected.
* @offset: start of the range to invalidate
* @length: length of the range to invalidate
*
- * do_invalidatepage() is called when all or part of the page has become
+ * folio_invalidate() is called when all or part of the folio has become
* invalidated by a truncate operation.
*
- * do_invalidatepage() does not have to release all buffers, but it must
+ * folio_invalidate() does not have to release all buffers, but it must
* ensure that no dirty buffer is left outside @offset and that no I/O
* is underway against any of the blocks which are outside the truncation
* point. Because the caller is about to free (and possibly reuse) those
* blocks on-disk.
*/
-void do_invalidatepage(struct page *page, unsigned int offset,
- unsigned int length)
+void folio_invalidate(struct folio *folio, size_t offset, size_t length)
{
void (*invalidatepage)(struct page *, unsigned int, unsigned int);
- invalidatepage = page->mapping->a_ops->invalidatepage;
+ invalidatepage = folio->mapping->a_ops->invalidatepage;
#ifdef CONFIG_BLOCK
if (!invalidatepage)
invalidatepage = block_invalidatepage;
#endif
if (invalidatepage)
- (*invalidatepage)(page, offset, length);
+ (*invalidatepage)(&folio->page, offset, length);
}
+EXPORT_SYMBOL_GPL(folio_invalidate);
/*
* If truncate cannot remove the fs-private metadata from the page, the page
@@ -182,7 +182,7 @@ static void truncate_cleanup_folio(struct folio *folio)
unmap_mapping_folio(folio);
if (folio_has_private(folio))
- do_invalidatepage(&folio->page, 0, folio_size(folio));
+ folio_invalidate(folio, 0, folio_size(folio));
/*
* Some filesystems seem to re-dirty the page even after
@@ -264,7 +264,7 @@ bool truncate_inode_partial_folio(struct folio *folio, loff_t start, loff_t end)
folio_zero_range(folio, offset, length);
if (folio_has_private(folio))
- do_invalidatepage(&folio->page, offset, length);
+ folio_invalidate(folio, offset, length);
if (!folio_test_large(folio))
return true;
if (split_huge_page(&folio->page) == 0)
--
2.34.1
