Commit 8306a5f5 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle)
Browse files

iomap: Add iomap_invalidate_folio 



Keep iomap_invalidatepage around as a wrapper for use in address_space
operations.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarDarrick J. Wong <djwong@kernel.org>
parent 39f16c83

fs/iomap/buffered-io.c

+12 −8
Original line number Diff line number Diff line
@@ -479,23 +479,27 @@ iomap_releasepage(struct page *page, gfp_t gfp_mask) 
}

EXPORT_SYMBOL_GPL(iomap_releasepage);



void

iomap_invalidatepage(struct page *page, unsigned int offset, unsigned int len)

void iomap_invalidate_folio(struct folio *folio, size_t offset, size_t len)

{

	struct folio *folio = page_folio(page);



	trace_iomap_invalidatepage(page->mapping->host, offset, len);

	trace_iomap_invalidatepage(folio->mapping->host, offset, len);



	/*

	 * If we're invalidating the entire page, clear the dirty state from it

	 * and release it to avoid unnecessary buildup of the LRU.

	 */

	if (offset == 0 && len == PAGE_SIZE) {

		WARN_ON_ONCE(PageWriteback(page));

		cancel_dirty_page(page);

	if (offset == 0 && len == folio_size(folio)) {

		WARN_ON_ONCE(folio_test_writeback(folio));

		folio_cancel_dirty(folio);

		iomap_page_release(folio);

	}

}

EXPORT_SYMBOL_GPL(iomap_invalidate_folio);



void iomap_invalidatepage(struct page *page, unsigned int offset,

		unsigned int len)

{

	iomap_invalidate_folio(page_folio(page), offset, len);

}

EXPORT_SYMBOL_GPL(iomap_invalidatepage);



#ifdef CONFIG_MIGRATION

include/linux/iomap.h

+1 −0
Original line number Diff line number Diff line
@@ -225,6 +225,7 @@ void iomap_readahead(struct readahead_control *, const struct iomap_ops *ops); 
int iomap_is_partially_uptodate(struct page *page, unsigned long from,

		unsigned long count);

int iomap_releasepage(struct page *page, gfp_t gfp_mask);

void iomap_invalidate_folio(struct folio *folio, size_t offset, size_t len);

void iomap_invalidatepage(struct page *page, unsigned int offset,

		unsigned int len);

#ifdef CONFIG_MIGRATION