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iomap: Add iomap_invalidate_folio 

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

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-04-28 07:51:36 -04:00
parent 39f16c8345
commit 8306a5f563
2 changed files with 13 additions and 8 deletions
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20
fs/iomap/buffered-io.c
View File

@ -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

1
include/linux/iomap.h
View File

@ -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