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mm/readahead: Convert page_cache_async_readahead to take a folio

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Removes a couple of calls to compound_head and saves a few bytes.
Also convert verity's read_file_data_page() to be folio-based.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Matthew Wilcox (Oracle)
2021-03-17 22:38:26 -04:00
parent 520f301c54
commit 2ebdd1df31
4 changed files with 22 additions and 21 deletions
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6
include/linux/pagemap.h
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@@ -1242,7 +1242,7 @@ void page_cache_sync_readahead(struct address_space *mapping,
* @mapping: address_space which holds the pagecache and I/O vectors
* @ra: file_ra_state which holds the readahead state
* @file: Used by the filesystem for authentication.
* @page: The page at @index which triggered the readahead call.
* @folio: The folio at @index which triggered the readahead call.
* @index: Index of first page to be read.
* @req_count: Total number of pages being read by the caller.
*
@@ -1254,10 +1254,10 @@ void page_cache_sync_readahead(struct address_space *mapping,
static inline
void page_cache_async_readahead(struct address_space *mapping,
struct file_ra_state *ra, struct file *file,
struct page *page, pgoff_t index, unsigned long req_count)
struct folio *folio, pgoff_t index, unsigned long req_count)
{
DEFINE_READAHEAD(ractl, file, ra, mapping, index);
page_cache_async_ra(&ractl, page_folio(page), req_count);
page_cache_async_ra(&ractl, folio, req_count);
}
static inline struct folio *__readahead_folio(struct readahead_control *ractl)