f143f1ea5a
Rename set_page_writeback() to folio_start_writeback() to match folio_end_writeback(). Do not bother with wrappers that return void; callers are perfectly capable of ignoring return values. Add wrappers for set_page_writeback(), set_page_writeback_keepwrite() and test_set_page_writeback() for compatibililty with existing filesystems. The main advantage of this patch is getting the statistics right, although it does eliminate a couple of calls to compound_head(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: David Howells <dhowells@redhat.com> Acked-by: Vlastimil Babka <vbabka@suse.cz>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/*
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* Compatibility functions which bloat the callers too much to make inline.
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* All of the callers of these functions should be converted to use folios
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* eventually.
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*/
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#include <linux/migrate.h>
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#include <linux/pagemap.h>
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#include <linux/swap.h>
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struct address_space *page_mapping(struct page *page)
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{
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return folio_mapping(page_folio(page));
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}
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EXPORT_SYMBOL(page_mapping);
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void unlock_page(struct page *page)
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{
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return folio_unlock(page_folio(page));
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}
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EXPORT_SYMBOL(unlock_page);
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void end_page_writeback(struct page *page)
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{
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return folio_end_writeback(page_folio(page));
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}
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EXPORT_SYMBOL(end_page_writeback);
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void wait_on_page_writeback(struct page *page)
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{
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return folio_wait_writeback(page_folio(page));
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}
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EXPORT_SYMBOL_GPL(wait_on_page_writeback);
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void wait_for_stable_page(struct page *page)
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{
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return folio_wait_stable(page_folio(page));
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}
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EXPORT_SYMBOL_GPL(wait_for_stable_page);
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bool page_mapped(struct page *page)
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{
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return folio_mapped(page_folio(page));
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}
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EXPORT_SYMBOL(page_mapped);
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void mark_page_accessed(struct page *page)
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{
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folio_mark_accessed(page_folio(page));
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}
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EXPORT_SYMBOL(mark_page_accessed);
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#ifdef CONFIG_MIGRATION
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int migrate_page_move_mapping(struct address_space *mapping,
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struct page *newpage, struct page *page, int extra_count)
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{
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return folio_migrate_mapping(mapping, page_folio(newpage),
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page_folio(page), extra_count);
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}
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EXPORT_SYMBOL(migrate_page_move_mapping);
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void migrate_page_states(struct page *newpage, struct page *page)
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{
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folio_migrate_flags(page_folio(newpage), page_folio(page));
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}
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EXPORT_SYMBOL(migrate_page_states);
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void migrate_page_copy(struct page *newpage, struct page *page)
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{
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folio_migrate_copy(page_folio(newpage), page_folio(page));
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}
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EXPORT_SYMBOL(migrate_page_copy);
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#endif
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bool set_page_writeback(struct page *page)
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{
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return folio_start_writeback(page_folio(page));
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}
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EXPORT_SYMBOL(set_page_writeback);
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