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mm/writeback: Add folio_account_redirty()

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Account the number of pages in the folio that we're redirtying.
Turn account_page_dirty() into a wrapper around it.  Also turn
the comment on folio_account_redirty() into kernel-doc and
edit it slightly so it makes sense to its potential callers.

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>
This commit is contained in:
Matthew Wilcox (Oracle)
2021-05-03 10:06:55 -04:00
parent 9350f20a07
commit 25ff8b1553
2 changed files with 24 additions and 14 deletions
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6
include/linux/writeback.h
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@@ -394,7 +394,11 @@ void tag_pages_for_writeback(struct address_space *mapping,
pgoff_t start, pgoff_t end);
bool filemap_dirty_folio(struct address_space *mapping, struct folio *folio);
void account_page_redirty(struct page *page);
void folio_account_redirty(struct folio *folio);
static inline void account_page_redirty(struct page *page)
{
folio_account_redirty(page_folio(page));
}
void sb_mark_inode_writeback(struct inode *inode);
void sb_clear_inode_writeback(struct inode *inode);