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filemap: convert filemap_range_has_writeback() to use folios 

Removes 3 calls to compound_head().

Link: https://lkml.kernel.org/r/20220905214557.868606-1-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Vishal Moola (Oracle) 2022-09-05 14:45:57 -07:00 committed by Andrew Morton
parent 710bb68c2e
commit b05f41a1aa
1 changed files with 7 additions and 6 deletions
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13
mm/filemap.c
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@ -632,22 +632,23 @@ bool filemap_range_has_writeback(struct address_space *mapping,
{
XA_STATE(xas, &mapping->i_pages, start_byte >> PAGE_SHIFT);
pgoff_t max = end_byte >> PAGE_SHIFT;
struct page *page;
struct folio *folio;
if (end_byte < start_byte)
return false;
rcu_read_lock();
xas_for_each(&xas, page, max) {
if (xas_retry(&xas, page))
xas_for_each(&xas, folio, max) {
if (xas_retry(&xas, folio))
continue;
if (xa_is_value(page))
if (xa_is_value(folio))
continue;
if (PageDirty(page) || PageLocked(page) || PageWriteback(page))
if (folio_test_dirty(folio) || folio_test_locked(folio) ||
folio_test_writeback(folio))
break;
}
rcu_read_unlock();
return page != NULL;
return folio != NULL;
}
EXPORT_SYMBOL_GPL(filemap_range_has_writeback);