| From | "Kirill A. Shutemov" <> | Subject | [PATCHv4 16/43] filemap: handle huge pages in filemap_fdatawait_range() | Date | Tue, 25 Oct 2016 03:13:15 +0300 |
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We writeback whole huge page a time.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> --- mm/filemap.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/mm/filemap.c b/mm/filemap.c index 954720092cf8..ecf5c2dba3fb 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -509,9 +509,14 @@ static int __filemap_fdatawait_range(struct address_space *mapping, if (page->index > end) continue; + page = compound_head(page); wait_on_page_writeback(page); if (TestClearPageError(page)) ret = -EIO; + if (PageTransHuge(page)) { + index = page->index + HPAGE_PMD_NR; + i += index - pvec.pages[i]->index - 1; + } } pagevec_release(&pvec); cond_resched(); -- 2.9.3
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