[PATCH] mm: relax policy for PG_readahead

[Minchan Kim]

This flag is in use for anon THP page so let's relax it.

Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx>
---
 include/linux/page-flags.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index e34a27727b9a..f12d4dfae580 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -318,8 +318,8 @@ PAGEFLAG(MappedToDisk, mappedtodisk, PF_NO_TAIL)
 /* PG_readahead is only used for reads; PG_reclaim is only for writes */
 PAGEFLAG(Reclaim, reclaim, PF_NO_TAIL)
 	TESTCLEARFLAG(Reclaim, reclaim, PF_NO_TAIL)
-PAGEFLAG(Readahead, reclaim, PF_NO_COMPOUND)
-	TESTCLEARFLAG(Readahead, reclaim, PF_NO_COMPOUND)
+PAGEFLAG(Readahead, reclaim, PF_NO_TAIL)
+	TESTCLEARFLAG(Readahead, reclaim, PF_NO_TAIL)
 
 #ifdef CONFIG_HIGHMEM
 /*
-- 
2.16.1.291.g4437f3f132-goog