page-flags: relax policy for PG_mappedtodisk and PG_reclaim

These flags are in use for file THP.

Link: http://lkml.kernel.org/r/1466021202-61880-23-git-send-email-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 8cf0963..74e4dda 100644 (file)
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -295,11 +295,11 @@ PAGEFLAG(OwnerPriv1, owner_priv_1, PF_ANY)
  */
 TESTPAGEFLAG(Writeback, writeback, PF_NO_COMPOUND)
        TESTSCFLAG(Writeback, writeback, PF_NO_COMPOUND)
-PAGEFLAG(MappedToDisk, mappedtodisk, PF_NO_COMPOUND)
+PAGEFLAG(MappedToDisk, mappedtodisk, PF_NO_TAIL)
 
 /* PG_readahead is only used for reads; PG_reclaim is only for writes */
-PAGEFLAG(Reclaim, reclaim, PF_NO_COMPOUND)
-       TESTCLEARFLAG(Reclaim, reclaim, PF_NO_COMPOUND)
+PAGEFLAG(Reclaim, reclaim, PF_NO_TAIL)
+       TESTCLEARFLAG(Reclaim, reclaim, PF_NO_TAIL)
 PAGEFLAG(Readahead, reclaim, PF_NO_COMPOUND)
        TESTCLEARFLAG(Readahead, reclaim, PF_NO_COMPOUND)