[PATCHv3 09/41] page-flags: relax page flag policy for few flags

From	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Newsgroups	linux.kernel
Subject	[PATCHv3 09/41] page-flags: relax page flag policy for few flags
Date	2016-09-15 14:20 +0200
Message-ID	<shDO3-6VP-39@gated-at.bofh.it> (permalink)
References	<shDuF-6vN-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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These flags are in use for filesystems with backing storage: PG_error,
PG_writeback and PG_readahead.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
 include/linux/page-flags.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 74e4dda91238..a2bef9a41bcf 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -253,7 +253,7 @@ static inline int TestClearPage##uname(struct page *page) { return 0; }
 	TESTSETFLAG_FALSE(uname) TESTCLEARFLAG_FALSE(uname)
 
 __PAGEFLAG(Locked, locked, PF_NO_TAIL)
-PAGEFLAG(Error, error, PF_NO_COMPOUND) TESTCLEARFLAG(Error, error, PF_NO_COMPOUND)
+PAGEFLAG(Error, error, PF_NO_TAIL) TESTCLEARFLAG(Error, error, PF_NO_TAIL)
 PAGEFLAG(Referenced, referenced, PF_HEAD)
 	TESTCLEARFLAG(Referenced, referenced, PF_HEAD)
 	__SETPAGEFLAG(Referenced, referenced, PF_HEAD)
@@ -293,15 +293,15 @@ PAGEFLAG(OwnerPriv1, owner_priv_1, PF_ANY)
  * Only test-and-set exist for PG_writeback.  The unconditional operators are
  * risky: they bypass page accounting.
  */
-TESTPAGEFLAG(Writeback, writeback, PF_NO_COMPOUND)
-	TESTSCFLAG(Writeback, writeback, PF_NO_COMPOUND)
+TESTPAGEFLAG(Writeback, writeback, PF_NO_TAIL)
+	TESTSCFLAG(Writeback, writeback, PF_NO_TAIL)
 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
 /*
-- 
2.9.3

Thread

[PATCHv3 00/41] ext4: support of huge pages "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-15 14:20 +0200
  [PATCHv3 03/41] radix-tree: Add radix_tree_join "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-15 14:20 +0200
  [PATCHv3 04/41] radix-tree: Add radix_tree_split "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-15 14:20 +0200
  [PATCHv3 10/41] mm, rmap: account file thp pages "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-15 14:20 +0200
  [PATCHv3 02/41] radix tree test suite: Allow GFP_ATOMIC allocations to fail "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-15 14:20 +0200
  [PATCHv3 07/41] mm, shmem: swich huge tmpfs to multi-order radix-tree entries "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-15 14:20 +0200
    Re: [PATCHv3 07/41] mm, shmem: swich huge tmpfs to multi-order  radix-tree entries "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-16 14:10 +0200
  [PATCHv3 19/41] block: define BIO_MAX_PAGES to HPAGE_PMD_NR if huge page cache enabled "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-15 14:20 +0200
    Re: [PATCHv3 19/41] block: define BIO_MAX_PAGES to HPAGE_PMD_NR if  huge page cache enabled "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-16 14:10 +0200
  [PATCHv3 09/41] page-flags: relax page flag policy for few flags "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-15 14:20 +0200
  [PATCHv3 01/41] tools: Add WARN_ON_ONCE "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-09-15 14:20 +0200

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