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authorDavid Howells <dhowells@redhat.com>2008-02-21 16:12:45 +0000
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-21 16:40:15 -0800
commita62f735cbb1a0937ab6a9196dadf752694ef0b7f (patch)
tree4526f9b2a94550784c0005dbb239ef95db41a3c1 /include/linux/page-flags.h
parent5e45bb2ebac937f2eb62138b5d734f3ac7ce8e2f (diff)
MM: Fix macro argument substitution in PageHead() and PageTail()
Fix macro argument substitution in PageHead() and PageTail() - 'page' should have brackets surrounding it (commit 6d7779538f765963ced45a3fa4bed7ba8d2c277d). Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/page-flags.h')
-rw-r--r--include/linux/page-flags.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index bbad43fb818..b5b30f1c1e5 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -266,7 +266,7 @@ static inline void SetPageUptodate(struct page *page)
#define PG_head_tail_mask ((1L << PG_compound) | (1L << PG_reclaim))
-#define PageTail(page) ((page->flags & PG_head_tail_mask) \
+#define PageTail(page) (((page)->flags & PG_head_tail_mask) \
== PG_head_tail_mask)
static inline void __SetPageTail(struct page *page)
@@ -279,7 +279,7 @@ static inline void __ClearPageTail(struct page *page)
page->flags &= ~PG_head_tail_mask;
}
-#define PageHead(page) ((page->flags & PG_head_tail_mask) \
+#define PageHead(page) (((page)->flags & PG_head_tail_mask) \
== (1L << PG_compound))
#define __SetPageHead(page) __SetPageCompound(page)
#define __ClearPageHead(page) __ClearPageCompound(page)