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Btrfs: use plain page_address() in header fields setget functions

PATCH New Li Zefan 1 participant 1 message Aug 3, 2011 Btrfs file system

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Li Zefan

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PATCH 1/1 Btrfs: use plain page_address() in header fields setget functions

We've stopped using highmem for extent buffers.

Signed-off-by Li Zefan <[email protected]>
---
 fs/btrfs/ctree.h |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
fs/btrfs/ctree.h +2 -4
index 365c4e1..746e6b4 100644
@@ -1415,17 +1415,15 @@ void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val);
 #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits)		\
 static inline u##bits btrfs_##name(struct extent_buffer *eb)		\
 {									\
-	type *p = kmap_atomic(eb->first_page, KM_USER0);		\
+	type *p = page_address(eb->first_page);				\
 	u##bits res = le##bits##_to_cpu(p->member);			\
-	kunmap_atomic(p, KM_USER0);					\
 	return res;							\
 }									\
 static inline void btrfs_set_##name(struct extent_buffer *eb,		\
 				    u##bits val)			\
 {									\
-	type *p = kmap_atomic(eb->first_page, KM_USER0);		\
+	type *p = page_address(eb->first_page);				\
 	p->member = cpu_to_le##bits(val);				\
-	kunmap_atomic(p, KM_USER0);					\
 }
 
 #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits)		\
Signature · 1 line
1.7.3.1