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

We've stopped using highmem for extent buffers.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Li Zefan 2011-08-03 08:11:41 +00:00 committed by Chris Mason
parent cb1b69f450
commit c97c2916e2
1 changed files with 2 additions and 4 deletions
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6
fs/btrfs/ctree.h
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@ -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) \ #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
static inline u##bits btrfs_##name(struct extent_buffer *eb) \ 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); \ u##bits res = le##bits##_to_cpu(p->member); \
kunmap_atomic(p, KM_USER0); \
return res; \ return res; \
} \ } \
static inline void btrfs_set_##name(struct extent_buffer *eb, \ static inline void btrfs_set_##name(struct extent_buffer *eb, \
u##bits val) \ 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); \ p->member = cpu_to_le##bits(val); \
kunmap_atomic(p, KM_USER0); \
} }
#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \