55f5d976
author Robin Dong <sanbai@taobao.com> 1348906067 -0600
committer Chris Mason <chris.mason@fusionio.com> 1349788543 -0400

btrfs: move inline function code to header file

When building btrfs from kernel code, it will report:

	fs/btrfs/extent_io.h:281: warning: 'extent_buffer_page' declared inline after being called
	fs/btrfs/extent_io.h:281: warning: previous declaration of 'extent_buffer_page' was here
	fs/btrfs/extent_io.h:280: warning: 'num_extent_pages' declared inline after being called
	fs/btrfs/extent_io.h:280: warning: previous declaration of 'num_extent_pages' was here

because of the wrong declaration of inline functions.

Signed-off-by: Robin Dong <sanbai@taobao.com>
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