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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-04-04 12:53:28 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-05-10 22:21:44 +0900
commit1cb2d38cb3e59d58e8321a0592e84b5761afb063 (patch)
tree151e7ffccd72f786a3da511b0f23906961835a22 /include/linux/nilfs2_fs.h
parenteaae0f37d83bed7ccd0c6d0f52de1de44f92aecc (diff)
nilfs2: get rid of private page allocator
Previously, nilfs was cloning pages for mmapped region to freeze their data and ensure consistency of checksum during writeback cycles. A private page allocator was used for this page cloning. But, we no longer need to do that since clear_page_dirty_for_io function sets up pte so that vm_ops->page_mkwrite function is called right before the mmapped pages are modified and nilfs_page_mkwrite function can safely wait for the pages to be written back to disk. So, this stops making a copy of mmapped pages during writeback, and eliminates the private page allocation and deallocation functions from nilfs. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'include/linux/nilfs2_fs.h')
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