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author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-04-04 12:53:28 +0900 |
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committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-05-10 22:21:44 +0900 |
commit | 1cb2d38cb3e59d58e8321a0592e84b5761afb063 (patch) | |
tree | 151e7ffccd72f786a3da511b0f23906961835a22 /fs/dlm/rcom.c | |
parent | eaae0f37d83bed7ccd0c6d0f52de1de44f92aecc (diff) | |
download | op-kernel-dev-1cb2d38cb3e59d58e8321a0592e84b5761afb063.zip op-kernel-dev-1cb2d38cb3e59d58e8321a0592e84b5761afb063.tar.gz |
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 'fs/dlm/rcom.c')
0 files changed, 0 insertions, 0 deletions