diff options
| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-04-04 07:53:28 +0400 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-05-10 17:21:44 +0400 |
| commit | 1cb2d38cb3e59d58e8321a0592e84b5761afb063 (patch) | |
| tree | 151e7ffccd72f786a3da511b0f23906961835a22 /fs/nilfs2/page.h | |
| parent | eaae0f37d83bed7ccd0c6d0f52de1de44f92aecc (diff) | |
| download | linux-1cb2d38cb3e59d58e8321a0592e84b5761afb063.tar.xz | |
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/nilfs2/page.h')
| -rw-r--r-- | fs/nilfs2/page.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/fs/nilfs2/page.h b/fs/nilfs2/page.h index f06b79ad7493..f827afabd548 100644 --- a/fs/nilfs2/page.h +++ b/fs/nilfs2/page.h @@ -38,7 +38,6 @@ enum { BH_NILFS_Redirected, }; -BUFFER_FNS(NILFS_Allocated, nilfs_allocated) /* nilfs private buffers */ BUFFER_FNS(NILFS_Node, nilfs_node) /* nilfs node buffers */ BUFFER_FNS(NILFS_Volatile, nilfs_volatile) BUFFER_FNS(NILFS_Checked, nilfs_checked) /* buffer is verified */ @@ -54,9 +53,6 @@ void nilfs_forget_buffer(struct buffer_head *); void nilfs_copy_buffer(struct buffer_head *, struct buffer_head *); int nilfs_page_buffers_clean(struct page *); void nilfs_page_bug(struct page *); -struct page *nilfs_alloc_private_page(struct block_device *, int, - unsigned long); -void nilfs_free_private_page(struct page *); int nilfs_copy_dirty_pages(struct address_space *, struct address_space *); void nilfs_copy_back_pages(struct address_space *, struct address_space *); |