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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-04-04 05:53:28 +0200
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-05-10 15:21:44 +0200
commit1cb2d38cb3e59d58e8321a0592e84b5761afb063 (patch)
tree151e7ffccd72f786a3da511b0f23906961835a22 /fs/nilfs2/page.h
parentnilfs2: merge list_del()/list_add_tail() to list_move_tail() (diff)
downloadlinux-1cb2d38cb3e59d58e8321a0592e84b5761afb063.tar.xz
linux-1cb2d38cb3e59d58e8321a0592e84b5761afb063.zip
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.h4
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 *);