From 1cb2d38cb3e59d58e8321a0592e84b5761afb063 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Mon, 4 Apr 2011 12:53:28 +0900 Subject: 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 --- fs/nilfs2/page.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'fs/nilfs2/page.h') 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 *); -- cgit v1.2.3