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/segment.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'fs/nilfs2/segment.h') diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h index 6c02a86745fb..38a1d0013314 100644 --- a/fs/nilfs2/segment.h +++ b/fs/nilfs2/segment.h @@ -92,7 +92,6 @@ struct nilfs_segsum_pointer { * @sc_nblk_inc: Block count of current generation * @sc_dirty_files: List of files to be written * @sc_gc_inodes: List of GC inodes having blocks to be written - * @sc_copied_buffers: List of copied buffers (buffer heads) to freeze data * @sc_freesegs: array of segment numbers to be freed * @sc_nfreesegs: number of segments on @sc_freesegs * @sc_dsync_inode: inode whose data pages are written for a sync operation @@ -136,7 +135,6 @@ struct nilfs_sc_info { struct list_head sc_dirty_files; struct list_head sc_gc_inodes; - struct list_head sc_copied_buffers; __u64 *sc_freesegs; size_t sc_nfreesegs; -- cgit v1.2.3