On Wed, Nov 28, 2007 at 07:28:17PM -0800, Christoph Lameter wrote:
> In other words the following patch?
> Index: mm/fs/xfs/linux-2.6/xfs_aops.c
> ===================================================================
> --- mm.orig/fs/xfs/linux-2.6/xfs_aops.c 2007-11-28 19:13:13.323382722
> -0800
> +++ mm/fs/xfs/linux-2.6/xfs_aops.c 2007-11-28 19:22:15.686920219 -0800
> @@ -75,7 +75,7 @@ xfs_page_trace(
> xfs_inode_t *ip;
> bhv_vnode_t *vp = vn_from_inode(inode);
> loff_t isize = i_size_read(inode);
> - loff_t offset = page_cache_offset(page->mapping);
> + loff_t offset = page_cache_pos(page->mapping, page->index, 0);
> int delalloc = -1, unmapped = -1, unwritten = -1;
>
> if (page_has_buffers(page))
Good.
> @@ -780,13 +780,11 @@ xfs_convert_page(
> * count of buffers on the page.
> */
> end_offset = min_t(unsigned long long,
> - (xfs_off_t)(page->index + 1) << page_cache_shift(map),
> + (xfs_off_t)page_cache_pos(map, page->index + 1, 0),
> i_size_read(inode));
>
> len = 1 << inode->i_blkbits;
> - p_offset = min_t(unsigned long, page_cache_offset(map, end_offset),
> - page_cache_size(map));
> - p_offset = p_offset ? roundup(p_offset, len) : page_cache_size(map);
> + p_offset = page_cache_offset(map, end_offset);
No, still need the roundup. i.e.:
- p_offset = min_t(unsigned long, page_cache_offset(map, end_offset),
- page_cache_size(map));
+ p_offset = page_cache_offset(map, end_offset);
p_offset = p_offset ? roundup(p_offset, len) : page_cache_size(map);
> page_dirty = p_offset / len;
>
> bh = head = page_buffers(page);
> @@ -943,7 +941,6 @@ xfs_page_state_convert(
> int trylock = 0;
> int all_bh = unmapped;
> struct address_space *map = inode->i_mapping;
> - int pagesize = page_cache_size(map);
>
> if (startio) {
> if (wbc->sync_mode == WB_SYNC_NONE && wbc->nonblocking)
> @@ -979,9 +976,7 @@ xfs_page_state_convert(
> end_offset = min_t(unsigned long long,
> (xfs_off_t)page_cache_pos(map, page->index + 1, 0),
> offset);
> len = 1 << inode->i_blkbits;
> - p_offset = min_t(unsigned long, page_cache_offset(map, end_offset),
> - pagesize);
> - p_offset = p_offset ? roundup(p_offset, len) : pagesize;
> + p_offset = page_cache_offset(map, end_offset);
And still need the roundup here as well.
> page_dirty = p_offset / len;
>
> bh = head = page_buffers(page);
> @@ -1132,8 +1127,8 @@ xfs_page_state_convert(
> xfs_start_page_writeback(page, wbc, 1, count);
>
> if (ioend && iomap_valid) {
> - offset = (iomap.iomap_offset + iomap.iomap_bsize - 1) >>
> - page_cache_shift(map);
> + offset = page_cache_index(map,
> + (iomap.iomap_offset + iomap.iomap_bsize - 1));
Good.
> tlast = min_t(pgoff_t, offset, last_index);
> xfs_cluster_write(inode, page->index + 1, &iomap, &ioend,
> wbc, startio, all_bh, tlast);
> Index: mm/fs/xfs/linux-2.6/xfs_lrw.c
> ===================================================================
> --- mm.orig/fs/xfs/linux-2.6/xfs_lrw.c 2007-11-28 19:22:35.454383115
> -0800
> +++ mm/fs/xfs/linux-2.6/xfs_lrw.c 2007-11-28 19:22:59.222132796 -0800
> @@ -142,7 +142,7 @@ xfs_iozero(
> unsigned offset, bytes;
> void *fsdata;
>
> - offset = page_cache_offset(mapping, pos); /* Within page */
> + offset = page_cache_offset(mapping, pos);
Ok.
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
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