Signed-off-by: Christoph Lameter <[EMAIL PROTECTED]>

---
 fs/ext3/dir.c   |    3 ++-
 fs/ext3/inode.c |   36 ++++++++++++++++++------------------
 2 files changed, 20 insertions(+), 19 deletions(-)

Index: linux-2.6.22-rc4-mm2/fs/ext3/dir.c
===================================================================
--- linux-2.6.22-rc4-mm2.orig/fs/ext3/dir.c     2007-06-15 17:35:33.000000000 
-0700
+++ linux-2.6.22-rc4-mm2/fs/ext3/dir.c  2007-06-18 18:59:38.000000000 -0700
@@ -137,7 +137,8 @@ static int ext3_readdir(struct file * fi
                                                &map_bh, 0, 0);
                if (err > 0) {
                        pgoff_t index = map_bh.b_blocknr >>
-                                       (PAGE_CACHE_SHIFT - inode->i_blkbits);
+                               (page_cache_shift(inode->i_mapping)
+                                       - inode->i_blkbits);
                        if (!ra_has_index(&filp->f_ra, index))
                                page_cache_readahead_ondemand(
                                        sb->s_bdev->bd_inode->i_mapping,
Index: linux-2.6.22-rc4-mm2/fs/ext3/inode.c
===================================================================
--- linux-2.6.22-rc4-mm2.orig/fs/ext3/inode.c   2007-06-18 18:42:45.000000000 
-0700
+++ linux-2.6.22-rc4-mm2/fs/ext3/inode.c        2007-06-18 18:59:38.000000000 
-0700
@@ -1159,8 +1159,8 @@ static int ext3_write_begin(struct file 
        pgoff_t index;
        unsigned from, to;
 
-       index = pos >> PAGE_CACHE_SHIFT;
-       from = pos & (PAGE_CACHE_SIZE - 1);
+       index = page_cache_index(mapping, pos);
+       from = page_cache_offset(mapping, pos);
        to = from + len;
 
 retry:
@@ -1233,7 +1233,7 @@ static int ext3_ordered_write_end(struct
        unsigned from, to;
        int ret = 0, ret2;
 
-       from = pos & (PAGE_CACHE_SIZE - 1);
+       from = page_cache_offset(mapping, pos);
        to = from + len;
 
        ret = walk_page_buffers(handle, page_buffers(page),
@@ -1300,7 +1300,7 @@ static int ext3_journalled_write_end(str
        int partial = 0;
        unsigned from, to;
 
-       from = pos & (PAGE_CACHE_SIZE - 1);
+       from = page_cache_offset(mapping, pos);
        to = from + len;
 
        if (copied < len) {
@@ -1462,6 +1462,7 @@ static int ext3_ordered_writepage(struct
        handle_t *handle = NULL;
        int ret = 0;
        int err;
+       int pagesize = page_cache_size(inode->i_mapping);
 
        J_ASSERT(PageLocked(page));
 
@@ -1484,8 +1485,7 @@ static int ext3_ordered_writepage(struct
                                (1 << BH_Dirty)|(1 << BH_Uptodate));
        }
        page_bufs = page_buffers(page);
-       walk_page_buffers(handle, page_bufs, 0,
-                       PAGE_CACHE_SIZE, NULL, bget_one);
+       walk_page_buffers(handle, page_bufs, 0, pagesize, NULL, bget_one);
 
        ret = block_write_full_page(page, ext3_get_block, wbc);
 
@@ -1502,13 +1502,12 @@ static int ext3_ordered_writepage(struct
         * and generally junk.
         */
        if (ret == 0) {
-               err = walk_page_buffers(handle, page_bufs, 0, PAGE_CACHE_SIZE,
-                                       NULL, journal_dirty_data_fn);
+               err = walk_page_buffers(handle, page_bufs, 0, pagesize,
+                       NULL, journal_dirty_data_fn);
                if (!ret)
                        ret = err;
        }
-       walk_page_buffers(handle, page_bufs, 0,
-                       PAGE_CACHE_SIZE, NULL, bput_one);
+       walk_page_buffers(handle, page_bufs, 0, pagesize, NULL, bput_one);
        err = ext3_journal_stop(handle);
        if (!ret)
                ret = err;
@@ -1560,6 +1559,7 @@ static int ext3_journalled_writepage(str
        handle_t *handle = NULL;
        int ret = 0;
        int err;
+       int pagesize = page_cache_size(inode->i_mapping);
 
        if (ext3_journal_current_handle())
                goto no_write;
@@ -1576,17 +1576,16 @@ static int ext3_journalled_writepage(str
                 * doesn't seem much point in redirtying the page here.
                 */
                ClearPageChecked(page);
-               ret = block_prepare_write(page, 0, PAGE_CACHE_SIZE,
-                                       ext3_get_block);
+               ret = block_prepare_write(page, 0, pagesize, ext3_get_block);
                if (ret != 0) {
                        ext3_journal_stop(handle);
                        goto out_unlock;
                }
                ret = walk_page_buffers(handle, page_buffers(page), 0,
-                       PAGE_CACHE_SIZE, NULL, do_journal_get_write_access);
+                       pagesize, NULL, do_journal_get_write_access);
 
                err = walk_page_buffers(handle, page_buffers(page), 0,
-                               PAGE_CACHE_SIZE, NULL, write_end_fn);
+                               pagesize, NULL, write_end_fn);
                if (ret == 0)
                        ret = err;
                EXT3_I(inode)->i_state |= EXT3_STATE_JDATA;
@@ -1801,8 +1800,8 @@ void ext3_set_aops(struct inode *inode)
 static int ext3_block_truncate_page(handle_t *handle, struct page *page,
                struct address_space *mapping, loff_t from)
 {
-       ext3_fsblk_t index = from >> PAGE_CACHE_SHIFT;
-       unsigned offset = from & (PAGE_CACHE_SIZE-1);
+       ext3_fsblk_t index = page_cache_index(mapping, from);
+       unsigned offset = page_cache_offset(mapping, from);
        unsigned blocksize, iblock, length, pos;
        struct inode *inode = mapping->host;
        struct buffer_head *bh;
@@ -1810,7 +1809,8 @@ static int ext3_block_truncate_page(hand
 
        blocksize = inode->i_sb->s_blocksize;
        length = blocksize - (offset & (blocksize - 1));
-       iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
+       iblock = index <<
+               (page_cache_shift(mapping) - inode->i_sb->s_blocksize_bits);
 
        /*
         * For "nobh" option,  we can only work if we don't need to
@@ -2289,7 +2289,7 @@ void ext3_truncate(struct inode *inode)
                page = NULL;
        } else {
                page = grab_cache_page(mapping,
-                               inode->i_size >> PAGE_CACHE_SHIFT);
+                               page_cache_index(mapping, inode->i_size));
                if (!page)
                        return;
        }

-- 
-
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