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Subject[07/37] Use page_cache_xxx in mm/filemap_xip.c
Signed-off-by: Christoph Lameter <clameter@sgi.com>

---
mm/filemap_xip.c | 28 ++++++++++++++--------------
1 file changed, 14 insertions(+), 14 deletions(-)
Index: vps/mm/filemap_xip.c
===================================================================
--- vps.orig/mm/filemap_xip.c 2007-06-09 21:52:40.000000000 -0700
+++ vps/mm/filemap_xip.c 2007-06-09 21:58:11.000000000 -0700
@@ -60,24 +60,24 @@ do_xip_mapping_read(struct address_space

BUG_ON(!mapping->a_ops->get_xip_page);

- index = *ppos >> PAGE_CACHE_SHIFT;
- offset = *ppos & ~PAGE_CACHE_MASK;
+ index = page_cache_index(mapping, *ppos);
+ offset = page_cache_offset(mapping, *ppos);

isize = i_size_read(inode);
if (!isize)
goto out;

- end_index = (isize - 1) >> PAGE_CACHE_SHIFT;
+ end_index = page_cache_index(mapping, isize - 1);
for (;;) {
struct page *page;
unsigned long nr, ret;

/* nr is the maximum number of bytes to copy from this page */
- nr = PAGE_CACHE_SIZE;
+ nr = page_cache_size(mapping);
if (index >= end_index) {
if (index > end_index)
goto out;
- nr = ((isize - 1) & ~PAGE_CACHE_MASK) + 1;
+ nr = page_cache_next(mapping, size - 1) + 1;
if (nr <= offset) {
goto out;
}
@@ -116,8 +116,8 @@ do_xip_mapping_read(struct address_space
*/
ret = actor(desc, page, offset, nr);
offset += ret;
- index += offset >> PAGE_CACHE_SHIFT;
- offset &= ~PAGE_CACHE_MASK;
+ index += page_cache_index(mapping, offset);
+ offset = page_cache_offset(mapping, offset);

if (ret == nr && desc->count)
continue;
@@ -130,7 +130,7 @@ no_xip_page:
}

out:
- *ppos = ((loff_t) index << PAGE_CACHE_SHIFT) + offset;
+ *ppos = page_cache_pos(mapping, index, offset);
if (filp)
file_accessed(filp);
}
@@ -242,7 +242,7 @@ static struct page *xip_file_fault(struc

/* XXX: are VM_FAULT_ codes OK? */

- size = (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
+ size = page_cache_next(mapping, i_size_read(inode));
if (fdata->pgoff >= size) {
fdata->type = VM_FAULT_SIGBUS;
return NULL;
@@ -320,9 +320,9 @@ __xip_file_write(struct file *filp, cons
size_t copied;
char *kaddr;

- offset = (pos & (PAGE_CACHE_SIZE -1)); /* Within page */
- index = pos >> PAGE_CACHE_SHIFT;
- bytes = PAGE_CACHE_SIZE - offset;
+ offset = page_cache_offset(mapping, pos); /* Within page */
+ index = page_cache_index(mapping, pos);
+ bytes = page_cache_size(mapping) - offset;
if (bytes > count)
bytes = count;

@@ -433,8 +433,8 @@ EXPORT_SYMBOL_GPL(xip_file_write);
int
xip_truncate_page(struct address_space *mapping, loff_t from)
{
- pgoff_t index = from >> PAGE_CACHE_SHIFT;
- unsigned offset = from & (PAGE_CACHE_SIZE-1);
+ pgoff_t index = page_cache_index(mapping, from);
+ unsigned offset = page_cache_offset(mapping, from);
unsigned blocksize;
unsigned length;
struct page *page;
--
-
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