Signed-off-by: Christoph Lameter <[email protected]>
---
drivers/block/loop.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
Index: linux-2.6.22-rc4-mm2/drivers/block/loop.c
===================================================================
--- linux-2.6.22-rc4-mm2.orig/drivers/block/loop.c 2007-06-19 20:50:30.000000000 -0700
+++ linux-2.6.22-rc4-mm2/drivers/block/loop.c 2007-06-20 00:34:46.000000000 -0700
@@ -215,8 +215,8 @@ static int do_lo_send_aops(struct loop_d
int len, ret;
mutex_lock(&mapping->host->i_mutex);
- index = pos >> PAGE_CACHE_SHIFT;
- offset = pos & ((pgoff_t)PAGE_CACHE_SIZE - 1);
+ index = page_cache_index(mapping, pos);
+ offset = page_cache_offset(mapping, pos);
bv_offs = bvec->bv_offset;
len = bvec->bv_len;
while (len > 0) {
@@ -226,8 +226,9 @@ static int do_lo_send_aops(struct loop_d
struct page *page;
void *fsdata;
- IV = ((sector_t)index << (PAGE_CACHE_SHIFT - 9))+(offset >> 9);
- size = PAGE_CACHE_SIZE - offset;
+ IV = ((sector_t)index << (page_cache_shift(mapping) - 9))
+ + (offset >> 9);
+ size = page_cache_size(mapping) - offset;
if (size > len)
size = len;
@@ -393,7 +394,9 @@ lo_read_actor(read_descriptor_t *desc, s
struct loop_device *lo = p->lo;
sector_t IV;
- IV = ((sector_t) page->index << (PAGE_CACHE_SHIFT - 9))+(offset >> 9);
+ IV = ((sector_t) page->index <<
+ (page_cache_shift(page_mapping(page)) - 9))
+ + (offset >> 9);
if (size > count)
size = count;
--
-
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