From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
In preparation for removing kmap from directory handling, mask
the directory entry pointer to discover the start address of the
page. Matches ext2.
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxx>
---
fs/nilfs2/dir.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c
index 73f135290288..385e47eda99f 100644
--- a/fs/nilfs2/dir.c
+++ b/fs/nilfs2/dir.c
@@ -531,7 +531,7 @@ int nilfs_delete_entry(struct nilfs_dir_entry *dir, struct page *page)
{
struct address_space *mapping = page->mapping;
struct inode *inode = mapping->host;
- char *kaddr = page_address(page);
+ char *kaddr = (char *)((unsigned long)dir & PAGE_MASK);
unsigned int from, to;
struct nilfs_dir_entry *de, *pde = NULL;
int err;
@@ -551,7 +551,7 @@ int nilfs_delete_entry(struct nilfs_dir_entry *dir, struct page *page)
de = nilfs_next_entry(de);
}
if (pde)
- from = (char *)pde - (char *)page_address(page);
+ from = (char *)pde - kaddr;
lock_page(page);
err = nilfs_prepare_chunk(page, from, to);
BUG_ON(err);
--
2.34.1
