Use the "page has been truncated" logic in page_mkwrite_check_truncate
instead of reimplementing it here. Other than with the existing code,
fail with -EFAULT / VM_FAULT_NOPAGE when page_offset(page) == size here
as well, as should be expected.
Signed-off-by: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
Acked-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/ceph/addr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 7ab616601141..ef958aa4adb4 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -1575,7 +1575,7 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf)
do {
lock_page(page);
- if ((off > size) || (page->mapping != inode->i_mapping)) {
+ if (page_mkwrite_check_truncate(page, inode) < 0) {
unlock_page(page);
ret = VM_FAULT_NOPAGE;
break;
--
2.24.1
