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: Richard Weinberger <richard@xxxxxx>
---
fs/ubifs/file.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 743928efffc1..395ff2081ecb 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1559,8 +1559,7 @@ static vm_fault_t ubifs_vm_page_mkwrite(struct vm_fault *vmf)
}
lock_page(page);
- if (unlikely(page->mapping != inode->i_mapping ||
- page_offset(page) > i_size_read(inode))) {
+ if (unlikely(page_mkwrite_check_truncate(page, inode) < 0)) {
/* Page got truncated out from underneath us */
goto sigbus;
}
--
2.24.1
