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-rw-r--r--fs/dax.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/dax.c b/fs/dax.c
index 27ba300660ff..f757cd0e2d07 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1333,7 +1333,7 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
* this is a reliable test.
*/
pgoff = linear_page_index(vma, pmd_addr);
- max_pgoff = (i_size_read(inode) - 1) >> PAGE_SHIFT;
+ max_pgoff = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
trace_dax_pmd_fault(inode, vmf, max_pgoff, 0);
@@ -1357,13 +1357,13 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, pfn_t *pfnp,
if ((pmd_addr + PMD_SIZE) > vma->vm_end)
goto fallback;
- if (pgoff > max_pgoff) {
+ if (pgoff >= max_pgoff) {
result = VM_FAULT_SIGBUS;
goto out;
}
/* If the PMD would extend beyond the file size */
- if ((pgoff | PG_PMD_COLOUR) > max_pgoff)
+ if ((pgoff | PG_PMD_COLOUR) >= max_pgoff)
goto fallback;
/*