1 files changed, 15 insertions, 0 deletions

diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index d3634bfb7fe1..863250157aa7 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -35,6 +35,7 @@
 #include <linux/elf-fdpic.h>
 #include <linux/elfcore.h>
 #include <linux/coredump.h>
+#include <linux/dax.h>
 
 #include <asm/uaccess.h>
 #include <asm/param.h>
@@ -1206,6 +1207,20 @@ static int maydump(struct vm_area_struct *vma, unsigned long mm_flags)
                 return 0;
         }
 
+        /* support for DAX */
+        if (vma_is_dax(vma)) {
+                if (vma->vm_flags & VM_SHARED) {
+                        dump_ok = test_bit(MMF_DUMP_DAX_SHARED, &mm_flags);
+                        kdcore("%08lx: %08lx: %s (DAX shared)", vma->vm_start,
+                               vma->vm_flags, dump_ok ? "yes" : "no");
+                } else {
+                        dump_ok = test_bit(MMF_DUMP_DAX_PRIVATE, &mm_flags);
+                        kdcore("%08lx: %08lx: %s (DAX private)", vma->vm_start,
+                               vma->vm_flags, dump_ok ? "yes" : "no");
+                }
+                return dump_ok;
+        }
+
         /* By default, dump shared memory if mapped from an anonymous file. */
         if (vma->vm_flags & VM_SHARED) {
                 if (file_inode(vma->vm_file)->i_nlink == 0) {