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-rw-r--r--Documentation/filesystems/dax.txt7
1 files changed, 4 insertions, 3 deletions
diff --git a/Documentation/filesystems/dax.txt b/Documentation/filesystems/dax.txt
index 7af2851d667c..7bde64014a89 100644
--- a/Documentation/filesystems/dax.txt
+++ b/Documentation/filesystems/dax.txt
@@ -60,9 +60,10 @@ Filesystem support consists of
- implementing the direct_IO address space operation, and calling
dax_do_io() instead of blockdev_direct_IO() if S_DAX is set
- implementing an mmap file operation for DAX files which sets the
- VM_MIXEDMAP flag on the VMA, and setting the vm_ops to include handlers
- for fault and page_mkwrite (which should probably call dax_fault() and
- dax_mkwrite(), passing the appropriate get_block() callback)
+ VM_MIXEDMAP and VM_HUGEPAGE flags on the VMA, and setting the vm_ops to
+ include handlers for fault, pmd_fault and page_mkwrite (which should
+ probably call dax_fault(), dax_pmd_fault() and dax_mkwrite(), passing the
+ appropriate get_block() callback)
- calling dax_truncate_page() instead of block_truncate_page() for DAX files
- calling dax_zero_page_range() instead of zero_user() for DAX files
- ensuring that there is sufficient locking between reads, writes,