2 files changed, 7 insertions, 1 deletions

diff --git a/fs/open.c b/fs/open.c
index 4197b9ed023d..5b6ef7e2859e 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -223,7 +223,12 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
                 return -EINVAL;
 
         /* Return error if mode is not supported */
-        if (mode && !(mode & FALLOC_FL_KEEP_SIZE))
+        if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+                return -EOPNOTSUPP;
+
+        /* Punch hole must have keep size set */
+        if ((mode & FALLOC_FL_PUNCH_HOLE) &&
+            !(mode & FALLOC_FL_KEEP_SIZE))
                 return -EOPNOTSUPP;
 
         if (!(file->f_mode & FMODE_WRITE))
diff --git a/include/linux/falloc.h b/include/linux/falloc.h
index 3c155107d61f..73e0b628e058 100644
--- a/include/linux/falloc.h
+++ b/include/linux/falloc.h
@@ -2,6 +2,7 @@
 #define _FALLOC_H_
 
 #define FALLOC_FL_KEEP_SIZE     0x01 /* default is extend size */
+#define FALLOC_FL_PUNCH_HOLE    0x02 /* de-allocates range */
 
 #ifdef __KERNEL__