2 files changed, 6 insertions, 1 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 7bc7c724805d..a74b89c09f90 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -517,6 +517,8 @@ struct ext4_new_group_data {
                                          EXT4_GET_BLOCKS_CREATE_UNINIT_EXT)
         /* Punch out blocks of an extent */
 #define EXT4_GET_BLOCKS_PUNCH_OUT_EXT           0x0020
+        /* Don't normalize allocation size (used for fallocate) */
+#define EXT4_GET_BLOCKS_NO_NORMALIZE            0x0040
 
 /*
  * Flags used by ext4_free_blocks
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 88ff3a74787b..ae65f247ceda 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -3554,6 +3554,8 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
         else
                 /* disable in-core preallocation for non-regular files */
                 ar.flags = 0;
+        if (flags & EXT4_GET_BLOCKS_NO_NORMALIZE)
+                ar.flags |= EXT4_MB_HINT_NOPREALLOC;
         newblock = ext4_mb_new_blocks(handle, &ar, &err);
         if (!newblock)
                 goto out2;
@@ -3807,7 +3809,8 @@ retry:
                         break;
                 }
                 ret = ext4_map_blocks(handle, inode, &map,
-                                      EXT4_GET_BLOCKS_CREATE_UNINIT_EXT);
+                                      EXT4_GET_BLOCKS_CREATE_UNINIT_EXT |
+                                      EXT4_GET_BLOCKS_NO_NORMALIZE);
                 if (ret <= 0) {
 #ifdef EXT4FS_DEBUG
                         WARN_ON(ret <= 0);