copy.c: add FIEMAP_FLAG_SYNC to fiemap ioctl

* src/copy.c (fiemap_copy): Force kernel to sync the source
file before mapping.

diff --git a/src/copy.c b/src/copy.c
index f149be460fc8c9fe44f1e64754991096968ca310..f48c74df738d13d69f7069da66f18d5eae5d83d4 100644 (file)
--- a/src/copy.c
+++ b/src/copy.c
@@ -191,6 +191,7 @@ fiemap_copy (int src_fd, int dest_fd, size_t buf_size,
   do
     {
       fiemap->fm_length = FIEMAP_MAX_OFFSET;
+      fiemap->fm_flags = FIEMAP_FLAG_SYNC;
       fiemap->fm_extent_count = count;
 
       /* When ioctl(2) fails, fall back to the normal copy only if it