1 files changed, 8 insertions, 0 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d7bf2e7ee8a0..a1761f01cf11 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6595,9 +6595,17 @@ static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb,
                    btrfs_submit_direct, 0);
 }
 
+#define BTRFS_FIEMAP_FLAGS      (FIEMAP_FLAG_SYNC)
+
 static int btrfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
                 __u64 start, __u64 len)
 {
+        int     ret;
+
+        ret = fiemap_check_flags(fieinfo, BTRFS_FIEMAP_FLAGS);
+        if (ret)
+                return ret;
+
         return extent_fiemap(inode, fieinfo, start, len, btrfs_get_extent_fiemap);
 }