ceph: check unsupported fallocate mode

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 3020851..19af25d 100644 (file)
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1177,6 +1177,9 @@ static long ceph_fallocate(struct file *file, int mode,
        loff_t endoff = 0;
        loff_t size;
 
+       if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+               return -EOPNOTSUPP;
+
        if (!S_ISREG(inode->i_mode))
                return -EOPNOTSUPP;