gfs2: Don't support fallocate on jdata files

We cannot provide an efficient implementation due to the headers
on the data blocks, so there doesn't seem much point in having it.

Signed-off-by: Abhi Das <adas@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>

diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index c706c6d..8252115 100644 (file)
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -917,7 +917,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t le
        struct gfs2_holder gh;
        int ret;
 
-       if (mode & ~FALLOC_FL_KEEP_SIZE)
+       if ((mode & ~FALLOC_FL_KEEP_SIZE) || gfs2_is_jdata(ip))
                return -EOPNOTSUPP;
 
        mutex_lock(&inode->i_mutex);