[GFS2] NFS filehandle check

File handle checking error found in '07 NFS connectathon. The fh_type
and fh_len are not necessarily identical. Some of the client machines
could fail mount with stale filehandle without this patch.

Signed-off-by: S. Wendy Cheng <wcheng@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index 1de05b6..aad9183 100644 (file)
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -38,14 +38,11 @@ static struct dentry *gfs2_decode_fh(struct super_block *sb,
        struct gfs2_fh_obj fh_obj;
        struct gfs2_inum_host *this, parent;
 
-       if (fh_type != fh_len)
-               return NULL;
-
        this            = &fh_obj.this;
        fh_obj.imode    = DT_UNKNOWN;
        memset(&parent, 0, sizeof(struct gfs2_inum));
 
-       switch (fh_type) {
+       switch (fh_len) {
        case GFS2_LARGE_FH_SIZE:
                parent.no_formal_ino = ((u64)be32_to_cpu(fh[4])) << 32;
                parent.no_formal_ino |= be32_to_cpu(fh[5]);