1 files changed, 3 insertions, 3 deletions

diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 39e534f5a3b0..f099b82703d8 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -1542,7 +1542,7 @@ pfm_exit_smpl_buffer(pfm_buffer_fmt_t *fmt)
  * any operations on the root directory. However, we need a non-trivial
  * d_name - pfm: will go nicely and kill the special-casing in procfs.
  */
-static struct vfsmount *pfmfs_mnt;
+static struct vfsmount *pfmfs_mnt __read_mostly;
 
 static int __init
 init_pfm_fs(void)
@@ -2185,7 +2185,7 @@ static const struct file_operations pfm_file_ops = {
 };
 
 static int
-pfmfs_delete_dentry(struct dentry *dentry)
+pfmfs_delete_dentry(const struct dentry *dentry)
 {
         return 1;
 }
@@ -2233,7 +2233,7 @@ pfm_alloc_file(pfm_context_t *ctx)
         }
         path.mnt = mntget(pfmfs_mnt);
 
-        path.dentry->d_op = &pfmfs_dentry_operations;
+        d_set_d_op(path.dentry, &pfmfs_dentry_operations);
         d_add(path.dentry, inode);
 
         file = alloc_file(&path, FMODE_READ, &pfm_file_ops);