1 files changed, 24 insertions, 0 deletions

diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index 196d83266e34..1a5e8e893d75 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -489,6 +489,29 @@ static int gfs2_fsync(struct file *file, struct dentry *dentry, int datasync)
 }
 
 /**
+ * gfs2_setlease - acquire/release a file lease
+ * @file: the file pointer
+ * @arg: lease type
+ * @fl: file lock
+ *
+ * Returns: errno
+ */
+
+static int gfs2_setlease(struct file *file, long arg, struct file_lock **fl)
+{
+        struct gfs2_sbd *sdp = GFS2_SB(file->f_mapping->host);
+
+        /*
+         * We don't currently have a way to enforce a lease across the whole
+         * cluster; until we do, disable leases (by just returning -EINVAL),
+         * unless the administrator has requested purely local locking.
+         */
+        if (!sdp->sd_args.ar_localflocks)
+                return -EINVAL;
+        return setlease(file, arg, fl);
+}
+
+/**
  * gfs2_lock - acquire/release a posix lock on a file
  * @file: the file pointer
  * @cmd: either modify or retrieve lock state, possibly wait
@@ -638,6 +661,7 @@ const struct file_operations gfs2_file_fops = {
         .flock          = gfs2_flock,
         .splice_read    = generic_file_splice_read,
         .splice_write   = generic_file_splice_write,
+        .setlease       = gfs2_setlease,
 };
 
 const struct file_operations gfs2_dir_fops = {