2 files changed, 29 insertions, 3 deletions

diff --git a/fs/relayfs/buffers.c b/fs/relayfs/buffers.c
index 667b529944c5..10187812771e 100644
--- a/fs/relayfs/buffers.c
+++ b/fs/relayfs/buffers.c
@@ -185,6 +185,6 @@ void relay_destroy_buf(struct rchan_buf *buf)
 void relay_remove_buf(struct kref *kref)
 {
         struct rchan_buf *buf = container_of(kref, struct rchan_buf, kref);
-        relayfs_remove(buf->dentry);
+        buf->chan->cb->remove_buf_file(buf->dentry);
         relay_destroy_buf(buf);
 }
diff --git a/fs/relayfs/relay.c b/fs/relayfs/relay.c
index a9cd5585c45c..b9bb56903272 100644
--- a/fs/relayfs/relay.c
+++ b/fs/relayfs/relay.c
@@ -80,11 +80,33 @@ static void buf_unmapped_default_callback(struct rchan_buf *buf,
 {
 }
 
+/*
+ * create_buf_file_create() default callback.  Creates file to represent buf.
+ */
+static struct dentry *create_buf_file_default_callback(const char *filename,
+                                                       struct dentry *parent,
+                                                       int mode,
+                                                       struct rchan_buf *buf)
+{
+        return relayfs_create_file(filename, parent, mode,
+                                   &relayfs_file_operations, buf);
+}
+
+/*
+ * remove_buf_file() default callback.  Removes file representing relay buffer.
+ */
+static int remove_buf_file_default_callback(struct dentry *dentry)
+{
+        return relayfs_remove(dentry);
+}
+
 /* relay channel default callbacks */
 static struct rchan_callbacks default_channel_callbacks = {
         .subbuf_start = subbuf_start_default_callback,
         .buf_mapped = buf_mapped_default_callback,
         .buf_unmapped = buf_unmapped_default_callback,
+        .create_buf_file = create_buf_file_default_callback,
+        .remove_buf_file = remove_buf_file_default_callback,
 };
 
 /**
@@ -176,8 +198,8 @@ static struct rchan_buf *relay_open_buf(struct rchan *chan,
                 return NULL;
 
         /* Create file in fs */
-        dentry = relayfs_create_file(filename, parent, S_IRUSR,
-                                     &relayfs_file_operations, buf);
+        dentry = chan->cb->create_buf_file(filename, parent, S_IRUSR,
+                                           buf);
         if (!dentry) {
                 relay_destroy_buf(buf);
                 return NULL;
@@ -220,6 +242,10 @@ static inline void setup_callbacks(struct rchan *chan,
                 cb->buf_mapped = buf_mapped_default_callback;
         if (!cb->buf_unmapped)
                 cb->buf_unmapped = buf_unmapped_default_callback;
+        if (!cb->create_buf_file)
+                cb->create_buf_file = create_buf_file_default_callback;
+        if (!cb->remove_buf_file)
+                cb->remove_buf_file = remove_buf_file_default_callback;
         chan->cb = cb;
 }