1 files changed, 18 insertions, 0 deletions

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 6c78343cf690..653dfa5b2531 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -79,6 +79,13 @@ int v9fs_file_open(struct inode *inode, struct file *file)
         vfid->filp = file;
         kfree(fcall);
 
+        if((vfid->qid.version) && (v9ses->cache)) {
+                dprintk(DEBUG_VFS, "cached");
+                /* enable cached file options */
+                if(file->f_op == &v9fs_file_operations)
+                        file->f_op = &v9fs_cached_file_operations;
+        }
+
         return 0;
 
 Clunk_Fid:
@@ -238,6 +245,17 @@ v9fs_file_write(struct file *filp, const char __user * data,
         return total;
 }
 
+const struct file_operations v9fs_cached_file_operations = {
+        .llseek = generic_file_llseek,
+        .read = do_sync_read,
+        .aio_read = generic_file_aio_read,
+        .write = v9fs_file_write,
+        .open = v9fs_file_open,
+        .release = v9fs_dir_release,
+        .lock = v9fs_file_lock,
+        .mmap = generic_file_mmap,
+};
+
 const struct file_operations v9fs_file_operations = {
         .llseek = generic_file_llseek,
         .read = v9fs_file_read,