fs/9p: Attach writeback_fid on first open with WR flag

We don't need writeback fid if we are only doing O_RDONLY open

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 3337d58d0fc5..6997eb62fbba 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -91,7 +91,8 @@ int v9fs_file_open(struct inode *inode, struct file *file)
 
         file->private_data = fid;
         mutex_lock(&v9inode->v_mutex);
-        if (v9ses->cache && !v9inode->writeback_fid) {
+        if (v9ses->cache && !v9inode->writeback_fid &&
+            ((file->f_flags & O_ACCMODE) != O_RDONLY)) {
                 /*
                  * clone a fid and add it to writeback_fid
                  * we do it during open time instead of