1 files changed, 2 insertions, 0 deletions

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index b1807fd1ac40..792549193865 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -545,6 +545,7 @@ int cifs_close(struct inode *inode, struct file *file)
         } else
                 rc = -EBADF;
 
+        read_lock(&GlobalSMBSeslock);
         if (list_empty(&(CIFS_I(inode)->openFileList))) {
                 cFYI(1, ("closing last open instance for inode %p", inode));
                 /* if the file is not open we do not know if we can cache info
@@ -552,6 +553,7 @@ int cifs_close(struct inode *inode, struct file *file)
                 CIFS_I(inode)->clientCanCacheRead = FALSE;
                 CIFS_I(inode)->clientCanCacheAll  = FALSE;
         }
+        read_unlock(&GlobalSMBSeslock);
         if ((rc == 0) && CIFS_I(inode)->write_behind_rc)
                 rc = CIFS_I(inode)->write_behind_rc;
         FreeXid(xid);