module: reduce symbol table for loaded modules (v2)

[linux-block.git] / fs / namespace.c

diff --git a/fs/namespace.c b/fs/namespace.c
index 3dc283fd4716beacfe037839d2fc5fd5974c925d..7230787d18b02979122218429b4bf8af59b24cf7 100644 (file)
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -22,6 +22,7 @@
 #include <linux/seq_file.h>
 #include <linux/mnt_namespace.h>
 #include <linux/namei.h>
+#include <linux/nsproxy.h>
 #include <linux/security.h>
 #include <linux/mount.h>
 #include <linux/ramfs.h>
@@ -315,7 +316,8 @@ EXPORT_SYMBOL_GPL(mnt_clone_write);
  */
 int mnt_want_write_file(struct file *file)
 {
-       if (!(file->f_mode & FMODE_WRITE))
+       struct inode *inode = file->f_dentry->d_inode;
+       if (!(file->f_mode & FMODE_WRITE) || special_file(inode->i_mode))
                return mnt_want_write(file->f_path.mnt);
        else
                return mnt_clone_write(file->f_path.mnt);