nfsd: fix possible read-ahead cache and export table corruption

[safe/jmp/linux-2.6] / fs / nfsd / nfs4recover.c

diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index e9d0770..ebd03cc 100644 (file)
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -45,7 +45,7 @@
 #include <asm/uaccess.h>
 #include <asm/scatterlist.h>
 #include <linux/crypto.h>
-
+#include <linux/sched.h>
 
 #define NFSDDBG_FACILITY                NFSDDBG_PROC
 
@@ -259,7 +259,7 @@ nfsd4_remove_clid_file(struct dentry *dir, struct dentry *dentry)
                printk("nfsd4: non-file found in client recovery directory\n");
                return -EINVAL;
        }
-       mutex_lock(&dir->d_inode->i_mutex);
+       mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
        status = vfs_unlink(dir->d_inode, dentry);
        mutex_unlock(&dir->d_inode->i_mutex);
        return status;
@@ -274,7 +274,7 @@ nfsd4_clear_clid_dir(struct dentry *dir, struct dentry *dentry)
         * any regular files anyway, just in case the directory was created by
         * a kernel from the future.... */
        nfsd4_list_rec_dir(dentry, nfsd4_remove_clid_file);
-       mutex_lock(&dir->d_inode->i_mutex);
+       mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
        status = vfs_rmdir(dir->d_inode, dentry);
        mutex_unlock(&dir->d_inode->i_mutex);
        return status;