ecryptfs: Make inode bdi consistent with superblock bdi

Make the inode mapping bdi consistent with the superblock bdi so that
dirty pages are flushed properly.

Signed-off-by: Thieu Le <thieule@chromium.org>
Cc: <stable@kernel.org> [2.6.39+]
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>

diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 340c657a108c5892f2453e8d6c7e923a14a37cf2..11f8582d72186d679d2452d9ce71e85f277bdbf9 100644 (file)
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -69,6 +69,7 @@ static int ecryptfs_inode_set(struct inode *inode, void *opaque)
        inode->i_ino = lower_inode->i_ino;
        inode->i_version++;
        inode->i_mapping->a_ops = &ecryptfs_aops;
+       inode->i_mapping->backing_dev_info = inode->i_sb->s_bdi;
 
        if (S_ISLNK(inode->i_mode))
                inode->i_op = &ecryptfs_symlink_iops;