eCryptfs: update metadata read/write functions

Update the metadata read/write functions and grow_file() to use the
read_write.c routines.  Do not open another lower file; use the persistent
lower file instead.  Provide a separate function for
crypto.c::ecryptfs_read_xattr_region() to get to the lower xattr without
having to go through the eCryptfs getxattr.

Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index 9b621108d5c1..60e635eddc77 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -307,7 +307,7 @@ static int ecryptfs_readpage(struct file *file, struct page *page)
                                 memset(page_virt, 0, PAGE_CACHE_SIZE);
                                 if (page->index == 0) {
                                         rc = ecryptfs_read_xattr_region(
-                                                page_virt, file->f_path.dentry);
+                                                page_virt, page->mapping->host);
                                         set_header_info(page_virt, crypt_stat);
                                 }
                                 kunmap_atomic(page_virt, KM_USER0);