[PATCH] ecryptfs: check xattr operation support fix

  - ecryptfs_write_inode_size_to_metadata() error code was ignored.
  - i_op->setxattr() must be supported by lower fs because used below.

Signed-off-by: Monakhov Dmitriy <dmonakhov@openvz.org>
Acked-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, 2 insertions, 1 deletions

diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index 7be8e91b5ba0..7def4be83e61 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -502,7 +502,8 @@ static int ecryptfs_write_inode_size_to_xattr(struct inode *lower_inode,
                 goto out;
         }
         lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
-        if (!lower_dentry->d_inode->i_op->getxattr) {
+        if (!lower_dentry->d_inode->i_op->getxattr ||
+                        !lower_dentry->d_inode->i_op->setxattr) {
                 printk(KERN_WARNING
                        "No support for setting xattr in lower filesystem\n");
                 rc = -ENOSYS;