We need the help of lower vfsmount to decode filehandle.
This patch add a method to get lower vfsmount.
Signed-off-by: Chieh Lin <jaycelin@xxxxxxxxxxxx>
---
fs/ecryptfs/ecryptfs_kernel.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index e74cb2a0b299..cd6359b5faf1 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -535,6 +535,12 @@ ecryptfs_dentry_to_lower_mnt(struct dentry *dentry)
return ((struct ecryptfs_dentry_info *)dentry->d_fsdata)->lower_path.mnt;
}
+static inline struct vfsmount *
+ecryptfs_superblock_to_lower_mnt(struct super_block *sb)
+{
+ return ecryptfs_dentry_to_lower_mnt(sb->s_root);
+}
+
static inline struct path *
ecryptfs_dentry_to_lower_path(struct dentry *dentry)
{
--
2.17.1
