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Subject[PATCH v2 20/35] ovl: add O_DIRECT support
Date
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
---
fs/overlayfs/file.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index 2028f6886649..ce871a15e185 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -110,6 +110,9 @@ static int ovl_open(struct inode *inode, struct file *file)
if (IS_ERR(realfile))
return PTR_ERR(realfile);

+ /* For O_DIRECT dentry_open() checks f_mapping->a_ops->direct_IO */
+ file->f_mapping = realfile->f_mapping;
+
file->private_data = realfile;

return 0;
--
2.14.3
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