[PATCH] cifs: revalidate mapping when we open files for SMB1 POSIX

[Ronnie Sahlberg <lsahlber@xxxxxxxxxx>]

From: root <root@localhost.localdomain>

RHBZ: 1933527

We have seen read cashe surviving across close to open under
SMB1 POSIX.

Signed-off-by: root <root@localhost.localdomain>
---
 fs/cifs/file.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 26de4329d161..042e24aad410 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -165,6 +165,7 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
 			goto posix_open_ret;
 		}
 	} else {
+		cifs_revalidate_mapping(*pinode);
 		cifs_fattr_to_inode(*pinode, &fattr);
 	}
 
-- 
2.29.2