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authorVivek Goyal <vgoyal@redhat.com>2018-05-11 11:49:27 -0400
committerMiklos Szeredi <mszeredi@redhat.com>2018-07-20 09:56:06 +0200
commitd5791044d2e5749ef4de84161cec5532e2111540 (patch)
tree3abb05f2e56381c9d591b8f74bc838836ef4f6fd /fs/overlayfs/ovl_entry.h
parentd6eac039133b31f9db1c63d2e51b88df61d075cc (diff)
ovl: Provide a mount option metacopy=on/off for metadata copyup
By default metadata only copy up is disabled. Provide a mount option so that users can choose one way or other. Also provide a kernel config and module option to enable/disable metacopy feature. metacopy feature requires redirect_dir=on when upper is present. Otherwise, it requires redirect_dir=follow atleast. As of now, metacopy does not work with nfs_export=on. So if both metacopy=on and nfs_export=on then nfs_export is disabled. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/ovl_entry.h')
-rw-r--r--fs/overlayfs/ovl_entry.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/overlayfs/ovl_entry.h b/fs/overlayfs/ovl_entry.h
index 41655a7d6894..ea4134e97d0d 100644
--- a/fs/overlayfs/ovl_entry.h
+++ b/fs/overlayfs/ovl_entry.h
@@ -19,6 +19,7 @@ struct ovl_config {
bool index;
bool nfs_export;
int xino;
+ bool metacopy;
};
struct ovl_sb {