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| author |   Vivek Goyal <vgoyal@redhat.com> | 2018-05-11 11:49:27 -0400 |
|---|---|---|
| committer |   Miklos Szeredi <mszeredi@redhat.com> | 2018-07-20 09:56:06 +0200 |
| commit | d5791044d2e5749ef4de84161cec5532e2111540 (patch) | |
| tree | 3abb05f2e56381c9d591b8f74bc838836ef4f6fd /fs/overlayfs/ovl_entry.h | |
| parent | ovl: Move the copy up helpers to copy_up.c (diff) | |
| download | linux-dev-d5791044d2e5749ef4de84161cec5532e2111540.tar.xz linux-dev-d5791044d2e5749ef4de84161cec5532e2111540.zip | |
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.h | 1 |
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 { |