forked from Minki/linux
9df085f3c9
We use uuid to associate an overlay lower file handle with a lower layer, so we can accept lower fs with null uuid as long as all lower layers with null uuid are on the same fs. This change allows enabling index and nfs_export features for the setup of single lower fs of type squashfs - squashfs supports file handles, but has a null uuid. This change also allows enabling index and nfs_export features for nested overlayfs, where the lower overlay has nfs_export enabled. Enabling the index feature with single lower squashfs fixes the unionmount-testsuite test: ./run --ov --squashfs --verify As a by-product, if, like the lower squashfs, upper fs also uses the generic export_encode_fh() implementation to export 32bit inode file handles (e.g. ext4), then the xino_auto config/module/mount option will enable unique overlay inode numbers. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> |
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| .. | ||
| copy_up.c | ||
| dir.c | ||
| export.c | ||
| file.c | ||
| inode.c | ||
| Kconfig | ||
| Makefile | ||
| namei.c | ||
| overlayfs.h | ||
| ovl_entry.h | ||
| readdir.c | ||
| super.c | ||
| util.c | ||