Here's the latest patchset to support multiple read-only layers for overlayfs.
Diffstat is against overlayfs-current branch.
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git overlayfs-next
I hope to have this included in 3.19.
Please review and test (I can post the full patchset if someone wants that).
Thanks,
Miklos
---
Miklos Szeredi (12):
ovl: check whiteout while reading directory
ovl: make path-type a bitmap
ovl: dont replace opaque dir
ovl: add mutli-layer infrastructure
ovl: helper to iterate layers
ovl: multi-layer readdir
ovl: multi-layer lookup
ovl: allow statfs if no upper layer
ovl: mount: change order of initialization
ovl: improve mount helpers
ovl: make upperdir optional
ovl: support multiple lower layers
---
Documentation/filesystems/overlayfs.txt | 12 +
fs/overlayfs/copy_up.c | 4 +-
fs/overlayfs/dir.c | 24 +-
fs/overlayfs/inode.c | 9 +-
fs/overlayfs/overlayfs.h | 14 +-
fs/overlayfs/readdir.c | 120 +++-----
fs/overlayfs/super.c | 521 ++++++++++++++++++++------------
7 files changed, 427 insertions(+), 277 deletions(-)
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