linux-kernel - [GIT PULL] multi-layer support for overlay filesystem

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Date:	Wed, 11 Feb 2015 10:30:39 +0100
From:	Miklos Szeredi <miklos@...redi.hu>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	linux-unionfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org
Subject: [GIT PULL] multi-layer support for overlay filesystem

Al,

Please pull from

  git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git overlayfs-next

This adds support for multiple read-only layers to overlayfs.  It also makes the
writable upper layer optional.

This is a highly requested feature and has been in -next for the last cycle.

Thanks,
Miklos

---
Miklos Szeredi (16):
      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: check whiteout on lowest layer as well
      ovl: lookup ENAMETOOLONG on lower means ENOENT
      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
      ovl: add testsuite to docs
      ovl: document lower layer ordering

Seunghun Lee (1):
      ovl: Prevent rw remount when it should be ro mount

hujianyang (5):
      ovl: Cleanup redundant blank lines
      ovl: Use macros to present ovl_xattr
      ovl: Fix kernel panic while mounting overlayfs
      ovl: Fix opaque regression in ovl_lookup
      ovl: discard independent cursor in readdir()

---
 Documentation/filesystems/overlayfs.txt |  28 ++
 fs/overlayfs/copy_up.c                  |   5 +-
 fs/overlayfs/dir.c                      |  28 +-
 fs/overlayfs/inode.c                    |  12 +-
 fs/overlayfs/overlayfs.h                |  18 +-
 fs/overlayfs/readdir.c                  | 181 +++++-----
 fs/overlayfs/super.c                    | 564 +++++++++++++++++++++-----------
 7 files changed, 517 insertions(+), 319 deletions(-)
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