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Subject[GIT PULL] overlayfs update for 4.8
Hi Linus,

Please pull from:

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

First of all, this fixes a regression in overlayfs introduced by the dentry hash
salting. I've moved the patch fixing this to the front of the queue, so if (god
forbid) something needs to be bisected in overlayfs this regression won't
interfere with that.

The biggest part is preparation for selinux support, done by Vivek Goyal.
Essentially this makes all operations on underlying filesystems be done with
credentials of mounter. This makes everything nicely consistent.

There are also fixes for a number of known and recently discovered non-standard
behavior (thanks to Eryu Guan for testing and improving the test suites).

Thanks,
Miklos

---
Al Viro (1):
qstr: constify instances in overlayfs

Andreas Gruenbacher (1):
ovl: store ovl_entry in inode->i_private for all inodes

Miklos Szeredi (13):
ovl: check mounter creds on underlying lookup
ovl: use generic_delete_inode
ovl: simplify permission checking
ovl: fix sgid on directory
ovl: update atime on upper
ovl: permission: return ECHILD instead of ENOENT
ovl: store real inode pointer in ->i_private
ovl: share inode for hard link
ovl: fix POSIX ACL setting
ovl: fix warning
ovl: disallow overlayfs as upperdir
ovl: clear nlink on rmdir
ovl: simplify empty checking

Vivek Goyal (7):
ovl: move some common code in a function
ovl: define ->get_acl() for overlay inodes
ovl: modify ovl_permission() to do checks on two inodes
ovl: do operations on underlying file system in mounter's context
ovl: do not require mounter to have MAY_WRITE on lower
ovl: dilute permission checks on lower only if not special file
ovl: append MAY_READ when diluting write checks

Wei Yongjun (1):
ovl: remove duplicated include from super.c

---
fs/overlayfs/copy_up.c | 1 +
fs/overlayfs/dir.c | 226 +++++++++++++++++++++++++------------------
fs/overlayfs/inode.c | 246 ++++++++++++++++++++++++++++-------------------
fs/overlayfs/overlayfs.h | 30 ++++--
fs/overlayfs/super.c | 178 +++++++++++++++++++++++++++-------
5 files changed, 445 insertions(+), 236 deletions(-)

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