wrapfs-4.8.y.git
8 years agoWrapfs: support direct-IO (DIO) operations
Erez Zadok [Fri, 20 Jun 2014 23:39:40 +0000 (19:39 -0400)]
Wrapfs: support direct-IO (DIO) operations

Signed-off-by: Li Mengyang <li.mengyang@stonybrook.edu>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: implement vm_ops->page_mkwrite
Erez Zadok [Thu, 15 May 2014 03:45:28 +0000 (23:45 -0400)]
Wrapfs: implement vm_ops->page_mkwrite

Some file systems (e.g., ext4) require it.  Reported by Ted Ts'o.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use new vfs_rename prototype
Erez Zadok [Sun, 27 Apr 2014 02:43:20 +0000 (22:43 -0400)]
Wrapfs: use new vfs_rename prototype

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: update documentation
Erez Zadok [Thu, 3 Apr 2014 17:24:28 +0000 (13:24 -0400)]
Wrapfs: update documentation

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: update maintainers
Erez Zadok [Thu, 3 Apr 2014 17:17:55 +0000 (13:17 -0400)]
Wrapfs: update maintainers

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: update documentation
Erez Zadok [Tue, 21 Jan 2014 08:03:00 +0000 (03:03 -0500)]
Wrapfs: update documentation

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: 2014 Copyright update
Erez Zadok [Tue, 21 Jan 2014 06:25:54 +0000 (01:25 -0500)]
Wrapfs: 2014 Copyright update

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use generic put_link helper
Erez Zadok [Wed, 27 Nov 2013 04:05:22 +0000 (23:05 -0500)]
Wrapfs: use generic put_link helper

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: remove unnecessary initializations
Erez Zadok [Wed, 27 Nov 2013 04:03:46 +0000 (23:03 -0500)]
Wrapfs: remove unnecessary initializations

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: remove deprecated init_lower_nd
Erez Zadok [Sun, 24 Nov 2013 16:12:07 +0000 (11:12 -0500)]
Wrapfs: remove deprecated init_lower_nd

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: update MAINTAINERS info
Erez Zadok [Wed, 20 Nov 2013 00:00:00 +0000 (19:00 -0500)]
Wrapfs: update MAINTAINERS info

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agopatch wrapfs-copyright-update.patch
Erez Zadok [Tue, 19 Nov 2013 23:59:47 +0000 (18:59 -0500)]
patch wrapfs-copyright-update.patch

8 years agoWrapfs: use DCACHE_OP_REVALIDATE flag in ->d_revalidate
Erez Zadok [Tue, 19 Nov 2013 22:23:31 +0000 (17:23 -0500)]
Wrapfs: use DCACHE_OP_REVALIDATE flag in ->d_revalidate

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: implement ->getattr
Erez Zadok [Tue, 19 Nov 2013 22:22:31 +0000 (17:22 -0500)]
Wrapfs: implement ->getattr

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use file_inode helper
Erez Zadok [Tue, 19 Nov 2013 22:21:31 +0000 (17:21 -0500)]
Wrapfs: use file_inode helper

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: call filemap_write_and_wait in ->flush
Erez Zadok [Tue, 19 Nov 2013 22:20:31 +0000 (17:20 -0500)]
Wrapfs: call filemap_write_and_wait in ->flush

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: handle new VFS API with delegation support
Erez Zadok [Tue, 19 Nov 2013 22:19:31 +0000 (17:19 -0500)]
Wrapfs: handle new VFS API with delegation support

For now, wrapfs isn't supporting NFS delegations.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoVFS: export vfs_path_lookup
Erez Zadok [Tue, 19 Nov 2013 22:18:31 +0000 (17:18 -0500)]
VFS: export vfs_path_lookup

In 3.12, this useful function was unexported: wrapfs needs a way to lookup
relative to a struct path and use a proper vfsmount, unlike lookup_one_len.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: ->readdir op now ->iterate
Erez Zadok [Tue, 19 Nov 2013 22:17:31 +0000 (17:17 -0500)]
Wrapfs: ->readdir op now ->iterate

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: copy lower inode attributes in ->ioctl
Erez Zadok [Wed, 5 Jun 2013 05:36:58 +0000 (01:36 -0400)]
Wrapfs: copy lower inode attributes in ->ioctl

Some ioctls (e.g., EXT2_IOC_SETFLAGS) can change inode attributes, so copy
them from lower inode.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: remove unnecessary call to vm_unmap in ->mmap
Erez Zadok [Wed, 5 Jun 2013 05:36:58 +0000 (01:36 -0400)]
Wrapfs: remove unnecessary call to vm_unmap in ->mmap

Code is unnecessary and causes deadlocks in newer kernels.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: declare MODULE_ALIAS_FS
Erez Zadok [Wed, 5 Jun 2013 03:19:32 +0000 (23:19 -0400)]
Wrapfs: declare MODULE_ALIAS_FS

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: don't use FS_REVAL_DOT in fs_flags
Erez Zadok [Wed, 5 Jun 2013 03:19:32 +0000 (23:19 -0400)]
Wrapfs: don't use FS_REVAL_DOT in fs_flags

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: remove dependency on now-defunct CONFIG_EXPERIMENTAL
Erez Zadok [Wed, 5 Jun 2013 03:19:31 +0000 (23:19 -0400)]
Wrapfs: remove dependency on now-defunct CONFIG_EXPERIMENTAL

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: dentry_open() no longer does mntput/dput
Erez Zadok [Wed, 5 Jun 2013 03:19:31 +0000 (23:19 -0400)]
Wrapfs: dentry_open() no longer does mntput/dput

We need to grab a reference on the path before dentry_open, and drop it
after.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: no need to call mnt_want_write any longer
Erez Zadok [Wed, 5 Jun 2013 03:19:30 +0000 (23:19 -0400)]
Wrapfs: no need to call mnt_want_write any longer

Apparently this is now being done by the VFS.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: remove VM_CAN_NONLINEAR flag use in ->mmap
Erez Zadok [Wed, 5 Jun 2013 03:19:30 +0000 (23:19 -0400)]
Wrapfs: remove VM_CAN_NONLINEAR flag use in ->mmap

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: ->lookup takes flags not a nameidata
Erez Zadok [Wed, 5 Jun 2013 03:19:29 +0000 (23:19 -0400)]
Wrapfs: ->lookup takes flags not a nameidata

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: ->create no longer takes a nameidata, only a flag
Erez Zadok [Wed, 5 Jun 2013 03:19:29 +0000 (23:19 -0400)]
Wrapfs: ->create no longer takes a nameidata, only a flag

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: ->d_revalidate now takes namei flags, not nameidata
Erez Zadok [Wed, 5 Jun 2013 03:19:29 +0000 (23:19 -0400)]
Wrapfs: ->d_revalidate now takes namei flags, not nameidata

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: struct nameidata no longer has an open-intent data
Erez Zadok [Wed, 5 Jun 2013 03:19:28 +0000 (23:19 -0400)]
Wrapfs: struct nameidata no longer has an open-intent data

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: dentry_open now takes a struct path
Erez Zadok [Wed, 5 Jun 2013 03:19:28 +0000 (23:19 -0400)]
Wrapfs: dentry_open now takes a struct path

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use vm_munmap in ->mmap
Erez Zadok [Wed, 5 Jun 2013 03:19:27 +0000 (23:19 -0400)]
Wrapfs: use vm_munmap in ->mmap

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use clear_inode in evict_inode
Erez Zadok [Wed, 5 Jun 2013 03:19:27 +0000 (23:19 -0400)]
Wrapfs: use clear_inode in evict_inode

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use d_make_root
Erez Zadok [Wed, 5 Jun 2013 03:19:26 +0000 (23:19 -0400)]
Wrapfs: use d_make_root

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use mode_t
Erez Zadok [Tue, 31 Jan 2012 09:40:19 +0000 (04:40 -0500)]
Wrapfs: use mode_t

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use set_nlink()
Erez Zadok [Mon, 30 Jan 2012 01:34:27 +0000 (20:34 -0500)]
Wrapfs: use set_nlink()

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: drop our dentry in ->rmdir
Erez Zadok [Fri, 9 Sep 2011 04:47:49 +0000 (00:47 -0400)]
Wrapfs: drop our dentry in ->rmdir

Also clear nlinks on our inode.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use d_alloc_root
Erez Zadok [Tue, 6 Sep 2011 04:10:32 +0000 (00:10 -0400)]
Wrapfs: use d_alloc_root

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use d_set_d_op
Erez Zadok [Tue, 6 Sep 2011 04:10:31 +0000 (00:10 -0400)]
Wrapfs: use d_set_d_op

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: use updated vfs_path_lookup prototype
Erez Zadok [Tue, 6 Sep 2011 04:10:30 +0000 (00:10 -0400)]
Wrapfs: use updated vfs_path_lookup prototype

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: ->fsync updates for new prototype
Erez Zadok [Tue, 6 Sep 2011 04:10:30 +0000 (00:10 -0400)]
Wrapfs: ->fsync updates for new prototype

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: support LOOKUP_RCU in ->d_revalidate
Erez Zadok [Tue, 6 Sep 2011 04:10:29 +0000 (00:10 -0400)]
Wrapfs: support LOOKUP_RCU in ->d_revalidate

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: new ->permission prototype and fixes.
Erez Zadok [Tue, 6 Sep 2011 04:10:28 +0000 (00:10 -0400)]
Wrapfs: new ->permission prototype and fixes.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: lookup fixes
Erez Zadok [Mon, 2 May 2011 06:00:02 +0000 (02:00 -0400)]
Wrapfs: lookup fixes

Don't use lookup_one_len any longer (doesn't work for NFS).
Initialize lower wrapfs_dentry_info so lower_path is NULL.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: remove extra debug in rmdir
Erez Zadok [Fri, 18 Mar 2011 17:14:28 +0000 (13:14 -0400)]
Wrapfs: remove extra debug in rmdir

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: checkpatch fixes
Erez Zadok [Fri, 18 Mar 2011 16:38:01 +0000 (12:38 -0400)]
Wrapfs: checkpatch fixes

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: port to 2.6.39
Erez Zadok [Fri, 18 Mar 2011 04:45:17 +0000 (00:45 -0400)]
Wrapfs: port to 2.6.39

Remove lock/unlock_kernel in ->fasync.
Convert from ->get_sb to ->mount op.
Remove include to smp_lock.h, added sched.h.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: copyright update for 2011
Erez Zadok [Fri, 18 Mar 2011 03:21:55 +0000 (23:21 -0400)]
Wrapfs: copyright update for 2011

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: better handling of NFS silly-renamed files
Erez Zadok [Fri, 18 Mar 2011 03:21:55 +0000 (23:21 -0400)]
Wrapfs: better handling of NFS silly-renamed files

In ->unlink, if we try to unlink an NFS silly-renamed file, NFS returns
-EBUSY.  We have to treat it as a success and return 0 to the VFS.  NFS will
remove silly-deleted files later on anyway.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: update parent directory inode size in inode ops
Erez Zadok [Fri, 18 Mar 2011 03:21:55 +0000 (23:21 -0400)]
Wrapfs: update parent directory inode size in inode ops

After ->unlink, ->rmdir, and ->rename, we need to copy the (possibly
changed) inode size of the parent directory(ies) where the operation took
place.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: remove unnecessary calls to copy lower inode->n_links
Erez Zadok [Fri, 18 Mar 2011 03:21:55 +0000 (23:21 -0400)]
Wrapfs: remove unnecessary calls to copy lower inode->n_links

Removed from ->create, ->symlink, and ->mknod.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: ->setattr fixes
Erez Zadok [Tue, 8 Mar 2011 04:20:33 +0000 (23:20 -0500)]
Wrapfs: ->setattr fixes

Call inode_change_ok on our inode, not lower.
Don't copy inode sizes (VFS does it).
Pass lower file in struct iattr passed to notify_change on lower inode.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: update ->permission prototye and code for new iperm flag
Erez Zadok [Sun, 6 Mar 2011 21:23:16 +0000 (16:23 -0500)]
Wrapfs: update ->permission prototye and code for new iperm flag

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: handle maxbytes properly
Erez Zadok [Fri, 12 Nov 2010 23:15:05 +0000 (18:15 -0500)]
Wrapfs: handle maxbytes properly

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: support ->unlocked_ioctl and ->compat_ioctl
Erez Zadok [Sat, 11 Sep 2010 19:49:33 +0000 (15:49 -0400)]
Wrapfs: support ->unlocked_ioctl and ->compat_ioctl

Old ->ioctl was split into ->unlocked_ioctl and ->compat_ioctl.  Compat
version doesn't need to lock_kernel any longer.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: new vfs_statfs and ->evict_inode prototypes
Erez Zadok [Wed, 11 Aug 2010 03:50:14 +0000 (23:50 -0400)]
Wrapfs: new vfs_statfs and ->evict_inode prototypes

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: update ->fsync prototype
Erez Zadok [Sat, 7 Aug 2010 03:37:29 +0000 (23:37 -0400)]
Wrapfs: update ->fsync prototype

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: update documentation
Erez Zadok [Wed, 21 Apr 2010 01:22:02 +0000 (21:22 -0400)]
Wrapfs: update documentation

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: include slab.h
Erez Zadok [Tue, 20 Apr 2010 19:32:09 +0000 (15:32 -0400)]
Wrapfs: include slab.h

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: avoid an extra path_get/put pair in wrapfs_open
Erez Zadok [Tue, 20 Apr 2010 19:26:02 +0000 (15:26 -0400)]
Wrapfs: avoid an extra path_get/put pair in wrapfs_open

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: decrement nd_path on follow_link error
Erez Zadok [Fri, 26 Feb 2010 08:18:04 +0000 (03:18 -0500)]
Wrapfs: decrement nd_path on follow_link error

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: don't mention kernel version in modload message
Erez Zadok [Tue, 5 Jan 2010 09:27:00 +0000 (04:27 -0500)]
Wrapfs: don't mention kernel version in modload message

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoKconfig: hook to configure Wrapfs
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Kconfig: hook to configure Wrapfs

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoMakefile: hook to compile Wrapfs
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Makefile: hook to compile Wrapfs

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: file system magic number
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: file system magic number

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: Kconfig options
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: Kconfig options

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: main Makefile
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: main Makefile

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: vm_ops operations
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: vm_ops operations

Includes necessary address_space workaround ops.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: mount-time and module-linkage functions
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: mount-time and module-linkage functions

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: lookup-related functions
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: lookup-related functions

Main lookup function, nameidata helpers, and stacking-interposition
functions.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: file operations
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: file operations

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: dentry operations
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: dentry operations

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: inode operations
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: inode operations

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: superblock operations
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: superblock operations

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: main header file
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: main header file

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: Maintainers
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: Maintainers

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoDocumentation: index entry for Wrapfs
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Documentation: index entry for Wrapfs

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: introduction and usage documentation
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: introduction and usage documentation

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoLinux 4.8.17 master v4.8.17
Greg Kroah-Hartman [Mon, 9 Jan 2017 07:22:35 +0000 (08:22 +0100)]
Linux 4.8.17

8 years agodrm/i915: skip the first 4k of stolen memory on everything >= gen8
Paulo Zanoni [Wed, 14 Dec 2016 14:55:37 +0000 (12:55 -0200)]
drm/i915: skip the first 4k of stolen memory on everything >= gen8

commit 6ba0566cf2afcdb17bff882e3a95cbbcb22c4a83 upstream.

BSpec got updated and this workaround is now listed as standard
required programming for all subsequent projects. This is confirmed to
fix Skylake screen flickering issues (probably caused by the fact that
we initialized a ring in the first page of stolen, but I didn't 100%
confirm this theory).

v2: this is the patch that fixes the screen flickering, document it.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94605
Tested-by: Dominik Klementowski <dominik232@gmail.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1481727338-9901-1-git-send-email-paulo.r.zanoni@intel.com
(cherry picked from commit d43537610470d8829ebd17cd7842f47176e35ebd)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agodrm/i915: Initialize dev_priv->atomic_cdclk_freq at init time
Ville Syrjälä [Tue, 29 Nov 2016 14:13:57 +0000 (16:13 +0200)]
drm/i915: Initialize dev_priv->atomic_cdclk_freq at init time

commit 1f3dc3e334c1192ebe2939ea17ba12f4776f90c3 upstream.

Looks like we're only initializing dev_priv->atomic_cdclk_freq
at resume and commit times, not at init time. Let's do that as
well.

We're now hitting the 'WARN_ON(intel_state->cdclk == 0)' in
hsw_compute_linetime_wm() on account of populating
intel_state->cdclk from dev_priv->atomic_cdclk_freq.
Previously we were mispopulating intel_state->cdclk with
dev_priv->cdclk_freq which always had a proper value at init
time and hence the WARN_ON() didn't trigger.

Cc: Matthew Auld <matthew.auld@intel.com>
Reported-by: Matthew Auld <matthew.auld@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98902
Fixes: 14676ec6b1a6 ("drm/i915: Fix cdclk vs. dev_cdclk mess when not recomputing things")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480428837-4207-1-git-send-email-ville.syrjala@linux.intel.com
Tested-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
(cherry picked from commit 6a259b1f8a9e99b1ed114f8bf8b0cfccee130e54)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agodrm/i915: Fix cdclk vs. dev_cdclk mess when not recomputing things
Ville Syrjälä [Mon, 14 Nov 2016 16:35:09 +0000 (18:35 +0200)]
drm/i915: Fix cdclk vs. dev_cdclk mess when not recomputing things

commit 14676ec6b1a6f2f7fa0bafd98ab42ce77be7a7d4 upstream.

When we end up not recomputing the cdclk, we need to populate
intel_state->cdclk with the "atomic_cdclk_freq" instead of the
current cdclk_freq. When no pipes are active, the actual cdclk_freq
may be lower than what the configuration of the planes and
pipes would require from the point of view of the software state.

This fixes bogus WARNS from skl_max_scale() which is trying to check
the plane software state against the cdclk frequency. So any time
it got called during DPMS off for instance, we might have tripped
the warn if the current mode would have required a higher than
minimum cdclk.

v2: Drop the dev_cdclk stuff (Maarten)

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Mika Kahola <mika.kahola@intel.com>
Cc: bruno.pagani@ens-lyon.org
Cc: Daniel J Blueman <daniel.blueman@gmail.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: Joseph Yasi <joe.yasi@gmail.com>
Tested-by: Paul Bolle <pebolle@tiscali.nl>
Tested-by: Joseph Yasi <joe.yasi@gmail.com> (v1)
Fixes: 1a617b77658e ("drm/i915: Keep track of the cdclk as if all crtc's were active.")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98214
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479141311-11904-2-git-send-email-ville.syrjala@linux.intel.com
(cherry picked from commit e0ca7a6be38ce603d26df5707c22e53870a623e0)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agodrm/i915/dsi: Do not clear DPOUNIT_CLOCK_GATE_DISABLE from vlv_init_display_clock_gating
Hans de Goede [Fri, 2 Dec 2016 14:29:04 +0000 (15:29 +0100)]
drm/i915/dsi: Do not clear DPOUNIT_CLOCK_GATE_DISABLE from vlv_init_display_clock_gating

commit bb98e72adaf9d19719aba35f802d4836f5d5176c upstream.

On my Cherrytrail CUBE iwork8 Air tablet PIPE-A would get stuck on loading
i915 at boot 1 out of every 3 boots, resulting in a non functional LCD.
Once the i915 driver has successfully loaded, the panel can be disabled /
enabled without hitting this issue.

The getting stuck is caused by vlv_init_display_clock_gating() clearing
the DPOUNIT_CLOCK_GATE_DISABLE bit in DSPCLK_GATE_D when called from
chv_pipe_power_well_ops.enable() on driver load, while a pipe is enabled
driving the DSI LCD by the BIOS.

Clearing this bit while DSI is in use is a known issue and
intel_dsi_pre_enable() / intel_dsi_post_disable() already set / clear it
as appropriate.

This commit modifies vlv_init_display_clock_gating() to leave the
DPOUNIT_CLOCK_GATE_DISABLE bit alone fixing the pipe getting stuck.

Changes in v2:
-Replace PIPE-A with "a pipe" or "the pipe" in the commit msg and
comment

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97330
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161202142904.25613-1-hdegoede@redhat.com
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit 721d484563e1a51ada760089c490cbc47e909756)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agodrm/i915/dsi: Fix chv_exec_gpio disabling the GPIOs it is setting
Hans de Goede [Thu, 1 Dec 2016 20:29:09 +0000 (21:29 +0100)]
drm/i915/dsi: Fix chv_exec_gpio disabling the GPIOs it is setting

commit 22ca0d4991169b76e753d767a45f1105c356bbb8 upstream.

Set the CHV_GPIO_GPIOEN bit when updating GPIOs from chv_exec_gpio.

Fixes: a0a6d4ffd2ad ("drm/i915/dsi: add support for gpio elements on CHV")
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161201202925.12220-3-hdegoede@redhat.com
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit b2b45fcd921e864a5e9bbc7aa55dee96d5e11c06)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agonet: mvpp2: fix dma unmapping of TX buffers for fragments
Thomas Petazzoni [Wed, 21 Dec 2016 10:28:49 +0000 (11:28 +0100)]
net: mvpp2: fix dma unmapping of TX buffers for fragments

commit 8354491c9d5b06709384cea91d13019bf5e61449 upstream.

Since commit 71ce391dfb784 ("net: mvpp2: enable proper per-CPU TX
buffers unmapping"), we are not correctly DMA unmapping TX buffers for
fragments.

Indeed, the mvpp2_txq_inc_put() function only stores in the
txq_cpu->tx_buffs[] array the physical address of the buffer to be
DMA-unmapped when skb != NULL. In addition, when DMA-unmapping, we use
skb_headlen(skb) to get the size to be unmapped. Both of this works fine
for TX descriptors that are associated directly to a SKB, but not the
ones that are used for fragments, with a NULL pointer as skb:

 - We have a NULL physical address when calling DMA unmap
 - skb_headlen(skb) crashes because skb is NULL

This causes random crashes when fragments are used.

To solve this problem, we need to:

 - Store the physical address of the buffer to be unmapped
   unconditionally, regardless of whether it is tied to a SKB or not.

 - Store the length of the buffer to be unmapped, which requires a new
   field.

Instead of adding a third array to store the length of the buffer to be
unmapped, and as suggested by David Miller, this commit refactors the
tx_buffs[] and tx_skb[] arrays of 'struct mvpp2_txq_pcpu' into a
separate structure 'mvpp2_txq_pcpu_buf', to which a 'size' field is
added. Therefore, instead of having three arrays to allocate/free, we
have a single one, which also improve data locality, reducing the
impact on the CPU cache.

Fixes: 71ce391dfb784 ("net: mvpp2: enable proper per-CPU TX buffers unmapping")
Reported-by: Raphael G <raphael.glon@corp.ovh.com>
Cc: Raphael G <raphael.glon@corp.ovh.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agosg_write()/bsg_write() is not fit to be called under KERNEL_DS
Al Viro [Fri, 16 Dec 2016 18:42:06 +0000 (13:42 -0500)]
sg_write()/bsg_write() is not fit to be called under KERNEL_DS

commit 128394eff343fc6d2f32172f03e24829539c5835 upstream.

Both damn things interpret userland pointers embedded into the payload;
worse, they are actually traversing those.  Leaving aside the bad
API design, this is very much _not_ safe to call with KERNEL_DS.
Bail out early if that happens.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agokconfig/nconf: Fix hang when editing symbol with a long prompt
Ben Hutchings [Thu, 24 Nov 2016 22:10:23 +0000 (22:10 +0000)]
kconfig/nconf: Fix hang when editing symbol with a long prompt

commit 79e51b5c2deea542b3bb8c66e0d502230b017dde upstream.

Currently it is impossible to edit the value of a config symbol with a
prompt longer than (terminal width - 2) characters.  dialog_inputbox()
calculates a negative x-offset for the input window and newwin() fails
as this is invalid.  It also doesn't check for this failure, so it
busy-loops calling wgetch(NULL) which immediately returns -1.

The additions in the offset calculations also don't match the intended
size of the window.

Limit the window size and calculate the offset similarly to
show_scroll_win().

Fixes: 692d97c380c6 ("kconfig: new configuration interface (nconfig)")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agotarget/user: Fix use-after-free of tcmu_cmds if they are expired
Andy Grover [Tue, 22 Nov 2016 00:35:30 +0000 (16:35 -0800)]
target/user: Fix use-after-free of tcmu_cmds if they are expired

commit d0905ca757bc40bd1ebc261a448a521b064777d7 upstream.

Don't free the cmd in tcmu_check_expired_cmd, it's still referenced by
an entry in our cmd_id->cmd idr. If userspace ever resumes processing,
tcmu_handle_completions() will use the now-invalid cmd pointer.

Instead, don't free cmd. It will be freed by tcmu_handle_completion() if
userspace ever recovers, or tcmu_free_device if not.

Reported-by: Bryant G Ly <bgly@us.ibm.com>
Tested-by: Bryant G Ly <bgly@us.ibm.com>
Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agolibnvdimm, pfn: fix align attribute
Dan Williams [Sat, 10 Dec 2016 16:12:05 +0000 (08:12 -0800)]
libnvdimm, pfn: fix align attribute

commit af7d9f0c57941b465043681cb5c3410f7f3f1a41 upstream.

Fix the format specifier so that the attribute can be parsed correctly.
Currently it returns decimal 1000 for a 4096-byte alignment.

Reported-by: Dave Jiang <dave.jiang@intel.com>
Fixes: 315c562536c4 ("libnvdimm, pfn: add 'align' attribute, default to HPAGE_SIZE")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agopowerpc/ps3: Fix system hang with GCC 5 builds
Geoff Levand [Tue, 29 Nov 2016 18:47:32 +0000 (10:47 -0800)]
powerpc/ps3: Fix system hang with GCC 5 builds

commit 6dff5b67054e17c91bd630bcdda17cfca5aa4215 upstream.

GCC 5 generates different code for this bootwrapper null check that
causes the PS3 to hang very early in its bootup. This check is of
limited value, so just get rid of it.

Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agopowerpc/64e: Convert cmpi to cmpwi in head_64.S
Nicholas Piggin [Wed, 23 Nov 2016 13:02:07 +0000 (00:02 +1100)]
powerpc/64e: Convert cmpi to cmpwi in head_64.S

commit f87f253bac3ce4a4eb2a60a1ae604d74e65f9042 upstream.

From 80f23935cadb ("powerpc: Convert cmp to cmpd in idle enter sequence"):

  PowerPC's "cmp" instruction has four operands. Normally people write
  "cmpw" or "cmpd" for the second cmp operand 0 or 1. But, frequently
  people forget, and write "cmp" with just three operands.

  With older binutils this is silently accepted as if this was "cmpw",
  while often "cmpd" is wanted. With newer binutils GAS will complain
  about this for 64-bit code. For 32-bit code it still silently assumes
  "cmpw" is what is meant.

In this case, cmpwi is called for, so this is just a build fix for
new toolchains.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoSUNRPC: fix refcounting problems with auth_gss messages.
NeilBrown [Mon, 5 Dec 2016 04:10:11 +0000 (15:10 +1100)]
SUNRPC: fix refcounting problems with auth_gss messages.

commit 1cded9d2974fe4fe339fc0ccd6638b80d465ab2c upstream.

There are two problems with refcounting of auth_gss messages.

First, the reference on the pipe->pipe list (taken by a call
to rpc_queue_upcall()) is not counted.  It seems to be
assumed that a message in pipe->pipe will always also be in
pipe->in_downcall, where it is correctly reference counted.

However there is no guaranty of this.  I have a report of a
NULL dereferences in rpc_pipe_read() which suggests a msg
that has been freed is still on the pipe->pipe list.

One way I imagine this might happen is:
- message is queued for uid=U and auth->service=S1
- rpc.gssd reads this message and starts processing.
  This removes the message from pipe->pipe
- message is queued for uid=U and auth->service=S2
- rpc.gssd replies to the first message. gss_pipe_downcall()
  calls __gss_find_upcall(pipe, U, NULL) and it finds the
  *second* message, as new messages are placed at the head
  of ->in_downcall, and the service type is not checked.
- This second message is removed from ->in_downcall and freed
  by gss_release_msg() (even though it is still on pipe->pipe)
- rpc.gssd tries to read another message, and dereferences a pointer
  to this message that has just been freed.

I fix this by incrementing the reference count before calling
rpc_queue_upcall(), and decrementing it if that fails, or normally in
gss_pipe_destroy_msg().

It seems strange that the reply doesn't target the message more
precisely, but I don't know all the details.  In any case, I think the
reference counting irregularity became a measureable bug when the
extra arg was added to __gss_find_upcall(), hence the Fixes: line
below.

The second problem is that if rpc_queue_upcall() fails, the new
message is not freed. gss_alloc_msg() set the ->count to 1,
gss_add_msg() increments this to 2, gss_unhash_msg() decrements to 1,
then the pointer is discarded so the memory never gets freed.

Fixes: 9130b8dbc6ac ("SUNRPC: allow for upcalls for same uid but different gss service")
Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1011250
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agopNFS: Fix a deadlock between read resends and layoutreturn
Trond Myklebust [Sun, 27 Nov 2016 20:12:39 +0000 (15:12 -0500)]
pNFS: Fix a deadlock between read resends and layoutreturn

commit 54e4a0dfa25d9365c4e80a639e80d9213eb6edbe upstream.

We must not call nfs_pageio_init_read() on a new nfs_pageio_descriptor
while holding a reference to a layout segment, as that can deadlock
pnfs_update_layout().

Fixes: d67ae825a59d6 ("pnfs/flexfiles: Add the FlexFile Layout Driver")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agopNFS: Clear NFS_LAYOUT_RETURN_REQUESTED when invalidating the layout stateid
Trond Myklebust [Mon, 14 Nov 2016 19:34:18 +0000 (14:34 -0500)]
pNFS: Clear NFS_LAYOUT_RETURN_REQUESTED when invalidating the layout stateid

commit ae5a459d5f65c3e83f3e14068dde5fb9c9d81807 upstream.

We must ensure that we don't schedule a layoutreturn if the layout stateid
has been marked as invalid.

Fixes: 2a59a0411671e ("pNFS: Fix pnfs_set_layout_stateid() to clear...")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agopNFS: Don't clear the layout stateid if a layout return is outstanding
Trond Myklebust [Mon, 14 Nov 2016 18:10:48 +0000 (13:10 -0500)]
pNFS: Don't clear the layout stateid if a layout return is outstanding

commit 7b650994ab07434ae58a247dc9ac87d2488ca75c upstream.

If we no longer hold any layout segments, we're normally expected to
consider the layout stateid to be invalid. However we cannot assume this
if we're about to, or in the process of sending a layoutreturn.

Fixes: 334a8f37115b ("pNFS: Don't forget the layout stateid if...")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agopNFS: On error, do not send LAYOUTGET until the LAYOUTRETURN has completed
Trond Myklebust [Mon, 17 Oct 2016 21:54:32 +0000 (17:54 -0400)]
pNFS: On error, do not send LAYOUTGET until the LAYOUTRETURN has completed

commit 6604b203fb6394ed1f24c21bfa3c207e5ae8e461 upstream.

If there is an I/O error, we should not call LAYOUTGET until the
LAYOUTRETURN that reports the error is complete.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agonfs_write_end(): fix handling of short copies
Al Viro [Tue, 6 Sep 2016 01:42:32 +0000 (21:42 -0400)]
nfs_write_end(): fix handling of short copies

commit c0cf3ef5e0f47e385920450b245d22bead93e7ad upstream.

What matters when deciding if we should make a page uptodate is
not how much we _wanted_ to copy, but how much we actually have
copied.  As it is, on architectures that do not zero tail on
short copy we can leave uninitialized data in page marked uptodate.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agolibceph: verify authorize reply on connect
Ilya Dryomov [Fri, 2 Dec 2016 15:35:09 +0000 (16:35 +0100)]
libceph: verify authorize reply on connect

commit 5c056fdc5b474329037f2aa18401bd73033e0ce0 upstream.

After sending an authorizer (ceph_x_authorize_a + ceph_x_authorize_b),
the client gets back a ceph_x_authorize_reply, which it is supposed to
verify to ensure the authenticity and protect against replay attacks.
The code for doing this is there (ceph_x_verify_authorizer_reply(),
ceph_auth_verify_authorizer_reply() + plumbing), but it is never
invoked by the the messenger.

AFAICT this goes back to 2009, when ceph authentication protocols
support was added to the kernel client in 4e7a5dcd1bba ("ceph:
negotiate authentication protocol; implement AUTH_NONE protocol").

The second param of ceph_connection_operations::verify_authorizer_reply
is unused all the way down.  Pass 0 to facilitate backporting, and kill
it in the next commit.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoPCI: Check for PME in targeted sleep state
Alan Stern [Fri, 21 Oct 2016 20:45:38 +0000 (16:45 -0400)]
PCI: Check for PME in targeted sleep state

commit 6496ebd7edf446fccf8266a1a70ffcb64252593e upstream.

One some systems, the firmware does not allow certain PCI devices to be put
in deep D-states.  This can cause problems for wakeup signalling, if the
device does not support PME# in the deepest allowed suspend state.  For
example, Pierre reports that on his system, ACPI does not permit his xHCI
host controller to go into D3 during runtime suspend -- but D3 is the only
state in which the controller can generate PME# signals.  As a result, the
controller goes into runtime suspend but never wakes up, so it doesn't work
properly.  USB devices plugged into the controller are never detected.

If the device relies on PME# for wakeup signals but is not capable of
generating PME# in the target state, the PCI core should accurately report
that it cannot do wakeup from runtime suspend.  This patch modifies the
pci_dev_run_wake() routine to add this check.

Reported-by: Pierre de Villemereuil <flyos@mailoo.org>
Tested-by: Pierre de Villemereuil <flyos@mailoo.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
CC: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>