Erez Zadok [Fri, 13 May 2022 23:43:00 +0000 (19:43 -0400)]
Wrapfs: add ->bmap support
Signed-off-by: Aditya Sonavane <aditya.sonavane@stonybrook.edu>
Signed-off-by: Erez Zadok <ezk@cs.stonybrook.edu>
Erez Zadok [Sat, 7 May 2022 22:13:08 +0000 (18:13 -0400)]
wrapfs: copyright year update
Erez Zadok [Sat, 7 May 2022 20:48:59 +0000 (16:48 -0400)]
wrapfs: change http URLs to https
Erez Zadok [Mon, 16 Dec 2019 00:02:42 +0000 (19:02 -0500)]
merge changes
Erez Zadok [Sat, 14 Dec 2019 05:07:12 +0000 (00:07 -0500)]
wrapfs: update copyright
Erez Zadok [Sat, 14 Dec 2019 04:22:35 +0000 (23:22 -0500)]
wrapfs: remove unused variable
Erez Zadok [Fri, 29 Mar 2019 20:46:41 +0000 (16:46 -0400)]
update copyright
Erez Zadok [Fri, 29 Mar 2019 20:40:49 +0000 (16:40 -0400)]
fix spell error
Erez Zadok [Sun, 19 Feb 2017 00:11:23 +0000 (19:11 -0500)]
Wrapfs: ->iget fixes
Change where we igrab/iput to ensure we always hold a valid lower_inode.
Return ENOMEM (not EACCES) if iget5_locked returns NULL.
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Sat, 18 Feb 2017 20:23:22 +0000 (15:23 -0500)]
Wrapfs: update copyrights for 2017
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Sun, 22 May 2016 05:13:47 +0000 (01:13 -0400)]
Wrapfs: support NFS exports
Based on patch from Sandeep Joshi <sanjos100@gmail.com>.
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Sun, 22 May 2016 05:13:47 +0000 (01:13 -0400)]
Wrapfs: use d_splice_alias
Refactor interpose code to allow lookup to use d_splice_alias.
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Mon, 14 Dec 2015 22:53:36 +0000 (17:53 -0500)]
Wrapfs: update nlinks after rename
Signed-off-by: Logeswari P Viswanath <logeswari.pv@hpe.com>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Wed, 4 Nov 2015 05:29:06 +0000 (00:29 -0500)]
Wrapfs: update copyright year to 2015
Erez Zadok [Wed, 4 Nov 2015 05:29:06 +0000 (00:29 -0500)]
Wrapfs: use vfs xattr helpers
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Sat, 16 Aug 2014 03:16:12 +0000 (23:16 -0400)]
Wrapfs: properly copy meta-data after AIO operations from lower inode
Signed-off-by: Mengyang Li <li.mengyang@stonybrook.edu>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Mon, 11 Aug 2014 22:45:59 +0000 (18:45 -0400)]
Wrapfs: leave placeholders for updating upper inode after AIO
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Sun, 10 Aug 2014 05:53:16 +0000 (01:53 -0400)]
Wrapfs: protect lower_file by ref-count during aio operation
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Mengyang Li <li.mengyang@stonybrook.edu>
Erez Zadok [Thu, 26 Jun 2014 03:13:13 +0000 (23:13 -0400)]
Wrapfs: fix ->llseek to update upper and lower offsets
Fixes bug: xfstests generic/257. f_pos consistently is required by and
only by dir_ops->wrapfs_readdir, main_ops is not affected.
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Mengyang Li <li.mengyang@stonybrook.edu>
Erez Zadok [Thu, 26 Jun 2014 03:13:13 +0000 (23:13 -0400)]
Wrapfs: support extended attributes (xattr) operations
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Mengyang Li <li.mengyang@stonybrook.edu>
Erez Zadok [Sat, 21 Jun 2014 00:19:36 +0000 (20:19 -0400)]
Wrapfs: support asynchronous-IO (AIO) operations
Signed-off-by: Li Mengyang <li.mengyang@stonybrook.edu>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Sat, 21 Jun 2014 00:19:36 +0000 (20:19 -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>
Erez Zadok [Thu, 15 May 2014 04:16:07 +0000 (00:16 -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>
Erez Zadok [Thu, 3 Apr 2014 18:21:08 +0000 (14:21 -0400)]
Wrapfs: update documentation
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Thu, 3 Apr 2014 18:21:06 +0000 (14:21 -0400)]
Wrapfs: update maintainers
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Tue, 21 Jan 2014 08:28:33 +0000 (03:28 -0500)]
Wrapfs: update documentation
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Tue, 21 Jan 2014 06:21:00 +0000 (01:21 -0500)]
Wrapfs: 2014 Copyright update
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Wed, 5 Jun 2013 05:34:01 +0000 (01:34 -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>
Erez Zadok [Wed, 5 Jun 2013 05:26:46 +0000 (01:26 -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>
Erez Zadok [Mon, 3 Jun 2013 04:28:50 +0000 (00:28 -0400)]
patch copyright-2013.patch
Erez Zadok [Mon, 3 Jun 2013 04:26:34 +0000 (00:26 -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>
Erez Zadok [Mon, 3 Jun 2013 04:26:33 +0000 (00:26 -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>
Erez Zadok [Mon, 3 Jun 2013 04:26:33 +0000 (00:26 -0400)]
Wrapfs: remove VM_CAN_NONLINEAR flag use in ->mmap
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Mon, 3 Jun 2013 04:26:32 +0000 (00:26 -0400)]
Wrapfs: ->lookup takes flags not a nameidata
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Mon, 3 Jun 2013 04:26:32 +0000 (00:26 -0400)]
Wrapfs: ->create no longer takes a nameidata, only a flag
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Mon, 3 Jun 2013 04:26:31 +0000 (00:26 -0400)]
Wrapfs: ->d_revalidate now takes namei flags, not nameidata
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Mon, 3 Jun 2013 04:26:31 +0000 (00:26 -0400)]
Wrapfs: struct nameidata no longer has an open-intent data
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Mon, 3 Jun 2013 04:26:30 +0000 (00:26 -0400)]
Wrapfs: dentry_open now takes a struct path
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Mon, 3 Jun 2013 04:26:28 +0000 (00:26 -0400)]
Wrapfs: use vm_munmap in ->mmap
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Wed, 29 May 2013 02:33:27 +0000 (22:33 -0400)]
Wrapfs: use clear_inode in evict_inode
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Erez Zadok [Wed, 29 May 2013 02:33:27 +0000 (22:33 -0400)]
Wrapfs: use d_make_root
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: Maintainers
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
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>
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>
Greg Kroah-Hartman [Sat, 11 May 2013 20:57:46 +0000 (13:57 -0700)]
Linux 3.8.13
Jerry Hoemann [Tue, 30 Apr 2013 21:15:55 +0000 (15:15 -0600)]
x86/mm: account for PGDIR_SIZE alignment
Patch for -stable. Function find_early_table_space removed upstream.
Fixes panic in alloc_low_page due to pgt_buf overflow during
init_memory_mapping.
find_early_table_space sizes pgt_buf based upon the size of the
memory being mapped, but it does not take into account the alignment
of the memory. When the region being mapped spans a 512GB (PGDIR_SIZE)
alignment, a panic from alloc_low_pages occurs.
kernel_physical_mapping_init takes into account PGDIR_SIZE alignment.
This causes an extra call to alloc_low_page to be made. This extra call
isn't accounted for by find_early_table_space and causes a kernel panic.
Change is to take into account PGDIR_SIZE alignment in find_early_table_space.
Signed-off-by: Jerry Hoemann <jerry.hoemann@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chen Gang [Mon, 29 Apr 2013 22:05:19 +0000 (15:05 -0700)]
kernel/audit_tree.c: tree will leak memory when failure occurs in audit_trim_trees()
commit
12b2f117f3bf738c1a00a6f64393f1953a740bd4 upstream.
audit_trim_trees() calls get_tree(). If a failure occurs we must call
put_tree().
[akpm@linux-foundation.org: run put_tree() before mutex_lock() for small scalability improvement]
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Paris <eparis@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Trond Myklebust [Tue, 30 Apr 2013 16:43:42 +0000 (12:43 -0400)]
NFSv4.x: Fix handling of partially delegated locks
commit
c5a2a15f8146fdfe45078df7873a6dc1006b3869 upstream.
If a NFS client receives a delegation for a file after it has taken
a lock on that file, we can currently end up in a situation where
we mistakenly skip unlocking that file.
The following patch swaps an erroneous check in nfs4_proc_unlck for
whether or not the file has a delegation to one which checks whether
or not we hold a lock stateid for that file.
Reported-by: Chuck Lever <Chuck.Lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Tested-by: Chuck Lever <Chuck.Lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Srivatsa S. Bhat [Tue, 30 Apr 2013 09:47:16 +0000 (15:17 +0530)]
EDAC: Don't give write permission to read-only files
commit
c8c64d165ccfd2274058ac84e0c680f9b48c4ec1 upstream.
I get the following warning on boot:
------------[ cut here ]------------
WARNING: at drivers/base/core.c:575 device_create_file+0x9a/0xa0()
Hardware name: -[8737R2A]-
Write permission without 'store'
...
</snip>
Drilling down, this is related to dynamic channel ce_count attribute
files sporting a S_IWUSR mode without a ->store() function. Looking
around, it appears that they aren't supposed to have a ->store()
function. So remove the bogus write permission to get rid of the
warning.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
[ shorten commit message ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Josef Bacik [Wed, 24 Apr 2013 20:32:55 +0000 (16:32 -0400)]
Btrfs: fix extent logging with O_DIRECT into prealloc
commit
eb384b55ae9c2055ea00c5cc87971e182d47aefa upstream.
This is the same as the fix from commit
Btrfs: fix bad extent logging
but for O_DIRECT. I missed this when I fixed the problem originally, we were
still using the em for the orig_start and orig_block_len, which would be the
merged extent. We need to use the actual extent from the on disk file extent
item, which we have to lookup to make sure it's ok to nocow anyway so just pass
in some pointers to hold this info. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Josef Bacik [Tue, 2 Apr 2013 00:36:28 +0000 (20:36 -0400)]
Btrfs: compare relevant parts of delayed tree refs
commit
41b0fc42800569f63e029549b75c4c9cb63f2dfd upstream.
A user reported a panic while running a balance. What was happening was he was
relocating a block, which added the reference to the relocation tree. Then
relocation would walk through the relocation tree and drop that reference and
free that block, and then it would walk down a snapshot which referenced the
same block and add another ref to the block. The problem is this was all
happening in the same transaction, so the parent block was free'ed up when we
drop our reference which was immediately available for allocation, and then it
was used _again_ to add a reference for the same block from a different
snapshot. This resulted in something like this in the delayed ref tree
add ref to
90234880, parent=
2067398656, ref_root 1766, level 1
del ref to
90234880, parent=
2067398656, ref_root
18446744073709551608, level 1
add ref to
90234880, parent=
2067398656, ref_root 1767, level 1
as you can see the ref_root's don't match, because when we inc the ref we use
the header owner, which is the original tree the block belonged to, instead of
the data reloc tree. Then when we remove the extent we use the reloc tree
objectid. But none of this matters, since it is a shared reference which means
only the parent matters. When the delayed ref stuff runs it adds all the
increments first, and then does all the drops, to make sure that we don't delete
the ref if we net a positive ref count. But tree blocks aren't allowed to have
multiple refs from the same block, so this panics when it tries to add the
second ref. We need the add and the drop to cancel each other out in memory so
we only do the final add.
So to fix this we need to adjust how the delayed refs are added to the tree.
Only the ref_root matters when it is a normal backref, and only the parent
matters when it is a shared backref. So make our decision based on what ref
type we have. This allows us to keep the ref_root in memory in case anybody
wants to use it for something else, and it allows the delayed refs to be merged
properly so we don't end up with this panic.
With this patch the users image no longer panics on mount, and it has a clean
fsck after a normal mount/umount cycle. Thanks,
Reported-by: Roman Mamedov <rm@romanrm.ru>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Steven Rostedt (Red Hat) [Fri, 15 Mar 2013 17:10:35 +0000 (13:10 -0400)]
tracing: Fix ftrace_dump()
commit
7fe70b579c9e3daba71635e31b6189394e7b79d3 upstream.
ftrace_dump() had a lot of issues. What ftrace_dump() does, is when
ftrace_dump_on_oops is set (via a kernel parameter or sysctl), it
will dump out the ftrace buffers to the console when either a oops,
panic, or a sysrq-z occurs.
This was written a long time ago when ftrace was fragile to recursion.
But it wasn't written well even for that.
There's a possible deadlock that can occur if a ftrace_dump() is happening
and an NMI triggers another dump. This is because it grabs a lock
before checking if the dump ran.
It also totally disables ftrace, and tracing for no good reasons.
As the ring_buffer now checks if it is read via a oops or NMI, where
there's a chance that the buffer gets corrupted, it will disable
itself. No need to have ftrace_dump() do the same.
ftrace_dump() is now cleaned up where it uses an atomic counter to
make sure only one dump happens at a time. A simple atomic_inc_return()
is enough that is needed for both other CPUs and NMIs. No need for
a spinlock, as if one CPU is running the dump, no other CPU needs
to do it too.
The tracing_on variable is turned off and not turned on. The original
code did this, but it wasn't pretty. By just disabling this variable
we get the result of not seeing traces that happen between crashes.
For sysrq-z, it doesn't get turned on, but the user can always write
a '1' to the tracing_on file. If they are using sysrq-z, then they should
know about tracing_on.
The new code is much easier to read and less error prone. No more
deadlock possibility when an NMI triggers here.
Reported-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Wed, 1 May 2013 18:34:54 +0000 (14:34 -0400)]
drm/radeon: fix handling of v6 power tables
commit
441e76ca83ac604eaf0f046def96d8e3a27eea28 upstream.
The code was mis-handling variable sized arrays.
Reported-by: Sylvain BERTRAND <sylware@legeek.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Thu, 25 Apr 2013 18:06:05 +0000 (14:06 -0400)]
drm/radeon: add new richland pci ids
commit
62d1f92e06aef9665d71ca7e986b3047ecf0b3c7 upstream.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Thu, 25 Apr 2013 13:29:17 +0000 (09:29 -0400)]
drm/radeon: fix possible segfault when parsing pm tables
commit
f8e6bfc2ce162855fa4f9822a45659f4b542c960 upstream.
If we have a empty power table, bail early and allocate
the default power state.
Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=63865
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Wed, 24 Apr 2013 18:39:31 +0000 (14:39 -0400)]
drm/radeon: fix endian bugs in atom_allocate_fb_scratch()
commit
beb71fc61c2cad64e347f164991b8ef476529e64 upstream.
Reviwed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Wed, 17 Apr 2013 13:35:39 +0000 (09:35 -0400)]
drm/radeon: disable the crtcs in mc_stop (r5xx-r7xx) (v2)
commit
e884fc640ccbdb6f94b9bdb57cfb8464b6688f4c upstream.
Just disabling the mem requests should be enough, but
that doesn't seem to work correctly on efi systems.
v2: blank displays first, then disable.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jerome Glisse [Tue, 16 Apr 2013 16:20:15 +0000 (12:20 -0400)]
drm/radeon: Always flush the VM
commit
466476dfdcafbb4286ffa232a3a792731b9dc852 upstream.
This is slightly cleaned up version of Jerome's patch.
There seems to be an issue tracking the last flush of
the VM which results in hangs in certain cases when
VM is used. For now just flush the VM for every IB.
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=62959
https://bugs.freedesktop.org/show_bug.cgi?id=62997
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Thu, 18 Apr 2013 20:26:36 +0000 (16:26 -0400)]
drm/radeon: fix typo in si_select_se_sh()
commit
79b52d6a7085a3e430c6de450a5847fdbe04159b upstream.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>