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  1. 18 May, 2010 3 commits
  3. 11 May, 2010 1 commit
  5. 08 May, 2010 1 commit
  7. 06 May, 2010 1 commit
  9. 26 Apr, 2010 1 commit
    • Jerome Glisse's avatar
      drm/radeon/kms: R3XX-R4XX fix GPU reset code · a1e9ada3
      Jerome Glisse authored 
      Previous reset code leaded to computer hard lockup (need to unplug
the power too reboot the computer) on various configuration. This
patch change the reset code to avoid hard lockup. The GPU reset
is failing most of the time but at least user can log in remotely
or properly shutdown the computer.

Two issues were leading to hard lockup :
- Writting to the scratch register lead to hard lockup most likely
because the write back mecanism is in fuzy state after GPU lockup.
- Resetting the GPU memory controller and not reinitializing it
after leaded to hard lockup. We did only reinitialize in case of
successfull reset thus unsuccessfull reset quickly leaded to hard
lockup.
Signed-off-by: default avatarJerome Glisse <jglisse@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      a1e9ada3
  11. 23 Apr, 2010 3 commits
  13. 20 Apr, 2010 22 commits
  15. 19 Apr, 2010 8 commits
    • Linus Torvalds's avatar
      Linux 2.6.34-rc5 · 01bf0b64
      Linus Torvalds authored
      01bf0b64
    • Rik van Riel's avatar
      rmap: add exclusively owned pages to the newest anon_vma · e8a03feb
      Rik van Riel authored 
      The recent anon_vma fixes cause many anonymous pages to end up
in the parent process anon_vma, even when the page is exclusively
owned by the current process.

Adding exclusively owned anonymous pages to the top anon_vma
reduces rmap scanning overhead, especially in workloads with
forking servers.

This patch adds a parameter to __page_set_anon_rmap that can
be used to indicate whether or not the added page is exclusively
owned by the current process.

Pages added through page_add_new_anon_rmap are exclusively
owned by the current process, and can be added to the top
anon_vma.

Pages added through page_add_anon_rmap can be either shared
or exclusively owned, so we do the conservative thing and
add it to the oldest anon_vma.

A next step would be to add the exclusive parameter to
page_add_anon_rmap, to be used from functions where we do
know for sure whether a page is exclusively owned.
Signed-off-by: default avatarRik van Riel <riel@redhat.com>
Reviewed-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
Lightly-tested-by: default avatarBorislav Petkov <bp@alien8.de>
Reviewed-by: default avatarMinchan Kim <minchan.kim@gmail.com>
[ Edited to look nicer  - Linus ]
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e8a03feb
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6 · 9b030e20
      Linus Torvalds authored 
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6:
  eCryptfs: Turn lower lookup error messages into debug messages
  eCryptfs: Copy lower directory inode times and size on link
  ecryptfs: fix use with tmpfs by removing d_drop from ecryptfs_destroy_inode
  ecryptfs: fix error code for missing xattrs in lower fs
  eCryptfs: Decrypt symlink target for stat size
  eCryptfs: Strip metadata in xattr flag in encrypted view
  eCryptfs: Clear buffer before reading in metadata xattr
  eCryptfs: Rename ecryptfs_crypt_stat.num_header_bytes_at_front
  eCryptfs: Fix metadata in xattr feature regression
      9b030e20
    • Tyler Hicks's avatar
      eCryptfs: Turn lower lookup error messages into debug messages · 9f37622f
      Tyler Hicks authored 
      Vaugue warnings about ENAMETOOLONG errors when looking up an encrypted
file name have caused many users to become concerned about their data.
Since this is a rather harmless condition, I'm moving this warning to
only be printed when the ecryptfs_verbosity module param is 1.
Signed-off-by: default avatarTyler Hicks <tyhicks@linux.vnet.ibm.com>
      9f37622f
    • Tyler Hicks's avatar
      eCryptfs: Copy lower directory inode times and size on link · 3a8380c0
      Tyler Hicks authored 
      The timestamps and size of a lower inode involved in a link() call was
being copied to the upper parent inode.  Instead, we should be
copying lower parent inode's timestamps and size to the upper parent
inode.  I discovered this bug using the POSIX test suite at Tuxera.
Signed-off-by: default avatarTyler Hicks <tyhicks@linux.vnet.ibm.com>
      3a8380c0
    • Jeff Mahoney's avatar
      ecryptfs: fix use with tmpfs by removing d_drop from ecryptfs_destroy_inode · 133b8f9d
      Jeff Mahoney authored 
      Since tmpfs has no persistent storage, it pins all its dentries in memory
so they have d_count=1 when other file systems would have d_count=0.
->lookup is only used to create new dentries. If the caller doesn't
instantiate it, it's freed immediately at dput(). ->readdir reads
directly from the dcache and depends on the dentries being hashed.

When an ecryptfs mount is mounted, it associates the lower file and dentry
with the ecryptfs files as they're accessed. When it's umounted and
destroys all the in-memory ecryptfs inodes, it fput's the lower_files and
d_drop's the lower_dentries. Commit 4981e081 added this and a d_delete in
2008 and several months later commit caeeeecf removed the d_delete. I
believe the d_drop() needs to be removed as well.

The d_drop effectively hides any file that has been accessed via ecryptfs
from the underlying tmpfs since it depends on it being hashed for it to
be accessible. I've removed the d_drop on my development node and see no
ill effects with basic testing on both tmpfs and persistent storage.

As a side effect, after ecryptfs d_drops the dentries on tmpfs, tmpfs
BUGs on umount. This is due to the dentries being unhashed.
tmpfs->kill_sb is kill_litter_super which calls d_genocide to drop
the reference pinning the dentry. It skips unhashed and negative dentries,
but shrink_dcache_for_umount_subtree doesn't. Since those dentries
still have an elevated d_count, we get a BUG().

This patch removes the d_drop call and fixes both issues.

This issue was reported at:
https://bugzilla.novell.com/show_bug.cgi?id=567887Reported-by: default avatarÁrpád Bíró <biroa@demasz.hu>
Signed-off-by: default avatarJeff Mahoney <jeffm@suse.com>
Cc: Dustin Kirkland <kirkland@canonical.com>
Cc: stable@kernel.org
Signed-off-by: default avatarTyler Hicks <tyhicks@linux.vnet.ibm.com>
      133b8f9d
    • Christian Pulvermacher's avatar
      ecryptfs: fix error code for missing xattrs in lower fs · cfce08c6
      Christian Pulvermacher authored 
      If the lower file system driver has extended attributes disabled,
ecryptfs' own access functions return -ENOSYS instead of -EOPNOTSUPP.
This breaks execution of programs in the ecryptfs mount, since the
kernel expects the latter error when checking for security
capabilities in xattrs.
Signed-off-by: default avatarChristian Pulvermacher <pulvermacher@gmx.de>
Cc: stable@kernel.org
Signed-off-by: default avatarTyler Hicks <tyhicks@linux.vnet.ibm.com>
      cfce08c6
    • Tyler Hicks's avatar
      eCryptfs: Decrypt symlink target for stat size · 3a60a168
      Tyler Hicks authored 
      Create a getattr handler for eCryptfs symlinks that is capable of
reading the lower target and decrypting its path.  Prior to this patch,
a stat's st_size field would represent the strlen of the encrypted path,
while readlink() would return the strlen of the decrypted path.  This
could lead to confusion in some userspace applications, since the two
values should be equal.

https://bugs.launchpad.net/bugs/524919Reported-by: default avatarLoïc Minier <loic.minier@canonical.com>
Cc: stable@kernel.org
Signed-off-by: default avatarTyler Hicks <tyhicks@linux.vnet.ibm.com>
      3a60a168
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