eCryptfs: Make truncate path killable

[Colin Ian King]

Natty SRU:

SRU justification:

Impact:

ecryptfs_write() does not detect a pending fatal signal which means
write operations cannot be interrupted which is problematic when
truncating a file to several GB as one has to wait for this operation
to complete.

Fix:

Upstream commit 5e6f0d769017cc49207ef56996e42363ec26c1f0

Testcase:

Truncating a non-existent file to several GB and sending it
SIGINT will not respond until complete which can take a long
time on a slow device. With this fix, SIGINT is far more
responsive as expected.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 947270

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Colin Ian King (colin-king)]

verified on 2.6.38-14.58 -proposed with ext2, ext3, ext4, xfs, btrfs lower file systems.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 2.6.38-14.58

---------------
linux (2.6.38-14.58) natty-proposed; urgency=low

  [Luis Henriques]

  * Release Tracking Bug
    - LP: #965346

  [ Andy Whitcroft ]

  * [Config] restore build-% shortcut

  [ Upstream Kernel Changes ]

  * eCryptfs: Make truncate path killable
    - LP: #947270
  * bsg: fix sysfs link remove warning
    - LP: #946928
  * regset: Prevent null pointer reference on readonly regsets
    - LP: #949905
    - CVE-2012-1097
  * regset: Return -EFAULT, not -EIO, on host-side memory fault
    - LP: #949905
    - CVE-2012-1097
  * mm: memcg: Correct unregistring of events attached to the same eventfd
    - LP: #952828
    - CVE-2012-1146
  * KVM: Remove ability to assign a device without iommu support
    - LP: #897812
    - CVE-2011-4347
  * eCryptfs: Copy up lower inode attrs after setting lower xattr
  * eCryptfs: Handle failed metadata read in lookup
    - LP: #509180
  * eCryptfs: Improve statfs reporting
    - LP: #885744
  * KVM: x86: extend "struct x86_emulate_ops" with "get_cpuid"
    - LP: #917842
    - CVE-2012-0045
  * KVM: x86: fix missing checks in syscall emulation
    - LP: #917842
    - CVE-2012-0045
 -- Luis Henriques <email address hidden> Mon, 26 Mar 2012 15:28:22 +0100