ocfs2: punch hole should return EINVAL if the length argument in ioctl is negative
An unreserve space ioctl OCFS2_IOC_UNRESVSP/64 should reject a negative length. Orabug:14789508 Signed-off-by: Tariq Saseed <tariq.x.saeed@oracle.com> Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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