| commit | 5adcee1d8d32d7f305f6f5aaefdbf8f35adca177 | [log] [tgz] |
|---|---|---|
| author | Nick Piggin <npiggin@kernel.dk> | Fri Jan 07 17:49:20 2011 +1100 |
| committer | Nick Piggin <npiggin@kernel.dk> | Fri Jan 07 17:50:17 2011 +1100 |
| tree | 9292ebc9bb6a21b364a97a44d1b6857a565159c5 | |
| parent | 3e880fb5e4bb6a012035e3edd0586ee2817c2e24 [diff] |
cgroup fs: avoid switching ->d_op on live dentry Switching d_op on a live dentry is racy in general, so avoid it. In this case it is a negative dentry, which is safer, but there are still concurrent ops which may be called on d_op in that case (eg. d_revalidate). So in general a filesystem may not do this. Fix cgroupfs so as not to do this. Signed-off-by: Nick Piggin <npiggin@kernel.dk>