diff options
| author | Davidlohr Bueso <davidlohr.bueso@hp.com> | 2013-07-08 16:01:12 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-18 07:45:46 -0700 |
| commit | ac9bc6e396285ab732dd869c3edb353662134022 (patch) | |
| tree | 182b0be2e0238d96e02c8669e372c254d6ea81a1 /mm/fremap.c | |
| parent | 115d40dbef93b70e6f32732b0fdd5903c1f7fce4 (diff) | |
ipc: move locking out of ipcctl_pre_down_nolock
commit 7b4cc5d8411bd4e9d61d8714f53859740cf830c2 upstream.
This function currently acquires both the rw_mutex and the rcu lock on
successful lookups, leaving the callers to explicitly unlock them,
creating another two level locking situation.
Make the callers (including those that still use ipcctl_pre_down())
explicitly lock and unlock the rwsem and rcu lock.
Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/fremap.c')
0 files changed, 0 insertions, 0 deletions