diff options
| author | Tejun Heo <tj@kernel.org> | 2014-02-11 11:52:49 -0500 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2014-02-11 11:52:49 -0500 |
| commit | b1664924062393bb048203bd4622e0b1c9e1d328 (patch) | |
| tree | 4fbbb4a62793e72d9dbe44c71db0ea75f54cc21b /kernel/cgroup.c | |
| parent | 2da440a26ce4743bd3e71ba964ba3f983d09bba5 (diff) | |
| download | linux-b1664924062393bb048203bd4622e0b1c9e1d328.tar.bz2 | |
cgroup: introduce cgroup_ino()
mm/memory-failure.c::hwpoison_filter_task() has been reaching into
cgroup to extract the associated ino to be used as a filtering
criterion. This is an implementation detail which shouldn't be
depended upon from outside cgroup proper and is about to change with
the scheduled kernfs conversion.
This patch introduces a proper interface to determine the associated
ino, cgroup_ino(), and updates hwpoison_filter_task() to use it
instead of reaching directly into cgroup.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 42e588ef62d1..11f7a05e791e 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -792,7 +792,10 @@ static struct inode *cgroup_new_inode(umode_t mode, struct super_block *sb) struct inode *inode = new_inode(sb); if (inode) { - inode->i_ino = get_next_ino(); + do { + /* ino 0 is reserved for dummy_root */ + inode->i_ino = get_next_ino(); + } while (!inode->i_ino); inode->i_mode = mode; inode->i_uid = current_fsuid(); inode->i_gid = current_fsgid(); |