fs: dcache rationalise dget variants

dget_locked was a shortcut to avoid the lazy lru manipulation when we already
held dcache_lock (lru manipulation was relatively cheap at that point).
However, how that the lru lock is an innermost one, we never hold it at any
caller, so the lock cost can now be avoided. We already have well working lazy
dcache LRU, so it should be fine to defer LRU manipulations to scan time.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 1864cb6a6a59..9f41470c3949 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -887,7 +887,7 @@ static void cgroup_clear_directory(struct dentry *dentry)
                         /* This should never be called on a cgroup
                          * directory with child cgroups */
                         BUG_ON(d->d_inode->i_mode & S_IFDIR);
-                        dget_locked_dlock(d);
+                        dget_dlock(d);
                         spin_unlock(&d->d_lock);
                         spin_unlock(&dentry->d_lock);
                         d_delete(d);