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| author | Nick Piggin <npiggin@suse.de> | 2010-01-29 15:38:21 -0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-04-27 17:32:31 +0200 |
| commit | 5c0eb5cec064ce26ffcd0cdd684c9b6dd7c9074e (patch) | |
| tree | b216db850b878a1c2a3bcb3d29265efc9a73b927 /kernel | |
| parent | 0bce328eda17e71b1e027bc867bef7ec08360c3d (diff) | |
| download | lwn-5c0eb5cec064ce26ffcd0cdd684c9b6dd7c9074e.tar.gz lwn-5c0eb5cec064ce26ffcd0cdd684c9b6dd7c9074e.zip | |
fs-dcache-scale-d_count
Make d_count non-atomic and protect it with d_lock. This allows us to
ensure a 0 refcount dentry remains 0 without dcache_lock. It is also
fairly natural when we start protecting many other dentry members with
d_lock.
XXX: This patch does not boot on its own
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cgroup.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 11a8b34cfae0..2524e5d657e2 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -3164,9 +3164,7 @@ again: list_del(&cgrp->sibling); cgroup_unlock_hierarchy(cgrp->root); - spin_lock(&cgrp->dentry->d_lock); d = dget(cgrp->dentry); - spin_unlock(&d->d_lock); cgroup_d_remove_dir(d); dput(d); |