linux-kernel - [PATCH 0/4 V2] Avoid quadratic search when freeing delegations

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Date:   Mon, 30 Apr 2018 14:31:30 +1000
From:   NeilBrown <neilb@...e.com>
To:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Trond Myklebust <trond.myklebust@...marydata.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Anna Schumaker <anna.schumaker@...app.com>
Cc:     linux-nfs@...r.kernel.org, Lai Jiangshan <jiangshanlai@...il.com>,
        Josh Triplett <josh@...htriplett.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/4 V2] Avoid quadratic search when freeing delegations

Following review from Mathieu (thanks) I've made some revisions
and split this into four patches.  The RCU change is now in patch 3
by itself.
I've also revised the description in the main (final) patch quite
a bit.

Thanks,
NeilBrown


---

NeilBrown (4):
      NFS: slight optimization for walking list for delegations
      NFS: use cond_resched() when restarting walk of delegation list.
      rculist: add list_for_each_entry_from_rcu()
      NFS: Avoid quadratic search when freeing delegations.


 fs/nfs/delegation.c     |   66 ++++++++++++++++++++++++++++++++++++++++++-----
 include/linux/rculist.h |   13 +++++++++
 2 files changed, 72 insertions(+), 7 deletions(-)

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