This is a note to let you know that I've just added the patch titled
ceph: wake up 'safe' waiters when unregistering request
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ceph-wake-up-safe-waiters-when-unregistering-request.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fc55d2c9448b34218ca58733a6f51fbede09575b Mon Sep 17 00:00:00 2001
From: "Yan, Zheng" <zheng.z.yan@xxxxxxxxx>
Date: Thu, 31 Oct 2013 09:10:47 +0800
Subject: ceph: wake up 'safe' waiters when unregistering request
From: "Yan, Zheng" <zheng.z.yan@xxxxxxxxx>
commit fc55d2c9448b34218ca58733a6f51fbede09575b upstream.
We also need to wake up 'safe' waiters if error occurs or request
aborted. Otherwise sync(2)/fsync(2) may hang forever.
Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx>
Signed-off-by: Sage Weil <sage@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ceph/mds_client.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -609,6 +609,8 @@ static void __unregister_request(struct
req->r_unsafe_dir = NULL;
}
+ complete_all(&req->r_safe_completion);
+
ceph_mdsc_put_request(req);
}
@@ -2132,7 +2134,6 @@ static void handle_reply(struct ceph_mds
if (head->safe) {
req->r_got_safe = true;
__unregister_request(mdsc, req);
- complete_all(&req->r_safe_completion);
if (req->r_got_unsafe) {
/*
Patches currently in stable-queue which might be from zheng.z.yan@xxxxxxxxx are
queue-3.4/ceph-wake-up-safe-waiters-when-unregistering-request.patch
queue-3.4/ceph-cleanup-aborted-requests-when-re-sending-requests.patch
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