From: Jeff Layton <jlayton@primarydata.com>
To: bfields@fieldses.org
Cc: linux-nfs@vger.kernel.org, hch@infradead.org,
Trond Myklebust <trond.myklebust@primarydata.com>
Subject: [PATCH v3 12/38] nfsd: Ensure that nfs4_open_delegation() references the delegation stateid
Date: Tue, 29 Jul 2014 21:34:17 -0400 [thread overview]
Message-ID: <1406684083-19736-13-git-send-email-jlayton@primarydata.com> (raw)
In-Reply-To: <1406684083-19736-1-git-send-email-jlayton@primarydata.com>
From: Trond Myklebust <trond.myklebust@primarydata.com>
Ensure that nfs4_open_delegation() keeps a reference to the delegation
stateid until it is done working with it. Necessary step toward
client_mutex removal.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
fs/nfsd/nfs4state.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 4f191456d737..2df6af93120e 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -674,6 +674,7 @@ hash_delegation_locked(struct nfs4_delegation *dp, struct nfs4_file *fp)
lockdep_assert_held(&state_lock);
lockdep_assert_held(&fp->fi_lock);
+ atomic_inc(&dp->dl_stid.sc_count);
dp->dl_stid.sc_type = NFS4_DELEG_STID;
list_add(&dp->dl_perfile, &fp->fi_delegations);
list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations);
@@ -3704,6 +3705,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open,
dprintk("NFSD: delegation stateid=" STATEID_FMT "\n",
STATEID_VAL(&dp->dl_stid.sc_stateid));
open->op_delegate_type = NFS4_OPEN_DELEGATE_READ;
+ nfs4_put_stid(&dp->dl_stid);
return;
out_no_deleg:
open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE;
--
1.9.3
next prev parent reply other threads:[~2014-07-30 1:35 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-30 1:34 [PATCH v3 00/38] nfsd: stateid and stateowner refcounting overhaul Jeff Layton
2014-07-30 1:34 ` [PATCH v3 01/38] nfsd: Add reference counting to the lock and open stateids Jeff Layton
2014-07-30 1:34 ` [PATCH v3 02/38] nfsd: Cleanup the freeing of stateids Jeff Layton
2014-07-30 20:57 ` Christoph Hellwig
2014-07-31 16:50 ` J. Bruce Fields
2014-07-30 1:34 ` [PATCH v3 03/38] nfsd: Add a struct nfs4_file field to struct nfs4_stid Jeff Layton
2014-07-30 1:34 ` [PATCH v3 04/38] nfsd: Replace nfs4_ol_stateid->st_file with the st_stid.sc_file Jeff Layton
2014-07-30 20:59 ` Christoph Hellwig
2014-07-31 16:52 ` J. Bruce Fields
2014-07-30 1:34 ` [PATCH v3 05/38] nfsd4: use cl_lock to synchronize all stateid idr calls Jeff Layton
2014-07-30 20:59 ` Christoph Hellwig
2014-07-30 1:34 ` [PATCH v3 06/38] nfsd: do filp_close in sc_free callback for lock stateids Jeff Layton
2014-07-30 21:08 ` Christoph Hellwig
2014-07-30 1:34 ` [PATCH v3 07/38] nfsd: Add locking to protect the state owner lists Jeff Layton
2014-07-30 1:34 ` [PATCH v3 08/38] nfsd: clean up races in lock stateid searching and creation Jeff Layton
2014-07-30 1:34 ` [PATCH v3 09/38] nfsd: ensure atomicity in nfsd4_free_stateid and nfsd4_validate_stateid Jeff Layton
2014-07-30 1:34 ` [PATCH v3 10/38] nfsd: Add reference counting to lock stateids Jeff Layton
2014-07-30 1:34 ` [PATCH v3 11/38] nfsd: nfsd4_locku() must reference the lock stateid Jeff Layton
2014-07-30 1:34 ` Jeff Layton [this message]
2014-07-30 1:34 ` [PATCH v3 13/38] nfsd: nfsd4_process_open2() must reference the delegation stateid Jeff Layton
2014-07-30 1:34 ` [PATCH v3 14/38] nfsd: nfsd4_process_open2() must reference the open stateid Jeff Layton
2014-07-30 1:34 ` [PATCH v3 15/38] nfsd: Prepare nfsd4_close() for open stateid referencing Jeff Layton
2014-07-30 1:34 ` [PATCH v3 16/38] nfsd: nfsd4_open_confirm() must reference the open stateid Jeff Layton
2014-07-30 1:34 ` [PATCH v3 17/38] nfsd: Add reference counting to nfs4_preprocess_confirmed_seqid_op Jeff Layton
2014-07-30 1:34 ` [PATCH v3 18/38] nfsd: Migrate the stateid reference into nfs4_preprocess_seqid_op Jeff Layton
2014-07-30 1:34 ` [PATCH v3 19/38] nfsd: Migrate the stateid reference into nfs4_lookup_stateid() Jeff Layton
2014-07-30 1:34 ` [PATCH v3 20/38] nfsd: Migrate the stateid reference into nfs4_find_stateid_by_type() Jeff Layton
2014-07-31 20:04 ` J. Bruce Fields
2014-07-30 1:34 ` [PATCH v3 21/38] nfsd: Add reference counting to state owners Jeff Layton
2014-08-01 16:48 ` J. Bruce Fields
2014-08-01 16:52 ` Jeff Layton
2014-07-30 1:34 ` [PATCH v3 22/38] nfsd: Add a mutex to protect the NFSv4.0 open owner replay cache Jeff Layton
2014-07-30 1:34 ` [PATCH v3 23/38] nfsd: clean up lockowner refcounting when finding them Jeff Layton
2014-07-30 1:34 ` [PATCH v3 24/38] nfsd: add an operation for unhashing a stateowner Jeff Layton
2014-07-30 1:34 ` [PATCH v3 25/38] nfsd: Make lock stateid take a reference to the lockowner Jeff Layton
2014-07-30 1:34 ` [PATCH v3 26/38] nfsd: clean up refcounting for lockowners Jeff Layton
2014-07-30 1:34 ` [PATCH v3 27/38] nfsd: make openstateids hold references to their openowners Jeff Layton
2014-08-01 19:29 ` J. Bruce Fields
2014-07-30 1:34 ` [PATCH v3 28/38] nfsd: don't allow CLOSE to proceed until refcount on stateid drops Jeff Layton
2014-07-30 1:34 ` [PATCH v3 29/38] nfsd: Protect adding/removing open state owners using client_lock Jeff Layton
2014-07-30 1:34 ` [PATCH v3 30/38] nfsd: Protect adding/removing lock " Jeff Layton
2014-08-01 19:44 ` J. Bruce Fields
2014-07-30 1:34 ` [PATCH v3 31/38] nfsd: Move the open owner hash table into struct nfs4_client Jeff Layton
2014-08-02 10:39 ` Kinglong Mee
2014-08-02 13:11 ` Trond Myklebust
2014-08-02 13:23 ` Jeff Layton
2014-08-02 13:51 ` Kinglong Mee
2014-08-02 13:43 ` Kinglong Mee
2014-08-02 14:05 ` Trond Myklebust
2014-08-02 14:20 ` Kinglong Mee
2014-08-02 14:47 ` Trond Myklebust
2014-08-02 22:59 ` Jeff Layton
2014-08-03 1:59 ` Trond Myklebust
[not found] ` <CAPakX04ctGujqpJ48WqT1-r5=q0T8D1Ji=q1P5UTuwdw_hTsGg@mail.gmail.com>
2014-08-03 14:15 ` Kinglong Mee
2014-08-03 14:49 ` Jeff Layton
2014-08-05 18:46 ` Bruce Fields
2014-07-30 1:34 ` [PATCH v3 32/38] nfsd: clean up and reorganize release_lockowner Jeff Layton
2014-07-30 1:34 ` [PATCH v3 33/38] nfsd: add locking to stateowner release Jeff Layton
2014-07-30 1:34 ` [PATCH v3 34/38] nfsd: optimize destroy_lockowner cl_lock thrashing Jeff Layton
2014-07-30 1:34 ` [PATCH v3 35/38] nfsd: close potential race in nfsd4_free_stateid Jeff Layton
2014-07-30 1:34 ` [PATCH v3 36/38] nfsd: reduce cl_lock thrashing in release_openowner Jeff Layton
2014-07-30 1:34 ` [PATCH v3 37/38] nfsd: don't thrash the cl_lock while freeing an open stateid Jeff Layton
2014-07-30 1:34 ` [PATCH v3 38/38] nfsd: rename unhash_generic_stateid to unhash_ol_stateid Jeff Layton
2014-08-01 20:25 ` [PATCH v3 00/38] nfsd: stateid and stateowner refcounting overhaul J. Bruce Fields
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