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-rw-r--r--fs/nfsd/nfs4layouts.c25
-rw-r--r--fs/nfsd/nfs4proc.c4
-rw-r--r--fs/nfsd/state.h1
3 files changed, 26 insertions, 4 deletions
diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c
index ebf90e487c75..4a68ab901b4b 100644
--- a/fs/nfsd/nfs4layouts.c
+++ b/fs/nfsd/nfs4layouts.c
@@ -201,6 +201,7 @@ nfsd4_alloc_layout_stateid(struct nfsd4_compound_state *cstate,
INIT_LIST_HEAD(&ls->ls_perfile);
spin_lock_init(&ls->ls_lock);
INIT_LIST_HEAD(&ls->ls_layouts);
+ mutex_init(&ls->ls_mutex);
ls->ls_layout_type = layout_type;
nfsd4_init_cb(&ls->ls_recall, clp, &nfsd4_cb_layout_ops,
NFSPROC4_CLNT_CB_LAYOUT);
@@ -262,19 +263,23 @@ nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp,
status = nfserr_jukebox;
if (!ls)
goto out;
+ mutex_lock(&ls->ls_mutex);
} else {
ls = container_of(stid, struct nfs4_layout_stateid, ls_stid);
status = nfserr_bad_stateid;
+ mutex_lock(&ls->ls_mutex);
if (stateid->si_generation > stid->sc_stateid.si_generation)
- goto out_put_stid;
+ goto out_unlock_stid;
if (layout_type != ls->ls_layout_type)
- goto out_put_stid;
+ goto out_unlock_stid;
}
*lsp = ls;
return 0;
+out_unlock_stid:
+ mutex_unlock(&ls->ls_mutex);
out_put_stid:
nfs4_put_stid(stid);
out:
@@ -296,8 +301,6 @@ nfsd4_recall_file_layout(struct nfs4_layout_stateid *ls)
trace_layout_recall(&ls->ls_stid.sc_stateid);
atomic_inc(&ls->ls_stid.sc_count);
- update_stateid(&ls->ls_stid.sc_stateid);
- memcpy(&ls->ls_recall_sid, &ls->ls_stid.sc_stateid, sizeof(stateid_t));
nfsd4_run_cb(&ls->ls_recall);
out_unlock:
@@ -494,6 +497,7 @@ nfsd4_return_file_layouts(struct svc_rqst *rqstp,
}
spin_unlock(&ls->ls_lock);
+ mutex_unlock(&ls->ls_mutex);
nfs4_put_stid(&ls->ls_stid);
nfsd4_free_layouts(&reaplist);
return nfs_ok;
@@ -608,6 +612,17 @@ nfsd4_cb_layout_fail(struct nfs4_layout_stateid *ls)
}
}
+static void
+nfsd4_cb_layout_prepare(struct nfsd4_callback *cb)
+{
+ struct nfs4_layout_stateid *ls =
+ container_of(cb, struct nfs4_layout_stateid, ls_recall);
+
+ mutex_lock(&ls->ls_mutex);
+ update_stateid(&ls->ls_stid.sc_stateid);
+ memcpy(&ls->ls_recall_sid, &ls->ls_stid.sc_stateid, sizeof(stateid_t));
+}
+
static int
nfsd4_cb_layout_done(struct nfsd4_callback *cb, struct rpc_task *task)
{
@@ -649,12 +664,14 @@ nfsd4_cb_layout_release(struct nfsd4_callback *cb)
trace_layout_recall_release(&ls->ls_stid.sc_stateid);
+ mutex_unlock(&ls->ls_mutex);
nfsd4_return_all_layouts(ls, &reaplist);
nfsd4_free_layouts(&reaplist);
nfs4_put_stid(&ls->ls_stid);
}
static struct nfsd4_callback_ops nfsd4_cb_layout_ops = {
+ .prepare = nfsd4_cb_layout_prepare,
.done = nfsd4_cb_layout_done,
.release = nfsd4_cb_layout_release,
};
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 4ce6b97b31ad..a9f096c7e99f 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1309,6 +1309,7 @@ nfsd4_layoutget(struct svc_rqst *rqstp,
nfserr = nfsd4_insert_layout(lgp, ls);
out_put_stid:
+ mutex_unlock(&ls->ls_mutex);
nfs4_put_stid(&ls->ls_stid);
out:
return nfserr;
@@ -1362,6 +1363,9 @@ nfsd4_layoutcommit(struct svc_rqst *rqstp,
goto out;
}
+ /* LAYOUTCOMMIT does not require any serialization */
+ mutex_unlock(&ls->ls_mutex);
+
if (new_size > i_size_read(inode)) {
lcp->lc_size_chg = 1;
lcp->lc_newsize = new_size;
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 31bde12feefe..1fa0f3848d4e 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -562,6 +562,7 @@ struct nfs4_layout_stateid {
struct nfsd4_callback ls_recall;
stateid_t ls_recall_sid;
bool ls_recalled;
+ struct mutex ls_mutex;
};
static inline struct nfs4_layout_stateid *layoutstateid(struct nfs4_stid *s)