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-rw-r--r--fs/nfs/delegation.c38
-rw-r--r--fs/nfs/delegation.h1
-rw-r--r--fs/nfs/nfs4proc.c18
3 files changed, 55 insertions, 2 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 44135af..3976c17 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -31,11 +31,42 @@ static void nfs_free_delegation(struct nfs_delegation *delegation)
kfree(delegation);
}
+static int nfs_delegation_claim_locks(struct nfs_open_context *ctx, struct nfs4_state *state)
+{
+ struct inode *inode = state->inode;
+ struct file_lock *fl;
+ int status;
+
+ for (fl = inode->i_flock; fl != 0; fl = fl->fl_next) {
+ if (!(fl->fl_flags & (FL_POSIX|FL_FLOCK)))
+ continue;
+ if ((struct nfs_open_context *)fl->fl_file->private_data != ctx)
+ continue;
+ status = nfs4_lock_delegation_recall(state, fl);
+ if (status >= 0)
+ continue;
+ switch (status) {
+ default:
+ printk(KERN_ERR "%s: unhandled error %d.\n",
+ __FUNCTION__, status);
+ case -NFS4ERR_EXPIRED:
+ /* kill_proc(fl->fl_pid, SIGLOST, 1); */
+ case -NFS4ERR_STALE_CLIENTID:
+ nfs4_schedule_state_recovery(NFS_SERVER(inode)->nfs4_state);
+ goto out_err;
+ }
+ }
+ return 0;
+out_err:
+ return status;
+}
+
static void nfs_delegation_claim_opens(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_context *ctx;
struct nfs4_state *state;
+ int err;
again:
spin_lock(&inode->i_lock);
@@ -47,9 +78,12 @@ again:
continue;
get_nfs_open_context(ctx);
spin_unlock(&inode->i_lock);
- if (nfs4_open_delegation_recall(ctx->dentry, state) < 0)
- return;
+ err = nfs4_open_delegation_recall(ctx->dentry, state);
+ if (err >= 0)
+ err = nfs_delegation_claim_locks(ctx, state);
put_nfs_open_context(ctx);
+ if (err != 0)
+ return;
goto again;
}
spin_unlock(&inode->i_lock);
diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index 8017846..2fcc30d 100644
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -38,6 +38,7 @@ void nfs_delegation_reap_unclaimed(struct nfs4_client *clp);
/* NFSv4 delegation-related procedures */
int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid);
int nfs4_open_delegation_recall(struct dentry *dentry, struct nfs4_state *state);
+int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl);
static inline int nfs_have_delegation(struct inode *inode, int flags)
{
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 54ff465..e6a9322 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3124,6 +3124,24 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
return status;
}
+int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
+{
+ struct nfs_server *server = NFS_SERVER(state->inode);
+ struct nfs4_exception exception = { };
+ int err;
+
+ err = nfs4_set_lock_state(state, fl);
+ if (err != 0)
+ goto out;
+ do {
+ err = _nfs4_do_setlk(state, F_SETLK, fl, 0);
+ if (err != -NFS4ERR_DELAY)
+ break;
+ err = nfs4_handle_exception(server, err, &exception);
+ } while (exception.retry);
+out:
+ return err;
+}
#define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"