Merge branch 'devel' into linux-next

1 files changed, 75 insertions, 79 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 450bfedbe2f4..025116c66fef 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1137,12 +1137,71 @@ static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
 	nfs4_state_set_mode_locked(state, state->state | fmode);
 }
 
-static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
+static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state)
+{
+	struct nfs_client *clp = state->owner->so_server->nfs_client;
+	bool need_recover = false;
+
+	if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly)
+		need_recover = true;
+	if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly)
+		need_recover = true;
+	if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr)
+		need_recover = true;
+	if (need_recover)
+		nfs4_state_mark_reclaim_nograce(clp, state);
+}
+
+static bool nfs_need_update_open_stateid(struct nfs4_state *state,
+		nfs4_stateid *stateid)
+{
+	if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0)
+		return true;
+	if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) {
+		nfs_test_and_clear_all_open_stateid(state);
+		return true;
+	}
+	if (nfs4_stateid_is_newer(stateid, &state->open_stateid))
+		return true;
+	return false;
+}
+
+static void nfs_clear_open_stateid_locked(struct nfs4_state *state,
+		nfs4_stateid *stateid, fmode_t fmode)
 {
+	clear_bit(NFS_O_RDWR_STATE, &state->flags);
+	switch (fmode & (FMODE_READ|FMODE_WRITE)) {
+	case FMODE_WRITE:
+		clear_bit(NFS_O_RDONLY_STATE, &state->flags);
+		break;
+	case FMODE_READ:
+		clear_bit(NFS_O_WRONLY_STATE, &state->flags);
+		break;
+	case 0:
+		clear_bit(NFS_O_RDONLY_STATE, &state->flags);
+		clear_bit(NFS_O_WRONLY_STATE, &state->flags);
+		clear_bit(NFS_OPEN_STATE, &state->flags);
+	}
+	if (stateid == NULL)
+		return;
+	if (!nfs_need_update_open_stateid(state, stateid))
+		return;
 	if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
 		nfs4_stateid_copy(&state->stateid, stateid);
 	nfs4_stateid_copy(&state->open_stateid, stateid);
-	set_bit(NFS_OPEN_STATE, &state->flags);
+}
+
+static void nfs_clear_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
+{
+	write_seqlock(&state->seqlock);
+	nfs_clear_open_stateid_locked(state, stateid, fmode);
+	write_sequnlock(&state->seqlock);
+	if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags))
+		nfs4_schedule_state_manager(state->owner->so_server->nfs_client);
+}
+
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
+{
 	switch (fmode) {
 		case FMODE_READ:
 			set_bit(NFS_O_RDONLY_STATE, &state->flags);
@@ -1153,13 +1212,11 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
 		case FMODE_READ|FMODE_WRITE:
 			set_bit(NFS_O_RDWR_STATE, &state->flags);
 	}
-}
-
-static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
-{
-	write_seqlock(&state->seqlock);
-	nfs_set_open_stateid_locked(state, stateid, fmode);
-	write_sequnlock(&state->seqlock);
+	if (!nfs_need_update_open_stateid(state, stateid))
+		return;
+	if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
+		nfs4_stateid_copy(&state->stateid, stateid);
+	nfs4_stateid_copy(&state->open_stateid, stateid);
 }
 
 static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
@@ -1217,6 +1274,8 @@ no_delegation:
 		__update_open_stateid(state, open_stateid, NULL, fmode);
 		ret = 1;
 	}
+	if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags))
+		nfs4_schedule_state_manager(state->owner->so_server->nfs_client);
 
 	return ret;
 }
@@ -1450,12 +1509,15 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
 	struct nfs4_state *newstate;
 	int ret;
 
+	/* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
+	clear_bit(NFS_O_RDWR_STATE, &state->flags);
+	clear_bit(NFS_O_WRONLY_STATE, &state->flags);
+	clear_bit(NFS_O_RDONLY_STATE, &state->flags);
 	/* memory barrier prior to reading state->n_* */
 	clear_bit(NFS_DELEGATED_STATE, &state->flags);
 	clear_bit(NFS_OPEN_STATE, &state->flags);
 	smp_rmb();
 	if (state->n_rdwr != 0) {
-		clear_bit(NFS_O_RDWR_STATE, &state->flags);
 		ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
 		if (ret != 0)
 			return ret;
@@ -1463,7 +1525,6 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
 			return -ESTALE;
 	}
 	if (state->n_wronly != 0) {
-		clear_bit(NFS_O_WRONLY_STATE, &state->flags);
 		ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
 		if (ret != 0)
 			return ret;
@@ -1471,7 +1532,6 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
 			return -ESTALE;
 	}
 	if (state->n_rdonly != 0) {
-		clear_bit(NFS_O_RDONLY_STATE, &state->flags);
 		ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
 		if (ret != 0)
 			return ret;
@@ -2479,26 +2539,6 @@ static void nfs4_free_closedata(void *data)
 	kfree(calldata);
 }
 
-static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
-		fmode_t fmode)
-{
-	spin_lock(&state->owner->so_lock);
-	clear_bit(NFS_O_RDWR_STATE, &state->flags);
-	switch (fmode & (FMODE_READ|FMODE_WRITE)) {
-	case FMODE_WRITE:
-		clear_bit(NFS_O_RDONLY_STATE, &state->flags);
-		break;
-	case FMODE_READ:
-		clear_bit(NFS_O_WRONLY_STATE, &state->flags);
-		break;
-	case 0:
-		clear_bit(NFS_O_RDONLY_STATE, &state->flags);
-		clear_bit(NFS_O_WRONLY_STATE, &state->flags);
-		clear_bit(NFS_OPEN_STATE, &state->flags);
-	}
-	spin_unlock(&state->owner->so_lock);
-}
-
 static void nfs4_close_done(struct rpc_task *task, void *data)
 {
 	struct nfs4_closedata *calldata = data;
@@ -2517,9 +2557,9 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
 			if (calldata->roc)
 				pnfs_roc_set_barrier(state->inode,
 						     calldata->roc_barrier);
-			nfs_set_open_stateid(state, &calldata->res.stateid, 0);
+			nfs_clear_open_stateid(state, &calldata->res.stateid, 0);
 			renew_lease(server, calldata->timestamp);
-			break;
+			goto out_release;
 		case -NFS4ERR_ADMIN_REVOKED:
 		case -NFS4ERR_STALE_STATEID:
 		case -NFS4ERR_OLD_STATEID:
@@ -2533,7 +2573,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
 				goto out_release;
 			}
 	}
-	nfs4_close_clear_stateid_flags(state, calldata->arg.fmode);
+	nfs_clear_open_stateid(state, NULL, calldata->arg.fmode);
 out_release:
 	nfs_release_seqid(calldata->arg.seqid);
 	nfs_refresh_inode(calldata->inode, calldata->res.fattr);
@@ -3507,49 +3547,6 @@ static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
 	return 1;
 }
 
-static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
-		struct inode *new_dir, struct qstr *new_name)
-{
-	struct nfs_server *server = NFS_SERVER(old_dir);
-	struct nfs_renameargs arg = {
-		.old_dir = NFS_FH(old_dir),
-		.new_dir = NFS_FH(new_dir),
-		.old_name = old_name,
-		.new_name = new_name,
-	};
-	struct nfs_renameres res = {
-		.server = server,
-	};
-	struct rpc_message msg = {
-		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
-		.rpc_argp = &arg,
-		.rpc_resp = &res,
-	};
-	int status = -ENOMEM;
-
-	status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
-	if (!status) {
-		update_changeattr(old_dir, &res.old_cinfo);
-		update_changeattr(new_dir, &res.new_cinfo);
-	}
-	return status;
-}
-
-static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
-		struct inode *new_dir, struct qstr *new_name)
-{
-	struct nfs4_exception exception = { };
-	int err;
-	do {
-		err = _nfs4_proc_rename(old_dir, old_name,
-					new_dir, new_name);
-		trace_nfs4_rename(old_dir, old_name, new_dir, new_name, err);
-		err = nfs4_handle_exception(NFS_SERVER(old_dir), err,
-				&exception);
-	} while (exception.retry);
-	return err;
-}
-
 static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
 {
 	struct nfs_server *server = NFS_SERVER(inode);
@@ -8408,7 +8405,6 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
 	.unlink_setup	= nfs4_proc_unlink_setup,
 	.unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare,
 	.unlink_done	= nfs4_proc_unlink_done,
-	.rename		= nfs4_proc_rename,
 	.rename_setup	= nfs4_proc_rename_setup,
 	.rename_rpc_prepare = nfs4_proc_rename_rpc_prepare,
 	.rename_done	= nfs4_proc_rename_done,