NFSv4.1 cleanup filelayout invalid layout handling

The invalid layout bits are should only be used to block LAYOUTGETs.

Do not invalidate a layout on deviceid invalidation.
Do not invalidate a layout on un-handled READ, WRITE, COMMIT errors.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index eebec9a..b9edc88 100644 (file)
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -148,7 +148,6 @@ wait_on_recovery:
 static int filelayout_read_done_cb(struct rpc_task *task,
                                struct nfs_read_data *data)
 {
-       struct nfs_pgio_header *hdr = data->header;
        int reset = 0;
 
        dprintk("%s DS read\n", __func__);
@@ -157,10 +156,8 @@ static int filelayout_read_done_cb(struct rpc_task *task,
                                          data->ds_clp, &reset) == -EAGAIN) {
                dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
                        __func__, data->ds_clp, data->ds_clp->cl_session);
-               if (reset) {
-                       pnfs_set_lo_fail(hdr->lseg);
+               if (reset)
                        nfs4_reset_read(task, data);
-               }
                rpc_restart_call_prepare(task);
                return -EAGAIN;
        }
@@ -233,17 +230,14 @@ static void filelayout_read_release(void *data)
 static int filelayout_write_done_cb(struct rpc_task *task,
                                struct nfs_write_data *data)
 {
-       struct nfs_pgio_header *hdr = data->header;
        int reset = 0;
 
        if (filelayout_async_handle_error(task, data->args.context->state,
                                          data->ds_clp, &reset) == -EAGAIN) {
                dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
                        __func__, data->ds_clp, data->ds_clp->cl_session);
-               if (reset) {
-                       pnfs_set_lo_fail(hdr->lseg);
+               if (reset)
                        nfs4_reset_write(task, data);
-               }
                rpc_restart_call_prepare(task);
                return -EAGAIN;
        }
@@ -272,10 +266,9 @@ static int filelayout_commit_done_cb(struct rpc_task *task,
                                          data->ds_clp, &reset) == -EAGAIN) {
                dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
                        __func__, data->ds_clp, data->ds_clp->cl_session);
-               if (reset) {
+               if (reset)
                        prepare_to_resend_writes(data);
-                       pnfs_set_lo_fail(data->lseg);
-               } else
+               else
                        rpc_restart_call_prepare(task);
                return -EAGAIN;
        }
@@ -393,12 +386,8 @@ filelayout_read_pagelist(struct nfs_read_data *data)
        j = nfs4_fl_calc_j_index(lseg, offset);
        idx = nfs4_fl_calc_ds_index(lseg, j);
        ds = nfs4_fl_prepare_ds(lseg, idx);
-       if (!ds) {
-               /* Either layout fh index faulty, or ds connect failed */
-               set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags);
-               set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags);
+       if (!ds)
                return PNFS_NOT_ATTEMPTED;
-       }
        dprintk("%s USE DS: %s\n", __func__, ds->ds_remotestr);
 
        /* No multipath support. Use first DS */
@@ -433,11 +422,8 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync)
        j = nfs4_fl_calc_j_index(lseg, offset);
        idx = nfs4_fl_calc_ds_index(lseg, j);
        ds = nfs4_fl_prepare_ds(lseg, idx);
-       if (!ds) {
-               set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags);
-               set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags);
+       if (!ds)
                return PNFS_NOT_ATTEMPTED;
-       }
        dprintk("%s ino %lu sync %d req %Zu@%llu DS: %s\n", __func__,
                hdr->inode->i_ino, sync, (size_t) data->args.count, offset,
                ds->ds_remotestr);
@@ -969,8 +955,6 @@ static int filelayout_initiate_commit(struct nfs_commit_data *data, int how)
        idx = calc_ds_index_from_commit(lseg, data->ds_commit_index);
        ds = nfs4_fl_prepare_ds(lseg, idx);
        if (!ds) {
-               set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags);
-               set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags);
                prepare_to_resend_writes(data);
                filelayout_commit_release(data);
                return -EAGAIN;