diff options
| -rw-r--r-- | fs/nfs/nfs4filelayout.c | 10 | ||||
| -rw-r--r-- | fs/nfs/nfs4filelayout.h | 6 | ||||
| -rw-r--r-- | fs/nfs/pnfs.c | 3 | ||||
| -rw-r--r-- | fs/nfs/pnfs.h | 8 | ||||
| -rw-r--r-- | fs/nfs/pnfs_dev.c | 20 |
5 files changed, 47 insertions, 0 deletions
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 51c1909..af9bf9e 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -334,6 +334,9 @@ filelayout_read_pagelist(struct nfs_read_data *data) __func__, data->inode->i_ino, data->args.pgbase, (size_t)data->args.count, offset); + if (test_bit(NFS_DEVICEID_INVALID, &FILELAYOUT_DEVID_NODE(lseg)->flags)) + return PNFS_NOT_ATTEMPTED; + /* Retrieve the correct rpc_client for the byte range */ j = nfs4_fl_calc_j_index(lseg, offset); idx = nfs4_fl_calc_ds_index(lseg, j); @@ -373,6 +376,9 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync) struct nfs_fh *fh; int status; + if (test_bit(NFS_DEVICEID_INVALID, &FILELAYOUT_DEVID_NODE(lseg)->flags)) + return PNFS_NOT_ATTEMPTED; + /* Retrieve the correct rpc_client for the byte range */ j = nfs4_fl_calc_j_index(lseg, offset); idx = nfs4_fl_calc_ds_index(lseg, j); @@ -456,6 +462,10 @@ filelayout_check_layout(struct pnfs_layout_hdr *lo, goto out; } else dsaddr = container_of(d, struct nfs4_file_layout_dsaddr, id_node); + /* Found deviceid is being reaped */ + if (test_bit(NFS_DEVICEID_INVALID, &dsaddr->id_node.flags)) + goto out_put; + fl->dsaddr = dsaddr; if (fl->first_stripe_index < 0 || diff --git a/fs/nfs/nfs4filelayout.h b/fs/nfs/nfs4filelayout.h index 68cce73..2e42284 100644 --- a/fs/nfs/nfs4filelayout.h +++ b/fs/nfs/nfs4filelayout.h @@ -96,6 +96,12 @@ FILELAYOUT_LSEG(struct pnfs_layout_segment *lseg) generic_hdr); } +static inline struct nfs4_deviceid_node * +FILELAYOUT_DEVID_NODE(struct pnfs_layout_segment *lseg) +{ + return &FILELAYOUT_LSEG(lseg)->dsaddr->id_node; +} + extern struct nfs_fh * nfs4_fl_select_ds_fh(struct pnfs_layout_segment *lseg, u32 j); diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 5fc2e5d..5b3cc3f 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -452,6 +452,9 @@ pnfs_destroy_all_layouts(struct nfs_client *clp) struct pnfs_layout_hdr *lo; LIST_HEAD(tmp_list); + nfs4_deviceid_mark_client_invalid(clp); + nfs4_deviceid_purge_client(clp); + spin_lock(&clp->cl_lock); rcu_read_lock(); list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 678c4c7..a59736e 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -192,12 +192,20 @@ struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, enum pnfs_iomode iomode, gfp_t gfp_flags); +void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); + +/* nfs4_deviceid_flags */ +enum { + NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */ +}; + /* pnfs_dev.c */ struct nfs4_deviceid_node { struct hlist_node node; struct hlist_node tmpnode; const struct pnfs_layoutdriver_type *ld; const struct nfs_client *nfs_client; + unsigned long flags; struct nfs4_deviceid deviceid; atomic_t ref; }; diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c index fb9498d..6fda522 100644 --- a/fs/nfs/pnfs_dev.c +++ b/fs/nfs/pnfs_dev.c @@ -156,6 +156,7 @@ nfs4_init_deviceid_node(struct nfs4_deviceid_node *d, INIT_HLIST_NODE(&d->tmpnode); d->ld = ld; d->nfs_client = nfs_client; + d->flags = 0; d->deviceid = *id; atomic_set(&d->ref, 1); } @@ -253,3 +254,22 @@ nfs4_deviceid_purge_client(const struct nfs_client *clp) for (h = 0; h < NFS4_DEVICE_ID_HASH_SIZE; h++) _deviceid_purge_client(clp, h); } + +/* + * Stop use of all deviceids associated with an nfs_client + */ +void +nfs4_deviceid_mark_client_invalid(struct nfs_client *clp) +{ + struct nfs4_deviceid_node *d; + struct hlist_node *n; + int i; + + rcu_read_lock(); + for (i = 0; i < NFS4_DEVICE_ID_HASH_SIZE; i ++){ + hlist_for_each_entry_rcu(d, n, &nfs4_deviceid_cache[i], node) + if (d->nfs_client == clp) + set_bit(NFS_DEVICEID_INVALID, &d->flags); + } + rcu_read_unlock(); +} |