diff options
| -rw-r--r-- | fs/nfs/callback_proc.c | 2 | ||||
| -rw-r--r-- | fs/nfs/pnfs.c | 8 | ||||
| -rw-r--r-- | include/linux/nfs_fs_sb.h | 1 | ||||
| -rw-r--r-- | include/linux/nfs_xdr.h | 1 |
4 files changed, 11 insertions, 1 deletions
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index a50d7813e3ea..d561161b7c3e 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -322,6 +322,8 @@ static u32 initiate_bulk_draining(struct nfs_client *clp, static u32 do_callback_layoutrecall(struct nfs_client *clp, struct cb_layoutrecallargs *args) { + write_seqcount_begin(&clp->cl_callback_count); + write_seqcount_end(&clp->cl_callback_count); if (args->cbl_recall_type == RETURN_FILE) return initiate_file_draining(clp, args); return initiate_bulk_draining(clp, args); diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 3dfe9fa264a5..a29fdea2db91 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1017,6 +1017,7 @@ pnfs_alloc_init_layoutget_args(struct inode *ino, nfs4_stateid_copy(&lgp->args.stateid, stateid); lgp->gfp_flags = gfp_flags; lgp->cred = get_rpccred(ctx->cred); + lgp->callback_count = raw_seqcount_begin(&server->nfs_client->cl_callback_count); return lgp; } @@ -2101,6 +2102,7 @@ void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, { struct pnfs_layout_hdr *lo; struct pnfs_layout_segment *lseg; + struct nfs_server *srv = NFS_SERVER(ino); u32 iomode; if (!lgp) @@ -2116,7 +2118,7 @@ void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, /* FIXME - Any error not listed above permanently * halts lgopen attempts. */ - NFS_SERVER(ino)->caps &= ~NFS_CAP_LGOPEN; + srv->caps &= ~NFS_CAP_LGOPEN; } return; } @@ -2129,6 +2131,9 @@ void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, lo = NFS_I(lgp->args.inode)->layout; pnfs_get_layout_hdr(lo); + if (read_seqcount_retry(&srv->nfs_client->cl_callback_count, + lgp->callback_count)) + goto out; lseg = pnfs_layout_process(lgp); atomic_dec(&lo->plh_outstanding); if (IS_ERR(lseg)) { @@ -2139,6 +2144,7 @@ void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, pnfs_layout_clear_fail_bit(lo, pnfs_iomode_to_fail_bit(iomode)); pnfs_put_lseg(lseg); } +out: pnfs_clear_first_layoutget(lo); pnfs_put_layout_hdr(lo); } diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 2c18d618604e..74ae3e1d19a0 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -28,6 +28,7 @@ struct nfs41_impl_id; struct nfs_client { refcount_t cl_count; atomic_t cl_mds_count; + seqcount_t cl_callback_count; int cl_cons_state; /* current construction state (-ve: init error) */ #define NFS_CS_READY 0 /* ready to be used */ #define NFS_CS_INITING 1 /* busy initialising */ diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index bc235e50415f..09dc14ac5804 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -271,6 +271,7 @@ struct nfs4_layoutget { struct nfs4_layoutget_args args; struct nfs4_layoutget_res res; struct rpc_cred *cred; + unsigned callback_count; gfp_t gfp_flags; }; |