From: Alexandros Batsakis Subject: [PATCH 3/7] pnfs-submit: change stateid to be a union Date: Tue, 8 Jun 2010 15:14:57 -0700 Message-ID: <1276035301-2019-4-git-send-email-batsakis@netapp.com> References: <1276035301-2019-1-git-send-email-batsakis@netapp.com> <1276035301-2019-2-git-send-email-batsakis@netapp.com> <1276035301-2019-3-git-send-email-batsakis@netapp.com> Cc: bhalevy@panasas.com, Alexandros Batsakis To: linux-nfs@vger.kernel.org Return-path: Received: from mx2.netapp.com ([216.240.18.37]:48250 "EHLO mx2.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932087Ab0FHWOu (ORCPT ); Tue, 8 Jun 2010 18:14:50 -0400 In-Reply-To: <1276035301-2019-3-git-send-email-batsakis@netapp.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: In NFSv4.1 the stateid consists of the other and seqid fields. For layout processing we need to numerically compare the seqid value of layout stateids. To do so, introduce a union to nfs4_stateid to swtich between opaque(16 bytes) and opaque(12 bytes) / __be32 Signed-off-by: Alexandros Batsakis --- fs/nfs/callback_proc.c | 13 +++++++------ fs/nfs/callback_xdr.c | 2 +- fs/nfs/delegation.c | 19 +++++++++++-------- fs/nfs/nfs4proc.c | 41 +++++++++++++++++++++++++---------------- fs/nfs/nfs4state.c | 4 ++-- fs/nfs/nfs4xdr.c | 38 +++++++++++++++++++++----------------- fs/nfs/pnfs.c | 11 ++++++----- fs/nfsd/nfs4callback.c | 1 - include/linux/nfs4.h | 16 ++++++++++++++-- 9 files changed, 87 insertions(+), 58 deletions(-) diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index 0053fbb..8752239 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -121,8 +121,9 @@ out: int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid) { - if (delegation == NULL || memcmp(delegation->stateid.data, stateid->data, - sizeof(delegation->stateid.data)) != 0) + if (delegation == NULL || memcmp(delegation->stateid.u.data, + stateid->u.data, + sizeof(delegation->stateid.u.data))) return 0; return 1; } @@ -331,11 +332,11 @@ int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const n if (delegation == NULL) return 0; - /* seqid is 4-bytes long */ - if (((u32 *) &stateid->data)[0] != 0) + if (stateid->u.stateid.seqid != 0) return 0; - if (memcmp(&delegation->stateid.data[4], &stateid->data[4], - sizeof(stateid->data)-4)) + if (memcmp(&delegation->stateid.u.stateid.other, + &stateid->u.stateid.other, + NFS4_STATEID_OTHER_SIZE)) return 0; return 1; diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index 1856181..b88db4d 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -137,7 +137,7 @@ static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) p = read_buf(xdr, 16); if (unlikely(p == NULL)) return htonl(NFS4ERR_RESOURCE); - memcpy(stateid->data, p, 16); + memcpy(stateid->u.data, p, 16); return 0; } diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 3016345..13b3e8d 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -104,7 +104,8 @@ again: continue; if (!test_bit(NFS_DELEGATED_STATE, &state->flags)) continue; - if (memcmp(state->stateid.data, stateid->data, sizeof(state->stateid.data)) != 0) + if (memcmp(state->stateid.u.data, stateid->u.data, + sizeof(state->stateid.u.data)) != 0) continue; get_nfs_open_context(ctx); spin_unlock(&inode->i_lock); @@ -133,8 +134,8 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, st if (delegation != NULL) { spin_lock(&delegation->lock); if (delegation->inode != NULL) { - memcpy(delegation->stateid.data, res->delegation.data, - sizeof(delegation->stateid.data)); + memcpy(delegation->stateid.u.data, res->delegation.u.data, + sizeof(delegation->stateid.u.data)); delegation->type = res->delegation_type; delegation->maxsize = res->maxsize; oldcred = delegation->cred; @@ -187,8 +188,9 @@ static struct nfs_delegation *nfs_detach_delegation_locked(struct nfs_inode *nfs if (delegation == NULL) goto nomatch; spin_lock(&delegation->lock); - if (stateid != NULL && memcmp(delegation->stateid.data, stateid->data, - sizeof(delegation->stateid.data)) != 0) + if (stateid != NULL && memcmp(delegation->stateid.u.data, + stateid->u.data, + sizeof(delegation->stateid.u.data)) != 0) goto nomatch_unlock; list_del_rcu(&delegation->super_list); delegation->inode = NULL; @@ -216,8 +218,8 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct delegation = kmalloc(sizeof(*delegation), GFP_NOFS); if (delegation == NULL) return -ENOMEM; - memcpy(delegation->stateid.data, res->delegation.data, - sizeof(delegation->stateid.data)); + memcpy(delegation->stateid.u.data, res->delegation.u.data, + sizeof(delegation->stateid.u.data)); delegation->type = res->delegation_type; delegation->maxsize = res->maxsize; delegation->change_attr = nfsi->change_attr; @@ -562,7 +564,8 @@ int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode) rcu_read_lock(); delegation = rcu_dereference(nfsi->delegation); if (delegation != NULL) { - memcpy(dst->data, delegation->stateid.data, sizeof(dst->data)); + memcpy(dst->u.data, delegation->stateid.u.data, + sizeof(dst->u.data)); ret = 1; } rcu_read_unlock(); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index bf854fe..ee3e3bc 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -867,8 +867,10 @@ static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) { if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) - memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); - memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); + memcpy(state->stateid.u.data, stateid->u.data, + sizeof(state->stateid.u.data)); + memcpy(state->open_stateid.u.data, stateid->u.data, + sizeof(state->open_stateid.u.data)); switch (fmode) { case FMODE_READ: set_bit(NFS_O_RDONLY_STATE, &state->flags); @@ -896,7 +898,8 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s */ write_seqlock(&state->seqlock); if (deleg_stateid != NULL) { - memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); + memcpy(state->stateid.u.data, deleg_stateid->u.data, + sizeof(state->stateid.u.data)); set_bit(NFS_DELEGATED_STATE, &state->flags); } if (open_stateid != NULL) @@ -927,7 +930,8 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat if (delegation == NULL) delegation = &deleg_cur->stateid; - else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) + else if (memcmp(deleg_cur->stateid.u.data, delegation->u.data, + NFS4_STATEID_SIZE) != 0) goto no_delegation_unlock; nfs_mark_delegation_referenced(deleg_cur); @@ -989,7 +993,8 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) break; } /* Save the delegation */ - memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); + memcpy(stateid.u.data, delegation->stateid.u.data, + sizeof(stateid.u.data)); rcu_read_unlock(); ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); if (ret != 0) @@ -1155,10 +1160,13 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state * * Check if we need to update the current stateid. */ if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && - memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { + memcmp(state->stateid.u.data, state->open_stateid.u.data, + sizeof(state->stateid.u.data)) != 0) { write_seqlock(&state->seqlock); if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) - memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); + memcpy(state->stateid.u.data, + state->open_stateid.u.data, + sizeof(state->stateid.u.data)); write_sequnlock(&state->seqlock); } pnfs4_layout_reclaim(state); @@ -1229,8 +1237,8 @@ static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs if (IS_ERR(opendata)) return PTR_ERR(opendata); opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; - memcpy(opendata->o_arg.u.delegation.data, stateid->data, - sizeof(opendata->o_arg.u.delegation.data)); + memcpy(opendata->o_arg.u.delegation.u.data, stateid->u.data, + sizeof(opendata->o_arg.u.delegation.u.data)); ret = nfs4_open_recover(opendata, state); nfs4_opendata_put(opendata); return ret; @@ -1288,8 +1296,8 @@ static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) if (RPC_ASSASSINATED(task)) return; if (data->rpc_status == 0) { - memcpy(data->o_res.stateid.data, data->c_res.stateid.data, - sizeof(data->o_res.stateid.data)); + memcpy(data->o_res.stateid.u.data, data->c_res.stateid.u.data, + sizeof(data->o_res.stateid.u.data)); nfs_confirm_seqid(&data->owner->so_seqid, 0); renew_lease(data->o_res.server, data->timestamp); data->rpc_done = 1; @@ -4132,9 +4140,10 @@ static void nfs4_locku_done(struct rpc_task *task, void *data) return; switch (task->tk_status) { case 0: - memcpy(calldata->lsp->ls_stateid.data, - calldata->res.stateid.data, - sizeof(calldata->lsp->ls_stateid.data)); + memcpy(calldata->lsp->ls_stateid.u.data, + calldata->res.stateid.u.data, + sizeof(calldata->lsp->ls_stateid.u. + data)); renew_lease(calldata->server, calldata->timestamp); break; case -NFS4ERR_BAD_STATEID: @@ -4348,8 +4357,8 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata) goto out; } if (data->rpc_status == 0) { - memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, - sizeof(data->lsp->ls_stateid.data)); + memcpy(data->lsp->ls_stateid.u.data, data->res.stateid.u.data, + sizeof(data->lsp->ls_stateid.u.data)); data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); } diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 8185c1e..0f44704 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1055,8 +1055,8 @@ restart: * Open state on this file cannot be recovered * All we can do is revert to using the zero stateid. */ - memset(state->stateid.data, 0, - sizeof(state->stateid.data)); + memset(state->stateid.u.data, 0, + sizeof(state->stateid.u.data)); /* Mark the file as being 'closed' */ state->state = 0; break; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 31a4b89..301ae14 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -986,7 +986,7 @@ static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg p = reserve_space(xdr, 8+NFS4_STATEID_SIZE); *p++ = cpu_to_be32(OP_CLOSE); *p++ = cpu_to_be32(arg->seqid->sequence->counter); - xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); + xdr_encode_opaque_fixed(p, arg->stateid->u.data, NFS4_STATEID_SIZE); hdr->nops++; hdr->replen += decode_close_maxsz; } @@ -1160,7 +1160,8 @@ static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args if (args->new_lock_owner){ p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+32); *p++ = cpu_to_be32(args->open_seqid->sequence->counter); - p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE); + p = xdr_encode_opaque_fixed(p, args->open_stateid->u.data, + NFS4_STATEID_SIZE); *p++ = cpu_to_be32(args->lock_seqid->sequence->counter); p = xdr_encode_hyper(p, args->lock_owner.clientid); *p++ = cpu_to_be32(16); @@ -1169,7 +1170,7 @@ static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args } else { p = reserve_space(xdr, NFS4_STATEID_SIZE+4); - p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE); + p = xdr_encode_opaque_fixed(p, args->lock_stateid->u.data, NFS4_STATEID_SIZE); *p = cpu_to_be32(args->lock_seqid->sequence->counter); } hdr->nops++; @@ -1201,7 +1202,8 @@ static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *ar *p++ = cpu_to_be32(OP_LOCKU); *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); *p++ = cpu_to_be32(args->seqid->sequence->counter); - p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); + p = xdr_encode_opaque_fixed(p, args->stateid->u.data, + NFS4_STATEID_SIZE); p = xdr_encode_hyper(p, args->fl->fl_start); xdr_encode_hyper(p, nfs4_lock_length(args->fl)); hdr->nops++; @@ -1351,7 +1353,7 @@ static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struc p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); - xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); + xdr_encode_opaque_fixed(p, stateid->u.data, NFS4_STATEID_SIZE); encode_string(xdr, name->len, name->name); } @@ -1382,7 +1384,7 @@ static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_co p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); *p++ = cpu_to_be32(OP_OPEN_CONFIRM); - p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); + p = xdr_encode_opaque_fixed(p, arg->stateid->u.data, NFS4_STATEID_SIZE); *p = cpu_to_be32(arg->seqid->sequence->counter); hdr->nops++; hdr->replen += decode_open_confirm_maxsz; @@ -1394,7 +1396,7 @@ static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_close p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE); - p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); + p = xdr_encode_opaque_fixed(p, arg->stateid->u.data, NFS4_STATEID_SIZE); *p = cpu_to_be32(arg->seqid->sequence->counter); encode_share_access(xdr, arg->fmode); hdr->nops++; @@ -1432,9 +1434,10 @@ static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context p = reserve_space(xdr, NFS4_STATEID_SIZE); if (ctx->state != NULL) { nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner); - xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE); + xdr_encode_opaque_fixed(p, stateid.u.data, + NFS4_STATEID_SIZE); } else - xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); + xdr_encode_opaque_fixed(p, zero_stateid.u.data, NFS4_STATEID_SIZE); } static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr) @@ -1548,7 +1551,7 @@ encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compoun p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); *p++ = cpu_to_be32(OP_SETATTR); - xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); + xdr_encode_opaque_fixed(p, zero_stateid.u.data, NFS4_STATEID_SIZE); p = reserve_space(xdr, 2*4); *p++ = cpu_to_be32(1); *p = cpu_to_be32(FATTR4_WORD0_ACL); @@ -1579,7 +1582,7 @@ static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); *p++ = cpu_to_be32(OP_SETATTR); - xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE); + xdr_encode_opaque_fixed(p, arg->stateid.u.data, NFS4_STATEID_SIZE); hdr->nops++; hdr->replen += decode_setattr_maxsz; encode_attrs(xdr, arg->iap, server); @@ -1642,7 +1645,7 @@ static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *state p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); *p++ = cpu_to_be32(OP_DELEGRETURN); - xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); + xdr_encode_opaque_fixed(p, stateid->u.data, NFS4_STATEID_SIZE); hdr->nops++; hdr->replen += decode_delegreturn_maxsz; } @@ -1833,7 +1836,8 @@ encode_layoutget(struct xdr_stream *xdr, p = xdr_encode_hyper(p, args->lseg.offset); p = xdr_encode_hyper(p, args->lseg.length); p = xdr_encode_hyper(p, args->minlength); - p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE); + p = xdr_encode_opaque_fixed(p, &args->stateid.u.data, + NFS4_STATEID_SIZE); *p = cpu_to_be32(args->maxcount); dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", @@ -1865,7 +1869,7 @@ encode_layoutcommit(struct xdr_stream *xdr, p = xdr_encode_hyper(p, args->lseg.offset); p = xdr_encode_hyper(p, args->lseg.length); *p++ = cpu_to_be32(0); /* reclaim */ - p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE); + p = xdr_encode_opaque_fixed(p, args->stateid.u.data, NFS4_STATEID_SIZE); *p++ = cpu_to_be32(1); /* newoffset = TRUE */ p = xdr_encode_hyper(p, args->lastbytewritten); *p = cpu_to_be32(args->time_modify_changed != 0); @@ -1912,7 +1916,7 @@ encode_layoutreturn(struct xdr_stream *xdr, p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE); p = xdr_encode_hyper(p, args->lseg.offset); p = xdr_encode_hyper(p, args->lseg.length); - p = xdr_encode_opaque_fixed(p, &args->stateid.data, + p = xdr_encode_opaque_fixed(p, &args->stateid.u.data, NFS4_STATEID_SIZE); dprintk("%s: call %pF\n", __func__, @@ -3935,7 +3939,7 @@ static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) { - return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); + return decode_opaque_fixed(xdr, stateid->u.data, NFS4_STATEID_SIZE); } static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) @@ -5183,7 +5187,7 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, if (unlikely(!p)) goto out_overflow; res->return_on_close = be32_to_cpup(p++); - p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE); + p = xdr_decode_opaque_fixed(p, res->stateid.u.data, NFS4_STATEID_SIZE); layout_count = be32_to_cpup(p); if (!layout_count) { dprintk("%s: server responded with empty layout array\n", diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 4e35ad9..8202523 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -489,7 +489,7 @@ pnfs_set_layout_stateid(struct pnfs_layout_type *lo, const nfs4_stateid *stateid) { write_seqlock(&lo->seqlock); - memcpy(lo->stateid.data, stateid->data, sizeof(lo->stateid.data)); + memcpy(lo->stateid.u.data, stateid->u.data, sizeof(lo->stateid.u.data)); write_sequnlock(&lo->seqlock); } @@ -502,7 +502,8 @@ pnfs_get_layout_stateid(nfs4_stateid *dst, struct pnfs_layout_type *lo) do { seq = read_seqbegin(&lo->seqlock); - memcpy(dst->data, lo->stateid.data, sizeof(lo->stateid.data)); + memcpy(dst->u.data, lo->stateid.u.data, + sizeof(lo->stateid.u.data)); } while (read_seqretry(&lo->seqlock, seq)); dprintk("<-- %s\n", __func__); @@ -517,8 +518,8 @@ pnfs_layout_from_open_stateid(nfs4_stateid *dst, struct nfs4_state *state) do { seq = read_seqbegin(&state->seqlock); - memcpy(dst->data, state->stateid.data, - sizeof(state->stateid.data)); + memcpy(dst->u.data, state->stateid.u.data, + sizeof(state->stateid.u.data)); } while (read_seqretry(&state->seqlock, seq)); dprintk("<-- %s\n", __func__); @@ -564,7 +565,7 @@ get_layout(struct inode *ino, lgp->args.inode = ino; lgp->lsegpp = lsegpp; - if (!memcmp(lo->stateid.data, &zero_stateid, NFS4_STATEID_SIZE)) { + if (!memcmp(lo->stateid.u.data, &zero_stateid, NFS4_STATEID_SIZE)) { struct nfs_open_context *oldctx = ctx; if (!oldctx) { diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index eb78e7e..d80356a 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -41,7 +41,6 @@ #define NFSPROC4_CB_NULL 0 #define NFSPROC4_CB_COMPOUND 1 -#define NFS4_STATEID_SIZE 16 /* Index of predefined Linux callback client operations */ diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 219e6b4..46bd627 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -17,7 +17,9 @@ #define NFS4_BITMAP_SIZE 2 #define NFS4_VERIFIER_SIZE 8 -#define NFS4_STATEID_SIZE 16 +#define NFS4_STATEID_SEQID_SIZE 4 +#define NFS4_STATEID_OTHER_SIZE 12 +#define NFS4_STATEID_SIZE (NFS4_STATEID_SEQID_SIZE + NFS4_STATEID_OTHER_SIZE) #define NFS4_FHSIZE 128 #define NFS4_MAXPATHLEN PATH_MAX #define NFS4_MAXNAMLEN NAME_MAX @@ -174,7 +176,17 @@ struct nfs4_acl { }; typedef struct { char data[NFS4_VERIFIER_SIZE]; } nfs4_verifier; -typedef struct { char data[NFS4_STATEID_SIZE]; } nfs4_stateid; + +struct nfs41_stateid { + __be32 seqid; + char other[NFS4_STATEID_OTHER_SIZE]; +} __attribute__ ((packed)); +typedef struct { + union { + char data[NFS4_STATEID_SIZE]; + struct nfs41_stateid stateid; + } u; +} nfs4_stateid; enum nfs_opnum4 { OP_ACCESS = 3, -- 1.6.2.5