From cf80516579ceb87b91205e68fb31d5affd5aea8d Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 15 Nov 2016 14:56:07 -0500 Subject: [PATCH] NFSv4: Add encode/decode of the layoutreturn op in CLOSE Add XDR encoding for the layoutreturn op, and storage for the layoutreturn arguments to the CLOSE compound. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 49 ++++++++++++++++++++++++++++++++++++++++--------- fs/nfs/nfs4xdr.c | 26 ++++++++++++++++++++++++++ include/linux/nfs_xdr.h | 3 +++ 3 files changed, 69 insertions(+), 9 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 87972cf..9b9b0ea 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3035,10 +3035,14 @@ struct nfs4_closedata { struct nfs4_state *state; struct nfs_closeargs arg; struct nfs_closeres res; + struct { + struct nfs4_layoutreturn_args arg; + struct nfs4_layoutreturn_res res; + u32 roc_barrier; + bool roc; + } lr; struct nfs_fattr fattr; unsigned long timestamp; - bool roc; - u32 roc_barrier; }; static void nfs4_free_closedata(void *data) @@ -3047,7 +3051,7 @@ static void nfs4_free_closedata(void *data) struct nfs4_state_owner *sp = calldata->state->owner; struct super_block *sb = calldata->state->inode->i_sb; - if (calldata->roc) + if (calldata->lr.roc) pnfs_roc_release(calldata->state->inode); nfs4_put_open_state(calldata->state); nfs_free_seqid(calldata->arg.seqid); @@ -3067,15 +3071,41 @@ static void nfs4_close_done(struct rpc_task *task, void *data) if (!nfs4_sequence_done(task, &calldata->res.seq_res)) return; trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); + + /* Handle Layoutreturn errors */ + if (calldata->arg.lr_args && task->tk_status != 0) { + switch (calldata->res.lr_ret) { + default: + calldata->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT; + break; + case 0: + calldata->arg.lr_args = NULL; + calldata->res.lr_res = NULL; + break; + case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_DELEG_REVOKED: + case -NFS4ERR_EXPIRED: + case -NFS4ERR_BAD_STATEID: + case -NFS4ERR_OLD_STATEID: + case -NFS4ERR_UNKNOWN_LAYOUTTYPE: + case -NFS4ERR_WRONG_CRED: + calldata->arg.lr_args = NULL; + calldata->res.lr_res = NULL; + calldata->res.lr_ret = 0; + rpc_restart_call_prepare(task); + return; + } + } + /* hmm. we are done with the inode, and in the process of freeing * the state_owner. we keep this around to process errors */ switch (task->tk_status) { case 0: res_stateid = &calldata->res.stateid; - if (calldata->roc) + if (calldata->lr.roc) pnfs_roc_set_barrier(state->inode, - calldata->roc_barrier); + calldata->lr.roc_barrier); renew_lease(server, calldata->timestamp); break; case -NFS4ERR_ADMIN_REVOKED: @@ -3151,7 +3181,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) goto out_no_action; } - if (nfs4_wait_on_layoutreturn(inode, task)) { + if (!calldata->arg.lr_args && nfs4_wait_on_layoutreturn(inode, task)) { nfs_release_seqid(calldata->arg.seqid); goto out_wait; } @@ -3165,8 +3195,8 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) else calldata->arg.bitmask = NULL; } - if (calldata->roc) - pnfs_roc_get_barrier(inode, &calldata->roc_barrier); + if (calldata->lr.roc) + pnfs_roc_get_barrier(inode, &calldata->lr.roc_barrier); calldata->arg.share_access = nfs4_map_atomic_open_share(NFS_SERVER(inode), @@ -3250,7 +3280,8 @@ int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) calldata->res.fattr = &calldata->fattr; calldata->res.seqid = calldata->arg.seqid; calldata->res.server = server; - calldata->roc = nfs4_roc(state->inode); + calldata->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT; + calldata->lr.roc = nfs4_roc(state->inode); nfs_sb_active(calldata->inode->i_sb); msg.rpc_argp = &calldata->arg; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 0a82b3f..73d2a68 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -415,6 +415,8 @@ static int nfs4_stat_to_errno(int); #else /* CONFIG_NFS_V4_1 */ #define encode_sequence_maxsz 0 #define decode_sequence_maxsz 0 +#define encode_layoutreturn_maxsz 0 +#define decode_layoutreturn_maxsz 0 #endif /* CONFIG_NFS_V4_1 */ #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ @@ -508,11 +510,13 @@ static int nfs4_stat_to_errno(int); #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ encode_sequence_maxsz + \ encode_putfh_maxsz + \ + encode_layoutreturn_maxsz + \ encode_close_maxsz + \ encode_getattr_maxsz) #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ decode_sequence_maxsz + \ decode_putfh_maxsz + \ + decode_layoutreturn_maxsz + \ decode_close_maxsz + \ decode_getattr_maxsz) #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ @@ -2061,6 +2065,13 @@ static void encode_free_stateid(struct xdr_stream *xdr, encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); encode_nfs4_stateid(xdr, &args->stateid); } +#else +static inline void +encode_layoutreturn(struct xdr_stream *xdr, + const struct nfs4_layoutreturn_args *args, + struct compound_hdr *hdr) +{ +} #endif /* CONFIG_NFS_V4_1 */ /* @@ -2248,6 +2259,8 @@ static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, encode_compound_hdr(xdr, req, &hdr); encode_sequence(xdr, &args->seq_args, &hdr); encode_putfh(xdr, args->fh, &hdr); + if (args->lr_args) + encode_layoutreturn(xdr, args->lr_args, &hdr); encode_close(xdr, args, &hdr); if (args->bitmask != NULL) encode_getfattr(xdr, args->bitmask, &hdr); @@ -6088,6 +6101,13 @@ static int decode_free_stateid(struct xdr_stream *xdr, res->status = decode_op_hdr(xdr, OP_FREE_STATEID); return res->status; } +#else +static inline +int decode_layoutreturn(struct xdr_stream *xdr, + struct nfs4_layoutreturn_res *res) +{ + return 0; +} #endif /* CONFIG_NFS_V4_1 */ /* @@ -6440,6 +6460,12 @@ static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, status = decode_putfh(xdr); if (status) goto out; + if (res->lr_res) { + status = decode_layoutreturn(xdr, res->lr_res); + res->lr_ret = status; + if (status) + goto out; + } status = decode_close(xdr, res); if (status != 0) goto out; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index beb1e10..44ed64b 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -469,6 +469,7 @@ struct nfs_closeargs { fmode_t fmode; u32 share_access; const u32 * bitmask; + struct nfs4_layoutreturn_args *lr_args; }; struct nfs_closeres { @@ -477,6 +478,8 @@ struct nfs_closeres { struct nfs_fattr * fattr; struct nfs_seqid * seqid; const struct nfs_server *server; + struct nfs4_layoutreturn_res *lr_res; + int lr_ret; }; /* * * Arguments to the lock,lockt, and locku call. -- 2.7.4