From: "J. Bruce Fields" Subject: [PATCH 07/14] nfsd4: separate delegreturn case from preprocess_stateid_op Date: Tue, 10 Mar 2009 20:26:55 -0400 Message-ID: <1236731222-3294-8-git-send-email-bfields@fieldses.org> References: <1236731222-3294-1-git-send-email-bfields@fieldses.org> <1236731222-3294-2-git-send-email-bfields@fieldses.org> <1236731222-3294-3-git-send-email-bfields@fieldses.org> <1236731222-3294-4-git-send-email-bfields@fieldses.org> <1236731222-3294-5-git-send-email-bfields@fieldses.org> <1236731222-3294-6-git-send-email-bfields@fieldses.org> <1236731222-3294-7-git-send-email-bfields@fieldses.org> Cc: "J. Bruce Fields" To: linux-nfs@vger.kernel.org Return-path: Received: from mail.fieldses.org ([141.211.133.115]:44046 "EHLO pickle.fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752322AbZCKA1F (ORCPT ); Tue, 10 Mar 2009 20:27:05 -0400 In-Reply-To: <1236731222-3294-7-git-send-email-bfields@fieldses.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: From: J. Bruce Fields Delegreturn is enough a special case for preprocess_stateid_op to warrant just open-coding it in delegreturn. There should be no change in behavior here; we're just reshuffling code. Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 40 ++++++++++++++++++++++++++++------------ include/linux/nfsd/state.h | 1 - 2 files changed, 28 insertions(+), 13 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index d555585..de1d68a 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -2000,10 +2000,7 @@ out: static inline __be32 check_special_stateids(svc_fh *current_fh, stateid_t *stateid, int flags) { - /* Trying to call delegreturn with a special stateid? Yuch: */ - if (!(flags & (RD_STATE | WR_STATE))) - return nfserr_bad_stateid; - else if (ONE_STATEID(stateid) && (flags & RD_STATE)) + if (ONE_STATEID(stateid) && (flags & RD_STATE)) return nfs_ok; else if (locks_in_grace()) { /* Answer in remaining cases depends on existance of @@ -2024,8 +2021,7 @@ check_special_stateids(svc_fh *current_fh, stateid_t *stateid, int flags) static inline int io_during_grace_disallowed(struct inode *inode, int flags) { - return locks_in_grace() && (flags & (RD_STATE | WR_STATE)) - && mandatory_lock(inode); + return locks_in_grace() && mandatory_lock(inode); } static int check_stateid_generation(stateid_t *in, stateid_t *ref) @@ -2089,8 +2085,6 @@ nfs4_preprocess_stateid_op(struct svc_fh *current_fh, stateid_t *stateid, int fl if (status) goto out; renew_client(dp->dl_client); - if (flags & DELEG_RET) - unhash_delegation(dp); if (filpp) *filpp = dp->dl_vfs_file; } else { /* open or lock stateid */ @@ -2408,16 +2402,38 @@ __be32 nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_delegreturn *dr) { + struct nfs4_delegation *dp; + stateid_t *stateid = &dr->dr_stateid; + struct inode *inode; __be32 status; if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) - goto out; + return status; + inode = cstate->current_fh.fh_dentry->d_inode; nfs4_lock_state(); - status = nfs4_preprocess_stateid_op(&cstate->current_fh, - &dr->dr_stateid, DELEG_RET, NULL); - nfs4_unlock_state(); + status = nfserr_bad_stateid; + if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) + goto out; + status = nfserr_stale_stateid; + if (STALE_STATEID(stateid)) + goto out; + status = nfs_ok; + if (is_delegation_stateid(stateid)) + goto out; + status = nfserr_bad_stateid; + dp = find_delegation_stateid(inode, stateid); + if (!dp) + goto out; + status = check_stateid_generation(stateid, &dp->dl_stateid); + if (status) + goto out; + renew_client(dp->dl_client); + + unhash_delegation(dp); out: + nfs4_unlock_state(); + return status; } diff --git a/include/linux/nfsd/state.h b/include/linux/nfsd/state.h index 1130d53..c9311a1 100644 --- a/include/linux/nfsd/state.h +++ b/include/linux/nfsd/state.h @@ -263,7 +263,6 @@ struct nfs4_stateid { #define RD_STATE 0x00000010 #define WR_STATE 0x00000020 #define CLOSE_STATE 0x00000040 -#define DELEG_RET 0x00000080 #define seqid_mutating_err(err) \ (((err) != nfserr_stale_clientid) && \ -- 1.6.0.4