diff options
-rw-r--r-- | fs/nfs/delegation.c | 42 | ||||
-rw-r--r-- | fs/nfs/delegation.h | 17 | ||||
-rw-r--r-- | fs/nfs/nfs4proc.c | 2 | ||||
-rw-r--r-- | fs/nfs/nfs4renewd.c | 1 |
4 files changed, 49 insertions, 13 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 00c350c..e75f2f8 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -43,6 +43,27 @@ static void nfs_free_delegation(struct nfs_delegation *delegation) put_rpccred(cred); } +void nfs_mark_delegation_referenced(struct nfs_delegation *delegation) +{ + set_bit(NFS_DELEGATION_REFERENCED, &delegation->flags); +} + +int nfs_have_delegation(struct inode *inode, int flags) +{ + struct nfs_delegation *delegation; + int ret = 0; + + flags &= FMODE_READ|FMODE_WRITE; + rcu_read_lock(); + delegation = rcu_dereference(NFS_I(inode)->delegation); + if (delegation != NULL && (delegation->type & flags) == flags) { + nfs_mark_delegation_referenced(delegation); + ret = 1; + } + rcu_read_unlock(); + return ret; +} + static int nfs_delegation_claim_locks(struct nfs_open_context *ctx, struct nfs4_state *state) { struct inode *inode = state->inode; @@ -188,6 +209,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct delegation->change_attr = nfsi->change_attr; delegation->cred = get_rpccred(cred); delegation->inode = inode; + delegation->flags = 1<<NFS_DELEGATION_REFERENCED; spin_lock_init(&delegation->lock); spin_lock(&clp->cl_lock); @@ -382,6 +404,26 @@ void nfs_handle_cb_pathdown(struct nfs_client *clp) nfs_client_mark_return_all_delegations(clp); } +static void nfs_client_mark_return_unreferenced_delegations(struct nfs_client *clp) +{ + struct nfs_delegation *delegation; + + rcu_read_lock(); + list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) { + if (test_and_clear_bit(NFS_DELEGATION_REFERENCED, &delegation->flags)) + continue; + set_bit(NFS_DELEGATION_RETURN, &delegation->flags); + set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state); + } + rcu_read_unlock(); +} + +void nfs_expire_unreferenced_delegations(struct nfs_client *clp) +{ + nfs_client_mark_return_unreferenced_delegations(clp); + nfs_delegation_run_state_manager(clp); +} + /* * Asynchronous delegation recall! */ diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h index 56f3eb5..2a74882 100644 --- a/fs/nfs/delegation.h +++ b/fs/nfs/delegation.h @@ -28,6 +28,7 @@ struct nfs_delegation { enum { NFS_DELEGATION_NEED_RECLAIM = 0, NFS_DELEGATION_RETURN, + NFS_DELEGATION_REFERENCED, }; int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); @@ -39,6 +40,7 @@ void nfs_inode_return_delegation_noreclaim(struct inode *inode); struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle); void nfs_super_return_all_delegations(struct super_block *sb); void nfs_expire_all_delegations(struct nfs_client *clp); +void nfs_expire_unreferenced_delegations(struct nfs_client *clp); void nfs_handle_cb_pathdown(struct nfs_client *clp); void nfs_client_return_marked_delegations(struct nfs_client *clp); @@ -51,19 +53,8 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl); int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode); -static inline int nfs_have_delegation(struct inode *inode, int flags) -{ - struct nfs_delegation *delegation; - int ret = 0; - - flags &= FMODE_READ|FMODE_WRITE; - rcu_read_lock(); - delegation = rcu_dereference(NFS_I(inode)->delegation); - if (delegation != NULL && (delegation->type & flags) == flags) - ret = 1; - rcu_read_unlock(); - return ret; -} +void nfs_mark_delegation_referenced(struct nfs_delegation *delegation); +int nfs_have_delegation(struct inode *inode, int flags); #else static inline int nfs_have_delegation(struct inode *inode, int flags) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 2a347d4..fc0c9d2 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -421,6 +421,7 @@ static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_fla return 0; if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) return 0; + nfs_mark_delegation_referenced(delegation); return 1; } @@ -505,6 +506,7 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) goto no_delegation_unlock; + nfs_mark_delegation_referenced(deleg_cur); __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags); ret = 1; no_delegation_unlock: diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c index ca557e6..f524e93 100644 --- a/fs/nfs/nfs4renewd.c +++ b/fs/nfs/nfs4renewd.c @@ -101,6 +101,7 @@ nfs4_renew_state(struct work_struct *work) cancel_delayed_work(&clp->cl_renewd); schedule_delayed_work(&clp->cl_renewd, timeout); spin_unlock(&clp->cl_lock); + nfs_expire_unreferenced_delegations(clp); out: dprintk("%s: done\n", __func__); } |