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c3e9c04b89
Stable bugfixes:
- Revalidate "." and ".." correctly on open
- Avoid RCU usage in tracepoints
- Fix ugly referral attributes
- Fix a typo in nomigration mount option
- Revert "NFS: Move the flock open mode check into nfs_flock()"
Features:
- Implement a stronger send queue accounting system for NFS over RDMA
- Switch some atomics to the new refcount_t type
Other bugfixes and cleanups:
- Clean up access mode bits
- Remove special-case revalidations in nfs_opendir()
- Improve invalidating NFS over RDMA memory for async operations that time out
- Handle NFS over RDMA replies with a worqueue
- Handle NFS over RDMA sends with a workqueue
- Fix up replaying interrupted requests
- Remove dead NFS over RDMA definitions
- Update NFS over RDMA copyright information
- Be more consistent with bool initialization and comparisons
- Mark expected switch fall throughs
- Various sunrpc tracepoint cleanups
- Fix various OPEN races
- Fix a typo in nfs_rename()
- Use common error handling code in nfs_lock_and_join_request()
- Check that some structures are properly cleaned up during net_exit()
- Remove net pointer from dprintk()s
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Merge tag 'nfs-for-4.15-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
"Stable bugfixes:
- Revalidate "." and ".." correctly on open
- Avoid RCU usage in tracepoints
- Fix ugly referral attributes
- Fix a typo in nomigration mount option
- Revert "NFS: Move the flock open mode check into nfs_flock()"
Features:
- Implement a stronger send queue accounting system for NFS over RDMA
- Switch some atomics to the new refcount_t type
Other bugfixes and cleanups:
- Clean up access mode bits
- Remove special-case revalidations in nfs_opendir()
- Improve invalidating NFS over RDMA memory for async operations that
time out
- Handle NFS over RDMA replies with a worqueue
- Handle NFS over RDMA sends with a workqueue
- Fix up replaying interrupted requests
- Remove dead NFS over RDMA definitions
- Update NFS over RDMA copyright information
- Be more consistent with bool initialization and comparisons
- Mark expected switch fall throughs
- Various sunrpc tracepoint cleanups
- Fix various OPEN races
- Fix a typo in nfs_rename()
- Use common error handling code in nfs_lock_and_join_request()
- Check that some structures are properly cleaned up during
net_exit()
- Remove net pointer from dprintk()s"
* tag 'nfs-for-4.15-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (62 commits)
NFS: Revert "NFS: Move the flock open mode check into nfs_flock()"
NFS: Fix typo in nomigration mount option
nfs: Fix ugly referral attributes
NFS: super: mark expected switch fall-throughs
sunrpc: remove net pointer from messages
nfs: remove net pointer from messages
sunrpc: exit_net cleanup check added
nfs client: exit_net cleanup check added
nfs/write: Use common error handling code in nfs_lock_and_join_requests()
NFSv4: Replace closed stateids with the "invalid special stateid"
NFSv4: nfs_set_open_stateid must not trigger state recovery for closed state
NFSv4: Check the open stateid when searching for expired state
NFSv4: Clean up nfs4_delegreturn_done
NFSv4: cleanup nfs4_close_done
NFSv4: Retry NFS4ERR_OLD_STATEID errors in layoutreturn
pNFS: Retry NFS4ERR_OLD_STATEID errors in layoutreturn-on-close
NFSv4: Don't try to CLOSE if the stateid 'other' field has changed
NFSv4: Retry CLOSE and DELEGRETURN on NFS4ERR_OLD_STATEID.
NFS: Fix a typo in nfs_rename()
NFSv4: Fix open create exclusive when the server reboots
...
83 lines
3.1 KiB
C
83 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* linux/fs/nfs/delegation.h
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*
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* Copyright (c) Trond Myklebust
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*
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* Definitions pertaining to NFS delegated files
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*/
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#ifndef FS_NFS_DELEGATION_H
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#define FS_NFS_DELEGATION_H
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#if IS_ENABLED(CONFIG_NFS_V4)
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/*
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* NFSv4 delegation
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*/
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struct nfs_delegation {
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struct list_head super_list;
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struct rpc_cred *cred;
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struct inode *inode;
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nfs4_stateid stateid;
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fmode_t type;
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unsigned long pagemod_limit;
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__u64 change_attr;
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unsigned long flags;
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spinlock_t lock;
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struct rcu_head rcu;
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};
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enum {
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NFS_DELEGATION_NEED_RECLAIM = 0,
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NFS_DELEGATION_RETURN,
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NFS_DELEGATION_RETURN_IF_CLOSED,
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NFS_DELEGATION_REFERENCED,
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NFS_DELEGATION_RETURNING,
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NFS_DELEGATION_REVOKED,
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NFS_DELEGATION_TEST_EXPIRED,
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};
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int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
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void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
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int nfs4_inode_return_delegation(struct inode *inode);
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int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid);
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void nfs_inode_return_delegation_noreclaim(struct inode *inode);
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struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle);
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void nfs_server_return_all_delegations(struct nfs_server *);
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void nfs_expire_all_delegations(struct nfs_client *clp);
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void nfs_expire_unused_delegation_types(struct nfs_client *clp, fmode_t flags);
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void nfs_expire_unreferenced_delegations(struct nfs_client *clp);
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int nfs_client_return_marked_delegations(struct nfs_client *clp);
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int nfs_delegations_present(struct nfs_client *clp);
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void nfs_remove_bad_delegation(struct inode *inode, const nfs4_stateid *stateid);
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void nfs_delegation_mark_reclaim(struct nfs_client *clp);
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void nfs_delegation_reap_unclaimed(struct nfs_client *clp);
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void nfs_mark_test_expired_all_delegations(struct nfs_client *clp);
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void nfs_reap_expired_delegations(struct nfs_client *clp);
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/* NFSv4 delegation-related procedures */
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int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync);
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int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid, fmode_t type);
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int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid);
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bool nfs4_copy_delegation_stateid(struct inode *inode, fmode_t flags, nfs4_stateid *dst, struct rpc_cred **cred);
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bool nfs4_refresh_delegation_stateid(nfs4_stateid *dst, struct inode *inode);
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void nfs_mark_delegation_referenced(struct nfs_delegation *delegation);
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int nfs4_have_delegation(struct inode *inode, fmode_t flags);
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int nfs4_check_delegation(struct inode *inode, fmode_t flags);
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bool nfs4_delegation_flush_on_close(const struct inode *inode);
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void nfs_inode_find_delegation_state_and_recover(struct inode *inode,
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const nfs4_stateid *stateid);
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#endif
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static inline int nfs_have_delegated_attributes(struct inode *inode)
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{
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return NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) &&
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!(NFS_I(inode)->cache_validity & NFS_INO_REVAL_FORCED);
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}
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#endif
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