diff options
| author | David Howells <dhowells@redhat.com> | 2023-11-02 19:08:43 +0300 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2024-01-01 19:37:27 +0300 |
| commit | ca0e79a46097d54e4af46c67c852479d97af35bb (patch) | |
| tree | 4d6df831634dd37fca6dc83e3c85cbeb3d98ddf6 /fs/afs/internal.h | |
| parent | 21c1f410d20295dbeee4178f7fdde5e167e20b43 (diff) | |
| download | linux-ca0e79a46097d54e4af46c67c852479d97af35bb.tar.xz | |
afs: Make it possible to find the volumes that are using a server
Make it possible to find the afs_volume structs that are using an
afs_server struct to aid in breaking volume callbacks.
The way this is done is that each afs_volume already has an array of
afs_server_entry records that point to the servers where that volume might
be found. An afs_volume backpointer and a list node is added to each entry
and each entry is then added to an RCU-traversable list on the afs_server
to which it points.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Diffstat (limited to 'fs/afs/internal.h')
| -rw-r--r-- | fs/afs/internal.h | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 96c1074fe78d..0b726bd2cf8c 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -414,6 +414,7 @@ struct afs_cell { unsigned int debug_id; /* The volumes belonging to this cell */ + spinlock_t vs_lock; /* Lock for server->volumes */ struct rb_root volumes; /* Tree of volumes on this server */ struct hlist_head proc_volumes; /* procfs volume list */ seqlock_t volume_lock; /* For volumes */ @@ -564,6 +565,7 @@ struct afs_server { struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ struct hlist_node proc_link; /* Link in net->fs_proc */ + struct list_head volumes; /* RCU list of afs_server_entry objects */ struct work_struct initcb_work; /* Work for CB.InitCallBackState* */ struct afs_server *gc_next; /* Next server in manager's list */ time64_t unuse_time; /* Time at which last unused */ @@ -605,12 +607,14 @@ struct afs_server { */ struct afs_server_entry { struct afs_server *server; + struct afs_volume *volume; + struct list_head slink; /* Link in server->volumes */ }; struct afs_server_list { struct rcu_head rcu; - afs_volid_t vids[AFS_MAXTYPES]; /* Volume IDs */ refcount_t usage; + bool attached; /* T if attached to servers */ unsigned char nr_servers; unsigned char preferred; /* Preferred server */ unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ @@ -623,10 +627,9 @@ struct afs_server_list { * Live AFS volume management. */ struct afs_volume { - union { - struct rcu_head rcu; - afs_volid_t vid; /* volume ID */ - }; + struct rcu_head rcu; + afs_volid_t vid; /* The volume ID of this volume */ + afs_volid_t vids[AFS_MAXTYPES]; /* All associated volume IDs */ refcount_t ref; time64_t update_at; /* Time at which to next update */ struct afs_cell *cell; /* Cell to which belongs (pins ref) */ @@ -1528,10 +1531,14 @@ static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list } extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); -extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, - struct afs_vldb_entry *, - u8); +struct afs_server_list *afs_alloc_server_list(struct afs_volume *volume, + struct key *key, + struct afs_vldb_entry *vldb); extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); +void afs_attach_volume_to_servers(struct afs_volume *volume, struct afs_server_list *slist); +void afs_reattach_volume_to_servers(struct afs_volume *volume, struct afs_server_list *slist, + struct afs_server_list *old); +void afs_detach_volume_from_servers(struct afs_volume *volume, struct afs_server_list *slist); /* * super.c |