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path: root/fs/afs/inode.c
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Diffstat (limited to 'fs/afs/inode.c')
-rw-r--r--fs/afs/inode.c59
1 files changed, 25 insertions, 34 deletions
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 94675acb6a3a..7dde703df40c 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -71,7 +71,6 @@ static int afs_inode_init_from_status(struct afs_operation *op,
struct afs_vnode_param *vp,
struct afs_vnode *vnode)
{
- struct afs_cb_interest *old_cbi = NULL;
struct afs_file_status *status = &vp->scb.status;
struct inode *inode = AFS_VNODE_TO_I(vnode);
struct timespec64 t;
@@ -150,18 +149,11 @@ static int afs_inode_init_from_status(struct afs_operation *op,
vnode->cb_expires_at = ktime_get_real_seconds();
} else {
vnode->cb_expires_at = vp->scb.callback.expires_at;
- old_cbi = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->cb_lock.lock));
- if (op->cbi != old_cbi)
- rcu_assign_pointer(vnode->cb_interest,
- afs_get_cb_interest(op->cbi));
- else
- old_cbi = NULL;
+ vnode->cb_server = op->server;
set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
}
write_sequnlock(&vnode->cb_lock);
- afs_put_cb_interest(afs_v2net(vnode), old_cbi);
return 0;
}
@@ -255,18 +247,12 @@ static void afs_apply_status(struct afs_operation *op,
static void afs_apply_callback(struct afs_operation *op,
struct afs_vnode_param *vp)
{
- struct afs_cb_interest *old;
struct afs_callback *cb = &vp->scb.callback;
struct afs_vnode *vnode = vp->vnode;
- if (!afs_cb_is_broken(vp->cb_break_before, vnode, op->cbi)) {
+ if (!afs_cb_is_broken(vp->cb_break_before, vnode)) {
vnode->cb_expires_at = cb->expires_at;
- old = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->cb_lock.lock));
- if (old != op->cbi) {
- rcu_assign_pointer(vnode->cb_interest, afs_get_cb_interest(op->cbi));
- afs_put_cb_interest(afs_v2net(vnode), old);
- }
+ vnode->cb_server = op->server;
set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
}
}
@@ -570,12 +556,30 @@ void afs_zap_data(struct afs_vnode *vnode)
}
/*
+ * Get the server reinit counter for a vnode's current server.
+ */
+static bool afs_get_s_break_rcu(struct afs_vnode *vnode, unsigned int *_s_break)
+{
+ struct afs_server_list *slist = rcu_dereference(vnode->volume->servers);
+ struct afs_server *server;
+ int i;
+
+ for (i = 0; i < slist->nr_servers; i++) {
+ server = slist->servers[i].server;
+ if (server == vnode->cb_server) {
+ *_s_break = READ_ONCE(server->cb_s_break);
+ return true;
+ }
+ }
+
+ return false;
+}
+
+/*
* Check the validity of a vnode/inode.
*/
bool afs_check_validity(struct afs_vnode *vnode)
{
- struct afs_cb_interest *cbi;
- struct afs_server *server;
struct afs_volume *volume = vnode->volume;
enum afs_cb_break_reason need_clear = afs_cb_break_no_break;
time64_t now = ktime_get_real_seconds();
@@ -588,11 +592,8 @@ bool afs_check_validity(struct afs_vnode *vnode)
cb_v_break = READ_ONCE(volume->cb_v_break);
cb_break = vnode->cb_break;
- if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) {
- cbi = rcu_dereference(vnode->cb_interest);
- server = rcu_dereference(cbi->server);
- cb_s_break = READ_ONCE(server->cb_s_break);
-
+ if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags) &&
+ afs_get_s_break_rcu(vnode, &cb_s_break)) {
if (vnode->cb_s_break != cb_s_break ||
vnode->cb_v_break != cb_v_break) {
vnode->cb_s_break = cb_s_break;
@@ -739,7 +740,6 @@ int afs_drop_inode(struct inode *inode)
*/
void afs_evict_inode(struct inode *inode)
{
- struct afs_cb_interest *cbi;
struct afs_vnode *vnode;
vnode = AFS_FS_I(inode);
@@ -756,15 +756,6 @@ void afs_evict_inode(struct inode *inode)
truncate_inode_pages_final(&inode->i_data);
clear_inode(inode);
- write_seqlock(&vnode->cb_lock);
- cbi = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->cb_lock.lock));
- if (cbi) {
- afs_put_cb_interest(afs_i2net(inode), cbi);
- rcu_assign_pointer(vnode->cb_interest, NULL);
- }
- write_sequnlock(&vnode->cb_lock);
-
while (!list_empty(&vnode->wb_keys)) {
struct afs_wb_key *wbk = list_entry(vnode->wb_keys.next,
struct afs_wb_key, vnode_link);