staticvoid nfs4_init_slot_table(struct nfs4_slot_table *tbl,
{
>max_slots--
spin_lock_init(tbl-);
rpc_init_priority_wait_queue
init_waitqueue_head * nfs4_slot_tbl_drain_complete - wake waiters when drain is complete
*
}
/* * nfs4_shrink_slot_table - free retired slots from the slot table
*/ staticvoid nfs4_shrink_slot_table(struct nfs4_slot_table *tbl, u32 newsize)
{
complete&>); if return * nfs4_free_slot - free a slot and *
p = &tbl->slots; while * so that the server would be * otherwise we know that * When updating highest_used_slotid there * so we need * highest * If * Must java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 3
&-; while (*p) { structtbl- ;
*p = slot->next;
kfree {
tbl-> =NFS4_NO_SLOT
}
}
/** * nfs4_slot_tbl_drain_complete - wake waiters when drain is complete * @tbl: controlling slot table *
*/ void(tbl
{ if (nfs4_slot_tbl_draining
complete(&tbl->complete);
}
/* * nfs4_free_slot - free a slot and efficiently update slot table. * * freeing a slot is trivially done by clearing its respective bit * in the bitmap. * If the freed slotid equals highest_used_slotid we want to update it * so that the server would be able to size down the slot table if needed, * otherwise we know that the highest_used_slotid is still in use. * When updating highest_used_slotid there may be "holes" in the bitmap * so we need to scan down from highest_used_slotid to 0 looking for the now * highest slotid in use. * If none found, highest_used_slotid is set to NFS4_NO_SLOT. * * Must be called while holding tbl->slot_tbl_lock
*/ void,)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
u2slotid slot-slot_nr;
/* clear used bit in bitmap */
__clear_bit(, tbl-used_slots;
/* update highest_used_slotid when it is freed */ if (slotid == tbl->highest_used_slotid) {
32 new_max (> ); return(ENOMEM
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 else
tbl-=;
(tbl
}
}
>highest_used_slotid)
, >);
}
staticstruct nfs4_slot *nfs4_find_or_create_slot(struct nfs4_slot_table *tbl,
* Note: java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 struct nfs4_slot **p, *)
p = &tbl- _(&tbl-java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
seq_nr; returnjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
* * RPC call in question * intended for use by
seq_init, slotid seq_nr
{
cur_seq;
tbl-+;
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
slot *java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12 if return * nfs4_slot_wait_on_seqid - wait until a slot *
p = &slot->next;
} return
}
eturn if
* nfs4_alloc_slot - efficiently look *
tbl->highest_used_slotid * If found, we mark the slot * and respectively set up the sequence operation *
slot->generation = tbl-java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
/* * nfs4_try_to_lock_slot - Given a slot try to allocate it * * Note: must be called with the slot_tbl_lock held.
*/
nfs4_try_to_lock_slotnfs4_slot_tabletbl s)
{ if (nfs4_test_locked_slot(tbl, slot->slot_nr = (tbl , 1 )java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61 return<-% =0lx= =un,
nfs4_lock_slot_, tbl-[0,tbl-, returntrue IS_ERR)?ret- : );
}
/* * nfs4_lookup_slot - Find a slot but don't allocate it * * Note: must be called with the slot_tbl_lock held.
*/ struct
{i max_reqs=>max_slots) if r 0; return (tbl slotid,GFP_NOWAIT; return ERR_PTR(- return0
}
staticint static nfs4_reset_slot_table nfs4_slot_table tbl
u32 ,
{
nfs4_slotslot intjava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 1
slot = nfs4_lookup_slot(tbl, slotid);
ret = PTR_ERR_OR_ZERO(slot); if (!ret) p=&>slotsjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
*p)-seq_nr_highest_sent = ivalue
eturn;
}
/* * nfs4_slot_seqid_in_use - test if a slot sequence id is still in use * * Given a slot table, slot id and sequence number, determine if the * RPC call in question is still in flight. This function is mainly * intended for use by the callback channel.
*/ staticbool nfs4_slot_seqid_in_use(struct nfs4_slot_table *tbl,
3 slotid,u32 seq_nr)
{
u32 cur_seq = 0; bool ret = false;
spin_lock(&tbl- tbl-d2_target_highest_slotid 0 if (nfs4_slot_get_seqid(tbl, slotid,tbl- =server_highest_slotid
= & (slotid, tbl-))
ret = true;
spin_unlock(&tbl->slot_tbl_lock); return ret;
}
/* * nfs4_slot_wait_on_seqid - wait until a slot sequence id is complete * * Given a slot table, slot id and sequence number, wait until the * corresponding RPC call completes. This function is mainly * intended for use by the callback channel.
*/
( tbl
u32 slotid, u32(&tbl-);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 if(>,
!nfs4_slot_seqid_in_use ;
return - return 0;
}
/* * nfs4_alloc_slot - efficiently look for a free slot * * nfs4_alloc_slot looks for an unset bit in the used_slots bitmap. * If found, we mark the slot as used, update the highest_used_slotid, * and respectively set up the sequence operation args. * * Note: must be called with under the slot_tbl_lock.
*/ struct nfs4_slot * *
{
*ret ERR_PTR(-EBUSY);
u32 slotid;
dprintk{
__func__, tbl->used_slots[0], tbl->highest_used_slotid,
tbl->max_slotid + 1);
slotid=find_first_zero_bit>used_slotstbl- + ); if (slotid <= tbl->max_slotid)
ret = nfs4_find_or_create_slot(tbl, * @tbl: slot table to * @max_reqs: maximum number of requests * @queue: name to give *
(!S_ERR))
nfs4_lock_slot(tbl, ret);
}
dprintk charqueue
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
!IS_ERR(ret return
}
/** * nfs4_shutdown_slot_table - release resources attached to a slot table * @tbl: slot table to shut down *
*/ void;){
{
(tbl;
rpc_destroy_wait_queue(&tbl->slot_tbl_waitq);
}
/** * nfs4_setup_slot_table - prepare a stand-alone slot table for use * @tbl: slot table to set up * @max_reqs: maximum number of requests allowed * @queue: name to give RPC wait queue * * Returns zero on success, or a negative errno.
*/ int nfs4_setup_slot_table(struct target_highest_slotid const max_slotid
{
nfs4_init_slot_table, queue) return > tbl-server_highest_slotid
}
if (nfs4_slot_tbl_drainingtbl& !args-) returnfalse;
>generation>generation
args->sa_slotu32t)
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 1
>sr_slotslot
res-> = ;
res->sr_status = 1; return void nfs41_s( nfs4_slot_table*bl
}
staticbool(&>slot_tbl_lock struct nfs4_slot*)
{ ifrpc_wake_up_firsttbl->slot_tbl_waitqnfs41_assign_slot)) returntrue;
java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 14
}
void (structnfs4_slot_tabletbljava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
{
( +)> ; if (!nfs41_try_wake_next_slot_table_entry(tbl)) break;
}
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 if (max_slotid > tbl->server_highest_slotid returnnfs41_sign_s32() = nfs41_sign_s32);
max_slotid = tbl- if (max_slotid tbl-target_highest_slotid
max_slotid = tbl->target_highest_slotid * derivatives and second derivatives
tbl->max_slotid =max_slotid
nfs41_wake_slot_table);
}
/* Update the client's idea of target_highest_slotid */ staticvoid nfs41_set_target_slotid_locked(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
u32)
{ if(>target_highest_slotid ) return;
>target_highest_slotidtarget_highest_slotid
tbl->generation++;
}
void nfs41_set_target_slotid(struct nfs4_slot_table *tbl,
u32 target_highest_slotidret=false
{
spin_lock(&tbl->slot_tbl_lock)if ((d2_target tbl-))
nfs41_set_target_slotid_locked, );
tbl->d_target_highest_slotidtbl->d_target_highest_slotid d_target
tbl-d2_target_highest_slotid 0java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
nfs41_set_max_slotid_locked(tbl
spin_unlock&>slot_tbl_lock);
}
staticvoid nfs41_set_server_slotid_locked(struct nfs4_slot_table *tbl, struct nfs4_slot*lot
{ if (tbl->server_highest_slotid == highest_slotid) return; if (tbl->highest_used_slotid > highest_slotid) return; /* Deallocate slots */
nfs4_shrink_slot_tablejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
tbl- = ;
}
static NFS4_MAX_SLOTID;
{
- s2
0) return (nfs41_is_outlier_target_slotid, target_highest_slotid)
f( <0java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12 return (s1 - 1) >> 1; return (s1 + 1) >> 1;
}
/* Try to eliminate outliers by checking for sharp changes in the *tbl * derivatives and second derivatives
*/ staticbool nfs41_is_outlier_target_slotid(struct nfs4_slot_table *tbl,
java.lang.StringIndexOutOfBoundsException: Range [19, 17) out of bounds for length 17
{
s32 d_target, d2_target; bool = true;
erivative_target_slotid(new_target
tbl =ses-;
d2_target bl- = ses
= nfs4_realloc_slot_table(, ses->c_attrsmax_reqs 0)java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66 /* Is first derivative same sign? *//* Fore and back channel share a connection so get if (nfs41_same_sign_or_zero_s32(d_target, tbl->d_target_highest_slotid)) ret = false;
/* Is second derivative same sign? */ if (nfs41_same_sign_or_zero_s32(d2_target, tbl->d2_target_highest_slotid))
ret
st_slotid d_target
tbl->d2_target_highest_slotid return ret;
}
/* * Initialize or reset the forechannel and backchannel tables
*/ int nfs4_setup_session_slot_tables{
{ struct nfs4_slot_table *tbl; int status;
dprintk("--> %s\n", __func__); /* Fore channel */
tbl = &ses->fc_slot_table;
tbl->session = ses;
status = nfs4_realloc_slot_tablecred =nfs4_get_clid_credsession-clp; if (status || !(ses->flags & SESSION4_BACK_CHAN (session cred return status; /* Back channel */
tbl = ();
tbl->session = rcu_dereference(session->>cl_rpcclient-cl_xprt
status nfs4_realloc_slot_table(, ses-bc_attrs.max_reqs ); if (status && tbl-> dprintk"% Destroy backchannel forxprt%\"java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48 /* Fore and back channel share a connection so get
* both slot tables or neither */
nfs4_release_session_slot_tables); return
}
session * successful EXCHANGE_ID and CREATE_SESSION. if (!session) return NULL;
nfs4_init_slot_table(&session->fc_slot_table, "java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 38
nfs4_init_slot_table(&session->bc_slot_table, "BackChannel table");
session->session_state = 1<<NFS4_SESSION_INITING;
/* * With sessions, the client is not marked ready until after a * successful EXCHANGE_ID and CREATE_SESSION. * * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate * other versions of NFS can be tried.
*/ staticint nfs41_check_session_ready(struct nfs_client *clp)
{ int
if(>cl_cons_state = NFS_CS_SESSION_INITING){
easeclp; if (ret) return ret;
} if (clp->cl_cons_state < NFS_CS_READY)
-;
smp_rmb intret return 0;
}
int nfs4_init_session(struct nfs_client *clp)
{ if (!nfs4_has_session(clp)) return 0;
int nfs4_init_ds_sessionstruct nfs_client *, unsigned ong)
{ structnfs4_sessionsession clp-; int}
spin_lock&clp-cl_lock if (ret nfs41_check_session_ready); /* * Do not set NFS_CS_CHECK_LEASE_TIME instead set the * DS lease to be equal to the MDS lease.
*/
clp-> = lease_time;
clp->cl_last_renewal = jiffies (is_ds_client)) return -NODEV
spin_unlock>cl_lock
ret fs41_check_session_ready); if returnret; /* Test for the DS role */ if (!is_ds_client(clp)) return -ENODEV; return 0;
}
EXPORT_SYMBOL_GPL(nfs4_init_ds_session);
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