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nfs41: Backchannel: Refactor nfs4_reset_slot_table()

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Generalize nfs4_reset_slot_table() so it can be used to reset the
backchannel slot table in addition to the forechannel slot table.

Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
This commit is contained in:
Ricardo Labiaga 2009-04-01 09:23:31 -04:00 committed by Benny Halevy
parent 65fc64e547
commit b73dafa7ac
1 changed files with 27 additions and 11 deletions
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38
fs/nfs/nfs4proc.c
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@ -4370,19 +4370,21 @@ int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
return status;
}
/* Reset a slot table */
static int nfs4_reset_slot_table(struct nfs4_session *session)
/*
* Reset a slot table
*/
static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, int max_slots,
int old_max_slots, int ivalue)
{
struct nfs4_slot_table *tbl = &session->fc_slot_table;
int i, max_slots = session->fc_attrs.max_reqs;
int old_max_slots = session->fc_slot_table.max_slots;
int i;
int ret = 0;
dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__,
session->fc_attrs.max_reqs, tbl);
dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__, max_slots, tbl);
/* Until we have dynamic slot table adjustment, insist
* upon the same slot table size */
/*
* Until we have dynamic slot table adjustment, insist
* upon the same slot table size
*/
if (max_slots != old_max_slots) {
dprintk("%s reset slot table does't match old\n",
__func__);
@ -4391,7 +4393,7 @@ static int nfs4_reset_slot_table(struct nfs4_session *session)
}
spin_lock(&tbl->slot_tbl_lock);
for (i = 0; i < max_slots; ++i)
tbl->slots[i].seq_nr = 1;
tbl->slots[i].seq_nr = ivalue;
tbl->highest_used_slotid = -1;
spin_unlock(&tbl->slot_tbl_lock);
dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
@ -4401,6 +4403,20 @@ out:
return ret;
}
/*
* Reset the forechannel and backchannel slot tables
*/
static int nfs4_reset_slot_tables(struct nfs4_session *session)
{
int status;
status = nfs4_reset_slot_table(&session->fc_slot_table,
session->fc_attrs.max_reqs,
session->fc_slot_table.max_slots,
1);
return status;
}
/*
* Initialize slot table
*/
@ -4639,7 +4655,7 @@ int nfs4_proc_create_session(struct nfs_client *clp, int reset)
/* Init or reset the fore channel */
if (reset)
status = nfs4_reset_slot_table(session);
status = nfs4_reset_slot_tables(session);
else
status = nfs4_init_slot_table(session);
dprintk("fore channel slot table initialization returned %d\n", status);