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nfs41: nfs41_sequence_free_slot

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[from nfs41: separate free slot from sequence done]

Don't free the slot until after all rpc_restart_calls have completed.
Session reset will require more work.

As noted by Trond, since we're using rpc_wake_up_next rather than
rpc_wake_up() we must always wake up the next task in the queue
either by going through nfs4_free_slot, or just calling
rpc_wake_up_next if no slot is to be freed.

[nfs41: sequence res use slotid]
[nfs41: remove SEQ4_STATUS_USE_TK_STATUS]
[got rid of nfs4_sequence_res.sr_session, use nfs_client.cl_session instead]
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfs41: rpc_wake_up_next if sessions slot was not consumed.]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfs41: nfs4_sequence_free_slot use nfs_client for data server]
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Andy Adamson 2009-04-01 09:22:17 -04:00 committed by Benny Halevy
parent e2c4ab3ce2
commit 13615871cd
2 changed files with 35 additions and 0 deletions
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14
fs/nfs/internal.h
View File

@ -230,6 +230,20 @@ static inline int nfs4_has_session(const struct nfs_client *clp)
return 0;
}
#ifdef CONFIG_NFS_V4_1
extern void nfs41_sequence_free_slot(const struct nfs_client *,
struct nfs4_sequence_res *res);
#endif /* CONFIG_NFS_V4_1 */
static inline void nfs4_sequence_free_slot(const struct nfs_client *clp,
struct nfs4_sequence_res *res)
{
#ifdef CONFIG_NFS_V4_1
if (nfs4_has_session(clp))
nfs41_sequence_free_slot(clp, res);
#endif /* CONFIG_NFS_V4_1 */
}
/*
* Determine the device name as a string
*/

21
fs/nfs/nfs4proc.c
View File

@ -309,6 +309,27 @@ nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid)
free_slotid, tbl->highest_used_slotid);
}
void nfs41_sequence_free_slot(const struct nfs_client *clp,
struct nfs4_sequence_res *res)
{
struct nfs4_slot_table *tbl;
if (!nfs4_has_session(clp)) {
dprintk("%s: No session\n", __func__);
return;
}
tbl = &clp->cl_session->fc_slot_table;
if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) {
dprintk("%s: No slot\n", __func__);
/* just wake up the next guy waiting since
* we may have not consumed a slot after all */
rpc_wake_up_next(&tbl->slot_tbl_waitq);
return;
}
nfs4_free_slot(tbl, res->sr_slotid);
res->sr_slotid = NFS4_MAX_SLOT_TABLE;
}
/*
* nfs4_find_slot - efficiently look for a free slot
*