From: NeilBrown For the purposes of reboot recovery, we want to do some work during the transition period at the end of the grace period. Some of that work must be guaranteed to have a certain relationship with the end of the grace period, so we want to control the transition there. Our approach is to modify the in_grace() checks to consult a global variable instead of checking the time directly, to schedule the first run of the laundromat thread at the end of the grace period, and to set the global end-of-grace-period there. Signed-off-by: J. Bruce Fields Signed-off-by: Neil Brown Signed-off-by: Andrew Morton --- fs/nfsd/nfs4state.c | 24 +++++++++++++----------- 1 files changed, 13 insertions(+), 11 deletions(-) diff -puN fs/nfsd/nfs4state.c~nfsd4-grace-period-end fs/nfsd/nfs4state.c --- 25/fs/nfsd/nfs4state.c~nfsd4-grace-period-end Thu Jun 2 16:25:15 2005 +++ 25-akpm/fs/nfsd/nfs4state.c Thu Jun 2 16:25:15 2005 @@ -55,7 +55,7 @@ static time_t lease_time = 90; /* default lease time */ static time_t user_lease_time = 90; time_t boot_time; -static time_t grace_end = 0; +static int in_grace = 1; static u32 current_clientid = 1; static u32 current_ownerid = 1; static u32 current_fileid = 1; @@ -1908,6 +1908,13 @@ out: return status; } +static void +end_grace(void) +{ + dprintk("NFSD: end of grace period\n"); + in_grace = 0; +} + time_t nfs4_laundromat(void) { @@ -1922,6 +1929,8 @@ nfs4_laundromat(void) nfs4_lock_state(); dprintk("NFSD: laundromat service - starting\n"); + if (in_grace) + end_grace(); list_for_each_safe(pos, next, &client_lru) { clp = list_entry(pos, struct nfs4_client, cl_lru); if (time_after((unsigned long)clp->cl_time, (unsigned long)cutoff)) { @@ -3223,10 +3232,10 @@ __nfs4_state_start(void) boot_time = get_seconds(); grace_time = max(user_lease_time, lease_time); lease_time = user_lease_time; + in_grace = 1; printk("NFSD: starting %ld-second grace period\n", grace_time); - grace_end = boot_time + grace_time; laundry_wq = create_singlethread_workqueue("nfsd4"); - queue_delayed_work(laundry_wq, &laundromat_work, NFSD_LEASE_TIME*HZ); + queue_delayed_work(laundry_wq, &laundromat_work, grace_time*HZ); } int @@ -3247,14 +3256,7 @@ nfs4_state_start(void) int nfs4_in_grace(void) { - return get_seconds() < grace_end; -} - -void -set_no_grace(void) -{ - printk("NFSD: ERROR in reboot recovery. State reclaims will fail.\n"); - grace_end = get_seconds(); + return in_grace; } time_t _