From 7eff03aec917e17f733471d7e12c262c0c96409f Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 23 Dec 2008 15:21:43 -0500 Subject: NFSv4: Add a recovery marking scheme for state owners Signed-off-by: Trond Myklebust --- fs/nfs/nfs4state.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) (limited to 'fs/nfs/nfs4state.c') diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index a780518c5c3f..7dcca23167dd 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -832,6 +832,7 @@ static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_st clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags); return 0; } + set_bit(NFS_OWNER_RECLAIM_REBOOT, &state->owner->so_flags); set_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state); return 1; } @@ -840,6 +841,7 @@ static int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_s { set_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags); clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags); + set_bit(NFS_OWNER_RECLAIM_NOGRACE, &state->owner->so_flags); set_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state); return 1; } @@ -1043,14 +1045,25 @@ static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recov struct rb_node *pos; int status = 0; - /* Note: list is protected by exclusive lock on cl->cl_sem */ +restart: + spin_lock(&clp->cl_lock); for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) { struct nfs4_state_owner *sp = rb_entry(pos, struct nfs4_state_owner, so_client_node); + if (!test_and_clear_bit(ops->owner_flag_bit, &sp->so_flags)) + continue; + atomic_inc(&sp->so_count); + spin_unlock(&clp->cl_lock); status = nfs4_reclaim_open_state(sp, ops); - if (status < 0) - break; + if (status < 0) { + set_bit(ops->owner_flag_bit, &sp->so_flags); + nfs4_put_state_owner(sp); + nfs4_recovery_handle_error(clp, status); + return status; + } + nfs4_put_state_owner(sp); + goto restart; } - nfs4_recovery_handle_error(clp, status); + spin_unlock(&clp->cl_lock); return status; } -- cgit v1.2.3