diff options
| author | Jeff Layton <jlayton@redhat.com> | 2010-07-20 22:10:22 +0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2010-07-23 16:51:26 +0400 |
| commit | ac77efbe2b4d2a1e571a4f1e5b6e47de72a7d737 (patch) | |
| tree | 2ebb9f5178a3b81e357f95966f1e2eb0269e8e35 /fs/nfsd | |
| parent | 628b368728e23188ac41b3f00411b02be8e697f1 (diff) | |
| download | linux-ac77efbe2b4d2a1e571a4f1e5b6e47de72a7d737.tar.xz | |
nfsd: just keep single lockd reference for nfsd
Right now, nfsd keeps a lockd reference for each socket that it has
open. This is unnecessary and complicates the error handling on
startup and shutdown. Change it to just do a lockd_up when starting
the first nfsd thread just do a single lockd_down when taking down the
last nfsd thread. Because of the strange way the sv_count is handled
this requires an extra flag to tell whether the nfsd_serv holds a
reference for lockd or not.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfsctl.c | 10 | ||||
| -rw-r--r-- | fs/nfsd/nfssvc.c | 25 |
2 files changed, 14 insertions, 21 deletions
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 9e8645a07fca..b1c5be85bea5 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -949,15 +949,8 @@ static ssize_t __write_ports_addfd(char *buf) if (err != 0) return err; - err = lockd_up(); - if (err != 0) { - svc_destroy(nfsd_serv); - return err; - } - err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); if (err < 0) { - lockd_down(); svc_destroy(nfsd_serv); return err; } @@ -982,9 +975,6 @@ static ssize_t __write_ports_delfd(char *buf) if (nfsd_serv != NULL) len = svc_sock_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT, toclose); - if (len >= 0) - lockd_down(); - kfree(toclose); return len; } diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index a631ea61f76a..8a556ff2e10d 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -186,8 +186,16 @@ static int nfsd_startup(unsigned short port, int nrservs) { int ret; + ret = lockd_up(); + if (ret) + return ret; ret = nfs4_state_start(); + if (ret) + goto out_lockd; nfsd_up = true; + return 0; +out_lockd: + lockd_down(); return ret; } @@ -201,6 +209,7 @@ static void nfsd_shutdown(void) */ if (!nfsd_up) return; + lockd_down(); nfs4_state_shutdown(); nfsd_up = false; } @@ -208,9 +217,6 @@ static void nfsd_shutdown(void) static void nfsd_last_thread(struct svc_serv *serv) { /* When last nfsd thread exits we need to do some clean-up */ - struct svc_xprt *xprt; - list_for_each_entry(xprt, &serv->sv_permsocks, xpt_list) - lockd_down(); nfsd_serv = NULL; nfsd_racache_shutdown(); nfsd_shutdown(); @@ -310,19 +316,11 @@ static int nfsd_init_socks(int port) if (error < 0) return error; - error = lockd_up(); - if (error < 0) - return error; - error = svc_create_xprt(nfsd_serv, "tcp", PF_INET, port, SVC_SOCK_DEFAULTS); if (error < 0) return error; - error = lockd_up(); - if (error < 0) - return error; - return 0; } @@ -400,6 +398,11 @@ int nfsd_set_nrthreads(int n, int *nthreads) return err; } +/* + * Adjust the number of threads and return the new number of threads. + * This is also the function that starts the server if necessary, if + * this is the first time nrservs is nonzero. + */ int nfsd_svc(unsigned short port, int nrservs) { |