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knfsd: remove special handling for SIGHUP

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The special handling for SIGHUP in knfsd is a holdover from much
earlier versions of Linux where reloading the export table was
more expensive. That facility is not really needed anymore and
to my knowledge, is seldom-used.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Jeff Layton 2008-06-10 08:40:37 -04:00 • committed by J. Bruce Fields
parent 3dd98a3bcc
commit e096bbc648
1 changed files with 7 additions and 24 deletions
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31
fs/nfsd/nfssvc.c
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@ -44,11 +44,6 @@
* when not handling a request. i.e. when waiting * when not handling a request. i.e. when waiting
*/ */
#define SHUTDOWN_SIGS (sigmask(SIGKILL) | sigmask(SIGHUP) | sigmask(SIGINT) | sigmask(SIGQUIT)) #define SHUTDOWN_SIGS (sigmask(SIGKILL) | sigmask(SIGHUP) | sigmask(SIGINT) | sigmask(SIGQUIT))
/* if the last thread dies with SIGHUP, then the exports table is
* left unchanged ( like 2.4-{0-9} ). Any other signal will clear
* the exports table (like 2.2).
*/
#define SIG_NOCLEAN SIGHUP
extern struct svc_program nfsd_program; extern struct svc_program nfsd_program;
static void nfsd(struct svc_rqst *rqstp); static void nfsd(struct svc_rqst *rqstp);
@ -175,7 +170,6 @@ int nfsd_nrthreads(void)
return nfsd_serv->sv_nrthreads; return nfsd_serv->sv_nrthreads;
} }
static int killsig; /* signal that was used to kill last nfsd */
static void nfsd_last_thread(struct svc_serv *serv) static void nfsd_last_thread(struct svc_serv *serv)
{ {
/* When last nfsd thread exits we need to do some clean-up */ /* When last nfsd thread exits we need to do some clean-up */
@ -186,11 +180,9 @@ static void nfsd_last_thread(struct svc_serv *serv)
nfsd_racache_shutdown(); nfsd_racache_shutdown();
nfs4_state_shutdown(); nfs4_state_shutdown();
printk(KERN_WARNING "nfsd: last server has exited\n"); printk(KERN_WARNING "nfsd: last server has exited, flushing export "
if (killsig != SIG_NOCLEAN) { "cache\n");
printk(KERN_WARNING "nfsd: unexporting all filesystems\n"); nfsd_export_flush();
nfsd_export_flush();
}
} }
void nfsd_reset_versions(void) void nfsd_reset_versions(void)
@ -242,10 +234,9 @@ int nfsd_create_serv(void)
} }
atomic_set(&nfsd_busy, 0); atomic_set(&nfsd_busy, 0);
nfsd_serv = svc_create_pooled(&nfsd_program, nfsd_serv = svc_create_pooled(&nfsd_program, nfsd_max_blksize,
nfsd_max_blksize, nfsd_last_thread, nfsd, SIGINT,
nfsd_last_thread, THIS_MODULE);
nfsd, SIG_NOCLEAN, THIS_MODULE);
if (nfsd_serv == NULL) if (nfsd_serv == NULL)
err = -ENOMEM; err = -ENOMEM;
@ -490,17 +481,9 @@ nfsd(struct svc_rqst *rqstp)
atomic_dec(&nfsd_busy); atomic_dec(&nfsd_busy);
} }
if (err != -EINTR) { if (err != -EINTR)
printk(KERN_WARNING "nfsd: terminating on error %d\n", -err); printk(KERN_WARNING "nfsd: terminating on error %d\n", -err);
} else {
unsigned int signo;
for (signo = 1; signo <= _NSIG; signo++)
if (sigismember(&current->pending.signal, signo) &&
!sigismember(&current->blocked, signo))
break;
killsig = signo;
}
/* Clear signals before calling svc_exit_thread() */ /* Clear signals before calling svc_exit_thread() */
flush_signals(current); flush_signals(current);