Messages in this thread Patches in this message | | | From | NeilBrown <> | Date | Mon, 31 Jul 2006 10:42:19 +1000 | Subject | [PATCH 007 of 11] knfsd: add svc_get |
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From: Greg Banks <gnb@melbourne.sgi.com>
knfsd: add svc_get() for those occasions when we need to temporarily bump up svc_serv->sv_nrthreads as a pseudo refcount.
Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de>
### Diffstat output ./fs/nfsd/nfssvc.c | 2 +- ./include/linux/sunrpc/svc.h | 11 +++++++++++ 2 files changed, 12 insertions(+), 1 deletion(-)
diff .prev/fs/nfsd/nfssvc.c ./fs/nfsd/nfssvc.c --- .prev/fs/nfsd/nfssvc.c 2006-07-28 15:01:38.000000000 +1000 +++ ./fs/nfsd/nfssvc.c 2006-07-31 10:20:49.000000000 +1000 @@ -200,7 +200,7 @@ int nfsd_create_serv(void) int err = 0; lock_kernel(); if (nfsd_serv) { - nfsd_serv->sv_nrthreads++; + svc_get(nfsd_serv); unlock_kernel(); return 0; } diff .prev/include/linux/sunrpc/svc.h ./include/linux/sunrpc/svc.h --- .prev/include/linux/sunrpc/svc.h 2006-07-31 10:14:54.000000000 +1000 +++ ./include/linux/sunrpc/svc.h 2006-07-31 10:20:49.000000000 +1000 @@ -71,6 +71,17 @@ struct svc_serv { }; /* + * We use sv_nrthreads as a reference count. svc_destroy() drops + * this refcount, so we need to bump it up around operations that + * change the number of threads. Horrible, but there it is. + * Should be called with the BKL held. + */ +static inline void svc_get(struct svc_serv *serv) +{ + serv->sv_nrthreads++; +} + +/* * Maximum payload size supported by a kernel RPC server. * This is use to determine the max number of pages nfsd is * willing to return in a single READ operation. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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