diff options
| author | Weston Andros Adamson <dros@netapp.com> | 2012-10-23 16:43:41 +0200 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-11-04 20:43:41 +0100 |
| commit | b25cd058f25ea2054351bbe501956002cd8ed4c5 (patch) | |
| tree | 85429bb1b4ef052235d981fcbb588a4afa5e3e93 | |
| parent | SUNRPC: remove BUG_ON in svc_xprt_received (diff) | |
| download | linux-b25cd058f25ea2054351bbe501956002cd8ed4c5.tar.xz linux-b25cd058f25ea2054351bbe501956002cd8ed4c5.zip | |
SUNRPC: remove BUG_ONs checking RPCSVC_MAXPAGES
Replace two bounds checking BUG_ON() calls with WARN_ON_ONCE() and resetting
the requested size to RPCSVC_MAXPAGES.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | net/sunrpc/svc.c | 4 | ||||
| -rw-r--r-- | net/sunrpc/svc_xprt.c | 5 |
2 files changed, 7 insertions, 2 deletions
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index 664979bee1d2..3bf5a54982ba 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -587,7 +587,9 @@ svc_init_buffer(struct svc_rqst *rqstp, unsigned int size, int node) * We assume one is at most one page */ arghi = 0; - BUG_ON(pages > RPCSVC_MAXPAGES); + WARN_ON_ONCE(pages > RPCSVC_MAXPAGES); + if (pages > RPCSVC_MAXPAGES) + pages = RPCSVC_MAXPAGES; while (pages) { struct page *p = alloc_pages_node(node, GFP_KERNEL, 0); if (!p) diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index be89bb67f0ae..35fa74b09f77 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -579,7 +579,10 @@ int svc_alloc_arg(struct svc_rqst *rqstp) /* now allocate needed pages. If we get a failure, sleep briefly */ pages = (serv->sv_max_mesg + PAGE_SIZE) / PAGE_SIZE; - BUG_ON(pages >= RPCSVC_MAXPAGES); + WARN_ON_ONCE(pages >= RPCSVC_MAXPAGES); + if (pages >= RPCSVC_MAXPAGES) + /* use as many pages as possible */ + pages = RPCSVC_MAXPAGES - 1; for (i = 0; i < pages ; i++) while (rqstp->rq_pages[i] == NULL) { struct page *p = alloc_page(GFP_KERNEL); |