diff options
| author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2019-01-30 18:46:22 -0600 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-05-28 09:28:49 -0400 |
| commit | 66d4218f9902132a48f29607ca741076ab3671a1 (patch) | |
| tree | 874fdcd972fd5bfc3ddb0b4cd616d8425f63f5cf /net/sunrpc | |
| parent | cd6c84d8f0cdc911df435bb075ba22ce3c605b07 (diff) | |
xprtrdma: Use struct_size() in kzalloc()
One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:
struct foo {
int stuff;
struct boo entry[];
};
instance = kzalloc(sizeof(struct foo) + count * sizeof(struct boo), GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:
instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/xprtrdma/verbs.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index bef5eac8ab38..84bb37924540 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -810,8 +810,7 @@ static struct rpcrdma_sendctx *rpcrdma_sendctx_create(struct rpcrdma_ia *ia) { struct rpcrdma_sendctx *sc; - sc = kzalloc(sizeof(*sc) + - ia->ri_max_send_sges * sizeof(struct ib_sge), + sc = kzalloc(struct_size(sc, sc_sges, ia->ri_max_send_sges), GFP_KERNEL); if (!sc) return NULL; |