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authorGustavo A. R. Silva <gustavo@embeddedor.com>2019-01-30 18:46:22 -0600
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-05-28 09:28:49 -0400
commit66d4218f9902132a48f29607ca741076ab3671a1 (patch)
tree874fdcd972fd5bfc3ddb0b4cd616d8425f63f5cf /net/sunrpc/xprtrdma
parentcd6c84d8f0cdc911df435bb075ba22ce3c605b07 (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/xprtrdma')
-rw-r--r--net/sunrpc/xprtrdma/verbs.c3
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;