Commit 66d4218f authored by Gustavo A. R. Silva's avatar Gustavo A. R. Silva Committed by Anna Schumaker

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: default avatarGustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent cd6c84d8
...@@ -810,8 +810,7 @@ static struct rpcrdma_sendctx *rpcrdma_sendctx_create(struct rpcrdma_ia *ia) ...@@ -810,8 +810,7 @@ static struct rpcrdma_sendctx *rpcrdma_sendctx_create(struct rpcrdma_ia *ia)
{ {
struct rpcrdma_sendctx *sc; struct rpcrdma_sendctx *sc;
sc = kzalloc(sizeof(*sc) + sc = kzalloc(struct_size(sc, sc_sges, ia->ri_max_send_sges),
ia->ri_max_send_sges * sizeof(struct ib_sge),
GFP_KERNEL); GFP_KERNEL);
if (!sc) if (!sc)
return NULL; return NULL;
......
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