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author | Gustavo A. R. Silva | 2019-01-31 01:51:48 +0100 |
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committer | David S. Miller | 2019-02-02 00:12:29 +0100 |
commit | 1f533ba6d50d0e7a104d1a2c1e1a28ee0b919a90 (patch) | |
tree | c2cf86cb0a4b7b3fab69c8fd31391caf6af1422d /Documentation | |
parent | nfp: use struct_size() in kzalloc() (diff) | |
download | kernel-qcow2-linux-1f533ba6d50d0e7a104d1a2c1e1a28ee0b919a90.tar.gz kernel-qcow2-linux-1f533ba6d50d0e7a104d1a2c1e1a28ee0b919a90.tar.xz kernel-qcow2-linux-1f533ba6d50d0e7a104d1a2c1e1a28ee0b919a90.zip |
ipv4: fib: 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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
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