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device-dax/kmem: use struct_size()

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Linus notes the kernel has had a nice helper for the 'size of struct with
variable array member at the end' operation for a couple years now, use
it.

Link: http://lore.kernel.org/r/CAHk-=wgNTLbvAD8mNTvh+GQyapNWeX20PXhU_+frqEvVq4298w@mail.gmail.com
Link: https://lkml.kernel.org/r/160288261564.3242821.6055291930923876456.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dan Williams 2020-12-14 19:04:43 -08:00 committed by Linus Torvalds
parent 045ab8c948
commit 7d18dd75a8
1 changed files with 1 additions and 1 deletions
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2
drivers/dax/kmem.c
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@ -61,7 +61,7 @@ static int dev_dax_kmem_probe(struct dev_dax *dev_dax)
return -EINVAL;
}
data = kzalloc(sizeof(*data) + sizeof(struct resource *) * dev_dax->nr_range, GFP_KERNEL);
data = kzalloc(struct_size(data, res, dev_dax->nr_range), GFP_KERNEL);
if (!data)
return -ENOMEM;