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device-dax/kmem: use struct_size()
author
Dan Williams
<dan.j.williams@intel.com>
Tue, 15 Dec 2020 03:04:43 +0000
(19:04 -0800)
committer
Linus Torvalds
<torvalds@linux-foundation.org>
Tue, 15 Dec 2020 20:13:38 +0000
(12:13 -0800)
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>
drivers/dax/kmem.c
patch
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diff --git
a/drivers/dax/kmem.c
b/drivers/dax/kmem.c
index
b4368c5
..
403ec42
100644
(file)
--- a/
drivers/dax/kmem.c
+++ b/
drivers/dax/kmem.c
@@
-61,7
+61,7
@@
static int dev_dax_kmem_probe(struct dev_dax *dev_dax)
return -EINVAL;
}
- data = kzalloc(s
izeof(*data) + sizeof(struct resource *) * dev_dax->nr_range
, GFP_KERNEL);
+ data = kzalloc(s
truct_size(data, res, dev_dax->nr_range)
, GFP_KERNEL);
if (!data)
return -ENOMEM;