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authorJoao Martins <joao.m.martins@oracle.com>2022-01-14 14:04:29 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2022-01-15 16:30:25 +0200
commit09b80137033dbc5f1d197e99116527c0f8d253f2 (patch)
treed5855f5d872f684f713509da98ad436255a73a2a /drivers/dax
parentb9b5777f09be84d0de472ded2253d2f5101427f2 (diff)
device-dax: use struct_size()
Use the struct_size() helper for the size of a struct with variable array member at the end, rather than manually calculating it. Link: https://lkml.kernel.org/r/20211202204422.26777-7-joao.m.martins@oracle.com Suggested-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Joao Martins <joao.m.martins@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Jane Chu <jane.chu@oracle.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/dax')
-rw-r--r--drivers/dax/device.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/dax/device.c b/drivers/dax/device.c
index 0b82159b3564..038816b91af6 100644
--- a/drivers/dax/device.c
+++ b/drivers/dax/device.c
@@ -404,8 +404,9 @@ int dev_dax_probe(struct dev_dax *dev_dax)
return -EINVAL;
if (!pgmap) {
- pgmap = devm_kzalloc(dev, sizeof(*pgmap) + sizeof(struct range)
- * (dev_dax->nr_range - 1), GFP_KERNEL);
+ pgmap = devm_kzalloc(dev,
+ struct_size(pgmap, ranges, dev_dax->nr_range - 1),
+ GFP_KERNEL);
if (!pgmap)
return -ENOMEM;
pgmap->nr_range = dev_dax->nr_range;