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docs/core-api: memory-allocation: mention size helpers 

Mention struct_size(), array_size() and array3_size() in the same place
as kmalloc() and friends.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
alistair/sunxi64-5.5-dsi
Chris Packham 2019-10-25 08:50:16 +13:00 committed by Jonathan Corbet
parent 094ef1c9fb
commit 1c16b3d586
1 changed files with 2 additions and 1 deletions
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Documentation/core-api/memory-allocation.rst
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@ -91,7 +91,8 @@ The most straightforward way to allocate memory is to use a function
from the kmalloc() family. And, to be on the safe side it's best to use
routines that set memory to zero, like kzalloc(). If you need to
allocate memory for an array, there are kmalloc_array() and kcalloc()
helpers.
helpers. The helpers struct_size(), array_size() and array3_size() can
be used to safely calculate object sizes without overflowing.
The maximal size of a chunk that can be allocated with `kmalloc` is
limited. The actual limit depends on the hardware and the kernel