Commit 1c16b3d5 authored by Chris Packham's avatar Chris Packham Committed by Jonathan Corbet
Browse files

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: default avatarChris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Reviewed-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 094ef1c9

Documentation/core-api/memory-allocation.rst

+2 −1
Original line number Diff line number Diff line
@@ -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

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