37dcc69ad1
Introduce a new mempool_alloc_preallocated API that asks the mempool to only use the elements preallocated during the mempool's creation when allocating and to not attempt allocating new ones from the underlying allocator. This API is required to test the KASAN poisoning/unpoisoning functionality in KASAN tests, but it might be also useful on its own. Link: https://lkml.kernel.org/r/a14d809dbdfd04cc33bcacc632fee2abd6b83c00.1703024586.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Cc: Alexander Lobakin <alobakin@pm.me> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Breno Leitao <leitao@debian.org> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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