mm/vmalloc: allow to set node and align in vrealloc

mm/vmalloc: allow to set node and align in vrealloc

Patch series "support large align and nid in Rust allocators", v15.

The series provides the ability for Rust allocators to set NUMA node and
large alignment.

This patch (of 4):

Reimplement vrealloc() to be able to set node and alignment should a user
need to do so.  Rename the function to vrealloc_node_align() to better
match what it actually does now and introduce macros for vrealloc() and
friends for backward compatibility.

With that change we also provide the ability for the Rust part of the
kernel to set node and alignment in its allocations.

Link: https://lkml.kernel.org/r/20250806124034.1724515-1-vitaly.wool@konsulko.se
Link: https://lkml.kernel.org/r/20250806124108.1724561-1-vitaly.wool@konsulko.se
Signed-off-by: Vitaly Wool <vitaly.wool@konsulko.se>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Jann Horn <jannh@google.com>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>