mm: accept memory in __alloc_pages_bulk()
authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Fri, 9 Aug 2024 11:48:49 +0000 (14:48 +0300)
committerAndrew Morton <akpm@linux-foundation.org>
Mon, 2 Sep 2024 03:26:06 +0000 (20:26 -0700)
commit4be9064baac0cdda43997e10cf9f706614057446
tree550f1496bb964573a6277f112dd509452cd4e8ea
parent3a80b8228f6ff0b3e56205231bef8ca69cb739d8
mm: accept memory in __alloc_pages_bulk()

Currently, the kernel only accepts memory in get_page_from_freelist(), but
there is another path that directly takes pages from free lists -
__alloc_page_bulk().  This function can consume all accepted memory and
will resort to __alloc_pages_noprof() if necessary.

Conditionally accepted in __alloc_pages_bulk().

The same issue may arise due to deferred page initialization.  Kick the
deferred initialization machinery before abandoning the zone, as the
kernel does in get_page_from_freelist().

Link: https://lkml.kernel.org/r/20240809114854.3745464-4-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
mm/page_alloc.c