mm: page_alloc: add missing hooks to bulk allocation path

The bulk allocation path in alloc_pages_bulk_noprof() currently misses
trace_mm_page_alloc() and kmsan_alloc_page() calls, leaving bulk-allocated
pages invisible to ftrace/BPF/perf and leaving KMSAN shadow memory stale.

Add both calls in the bulk loop to match the standard allocation path,
placing them before set_page_refcounted() for consistency.  The gfp mask
passed to kmsan_alloc_page() is stripped of __GFP_RECLAIM because the bulk
loop runs under the PCP spinlock, and KMSAN's stack depot allocation must
not sleep.

Both are no-ops when their respective features are disabled, so there
is no overhead in production kernels.

Link: https://lore.kernel.org/20260908102356.344075-1-liuqiqi@kylinos.cn
Signed-off-by: Qiqi Liu <liuqiqi@kylinos.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Suggested-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Reviewed-by: Gregory Price (Meta) <gourry@gourry.net>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Brendan Jackman <brendan.jackman@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Suren Baghdasaryan <surenb@google.com>

0 files changed, 0 insertions, 0 deletions