mm/page_alloc: use might_alloc()

...  instead of open coding it.  Completely equivalent code, just a notch
more meaningful when reading.

Link: https://lkml.kernel.org/r/20220605152539.3196045-1-daniel.vetter@ffwll.ch
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e008a3d..81fadb2 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5197,10 +5197,7 @@ static inline bool prepare_alloc_pages(gfp_t gfp_mask, unsigned int order,
                        *alloc_flags |= ALLOC_CPUSET;
        }
 
-       fs_reclaim_acquire(gfp_mask);
-       fs_reclaim_release(gfp_mask);
-
-       might_sleep_if(gfp_mask & __GFP_DIRECT_RECLAIM);
+       might_alloc(gfp_mask);
 
        if (should_fail_alloc_page(gfp_mask, order))
                return false;