Commit ea808b4e authored by Miaohe Lin's avatar Miaohe Lin Committed by Linus Torvalds

mm/page_alloc.c: remove meaningless VM_BUG_ON() in pindex_to_order()

Patch series "Cleanups and fixup for page_alloc", v2.

This series contains cleanups to remove meaningless VM_BUG_ON(), use
helpers to simplify the code and remove obsolete comment.  Also we avoid
allocating highmem pages via alloc_pages_exact[_nid].  More details can be
found in the respective changelogs.

This patch (of 5):

It's meaningless to VM_BUG_ON() order != pageblock_order just after
setting order to pageblock_order.  Remove it.

Link: https://lkml.kernel.org/r/20210902121242.41607-1-linmiaohe@huawei.com
Link: https://lkml.kernel.org/r/20210902121242.41607-2-linmiaohe@huawei.comSigned-off-by: default avatarMiaohe Lin <linmiaohe@huawei.com>
Acked-by: default avatarMel Gorman <mgorman@techsingularity.net>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 084f7e23
......@@ -677,10 +677,8 @@ static inline int pindex_to_order(unsigned int pindex)
int order = pindex / MIGRATE_PCPTYPES;
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
if (order > PAGE_ALLOC_COSTLY_ORDER) {
if (order > PAGE_ALLOC_COSTLY_ORDER)
order = pageblock_order;
VM_BUG_ON(order != pageblock_order);
}
#else
VM_BUG_ON(order > PAGE_ALLOC_COSTLY_ORDER);
#endif
......
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