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| author | Miaohe Lin <linmiaohe@huawei.com> | 2021-11-05 21:40:02 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-06 21:30:37 +0100 |
| commit | ea808b4efd15f6f019e9779617a166c9708856c1 (patch) | |
| tree | 86ecaca7bb36a87e43a1d05da15c05aa2427b081 /mm/page_alloc.c | |
| parent | mm/large system hash: avoid possible NULL deref in alloc_large_system_hash (diff) | |
| download | linux-ea808b4efd15f6f019e9779617a166c9708856c1.tar.xz linux-ea808b4efd15f6f019e9779617a166c9708856c1.zip | |
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.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: David 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 133dad9f4669..afaa544f129f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -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 |