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23 October 2021, 00:29:24 UTC
Revision 44fc80573cc760a7154f41fd0a958ee10eba1a81 authored by David Rientjes on 12 March 2015, 23:25:54 UTC, committed by Linus Torvalds on 13 March 2015, 01:46:07 UTC 
mm, hugetlb: close race when setting PageTail for gigantic pages
 
Now that gigantic pages are dynamically allocatable, care must be taken to
ensure that p->first_page is valid before setting PageTail.

If this isn't done, then it is possible to race and have compound_head()
return NULL.

Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent e009d5d
History
Tip revision: 44fc80573cc760a7154f41fd0a958ee10eba1a81 authored by David Rientjes on 12 March 2015, 23:25:54 UTC
mm, hugetlb: close race when setting PageTail for gigantic pages
Tip revision: 44fc805
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