thp: put_page: recheck PageHead after releasing the compound_lock

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After releasing the compound_lock split_huge_page can still run and release the
page before put_page_testzero runs.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Andrea Arcangeli 2011-01-13 15:46:33 -08:00 • committed by Linus Torvalds

parent 9180706344

commit a95a82e96c

1 changed files with 6 additions and 2 deletions

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8

mm/swap.c

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