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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2007-07-26 19:41:08 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-26 20:35:17 +0200
commit3dd9fe8c397df68086e6a1b2160573abbe944813 (patch)
tree86dda41ade146e2a403151c7ba2f7e32a930bc63 /Documentation/sgi-ioc4.txt
parentmemory unplug: migration by kernel (diff)
downloadlinux-3dd9fe8c397df68086e6a1b2160573abbe944813.tar.xz
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memory unplug: isolate_lru_page fix
release_pages() in mm/swap.c changes page_count() to be 0 without removing PageLRU flag... This means isolate_lru_page() can see a page, PageLRU() && page_count(page)==0.. This is BUG. (get_page() will be called against count=0 page.) Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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