tree b351181fffd09e06c0b3f185a0571cdb2860e870
parent f1518a088bde6aea49e7c472ed6ab96178fcba3e
author Hugh Dickins <hugh@veritas.com> 1182464865 +0100
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1182466512 -0700

page_mapping must avoid slub pages

Nicolas Ferre reports oops from flush_dcache_page() on ARM when using
SLUB: which reuses page->mapping as page->slab.  The page_mapping()
function, used by ARM and PA-RISC flush_dcache_page() implementations,
must not confuse SLUB pages with those which have page->mapping set.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Nicolas Ferre <nicolas.ferre@rfo.atmel.com>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>