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authorNick Piggin <npiggin@suse.de>2008-02-08 19:15:19 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-08 21:57:39 -0500
commitb1d0e4f535e10775cffde922208b49629169aeaa (patch)
treec5fa68fb25ffd2485da5de236fcf2b67d9df3dfd /Documentation/laptops
parent6a306e8b4c81a1c1f538e390d92bfe80d04b254c (diff)
mm: special mapping nopage
Convert special mapping install from nopage to fault. Because the "vm_file" is NULL for the special mapping, the generic VM code has messed up "vm_pgoff" thinking that it's an anonymous mapping and the offset does't matter. For that reason, we need to undo the vm_pgoff offset that got added into vmf->pgoff. [ We _really_ should clean that up - either by making this whole special mapping code just use a real file entry rather than that ugly array of "struct page" pointers, or by just making the VM code realize that even if vm_file is NULL it may not be a regular anonymous mmap. - Linus ] Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/laptops')
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