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authorNick Piggin <npiggin@suse.de>2008-02-09 01:15:19 +0100
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-09 03:57:39 +0100
commitb1d0e4f535e10775cffde922208b49629169aeaa (patch)
treec5fa68fb25ffd2485da5de236fcf2b67d9df3dfd /scripts
parentMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/... (diff)
downloadlinux-b1d0e4f535e10775cffde922208b49629169aeaa.tar.xz
linux-b1d0e4f535e10775cffde922208b49629169aeaa.zip
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>
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