[PATCH] tmpfs preempt count panic
Just unearthed another of my warcrimes: reading a 17-page sparse file, I mean holey file, hits the in_interrupt panic in do_exit on a current highmem kernel (but 2.6.7 is okay). Fix mismatched preempt count from shmem_swp_alloc's swapindex hole case by mapping an empty_zero_page. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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