[PATCH] x86_64: Fix change_page_attr cache flushing
Noticed by Terence Ripperda Undo wrong change in global_flush_tlb. We need to flush the caches in all cases, not just when pages were reverted. This was a bogus optimization added earlier, but it was wrong. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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arch/x86_64/mm
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@ -220,8 +220,6 @@ void global_flush_tlb(void)
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down_read(&init_mm.mmap_sem);
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df = xchg(&df_list, NULL);
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up_read(&init_mm.mmap_sem);
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if (!df)
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return;
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flush_map((df && !df->next) ? df->address : 0);
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for (; df; df = next_df) {
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next_df = df->next;
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