mm: ksm: fix a typo in comment "alreaady"->"already"
There is a typo in comment, fix it. Signed-off-by: Ethon Paul <ethp@qq.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Ralph Campbell <rcampbell@nvidia.com> Link: http://lkml.kernel.org/r/20200410162427.13927-1-ethp@qq.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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mm/ksm.c
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mm/ksm.c
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@ -612,7 +612,7 @@ static struct stable_node *alloc_stable_node_chain(struct stable_node *dup,
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* Move the old stable node to the second dimension
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* queued in the hlist_dup. The invariant is that all
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* dup stable_nodes in the chain->hlist point to pages
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* that are wrprotected and have the exact same
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* that are write protected and have the exact same
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* content.
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*/
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stable_node_chain_add_dup(dup, chain);
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@ -1148,7 +1148,7 @@ static int replace_page(struct vm_area_struct *vma, struct page *page,
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/*
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* No need to check ksm_use_zero_pages here: we can only have a
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* zero_page here if ksm_use_zero_pages was enabled alreaady.
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* zero_page here if ksm_use_zero_pages was enabled already.
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*/
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if (!is_zero_pfn(page_to_pfn(kpage))) {
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get_page(kpage);
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@ -1608,7 +1608,7 @@ again:
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* continue. All KSM pages belonging to the
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* stable_node dups in a stable_node chain
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* have the same content and they're
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* wrprotected at all times. Any will work
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* write protected at all times. Any will work
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* fine to continue the walk.
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*/
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tree_page = get_ksm_page(stable_node_any,
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@ -1843,7 +1843,7 @@ again:
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* continue. All KSM pages belonging to the
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* stable_node dups in a stable_node chain
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* have the same content and they're
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* wrprotected at all times. Any will work
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* write protected at all times. Any will work
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* fine to continue the walk.
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*/
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tree_page = get_ksm_page(stable_node_any,
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@ -2001,7 +2001,7 @@ static void stable_tree_append(struct rmap_item *rmap_item,
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* duplicate. page_migration could break later if rmap breaks,
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* so we can as well crash here. We really need to check for
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* rmap_hlist_len == STABLE_NODE_CHAIN, but we can as well check
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* for other negative values as an undeflow if detected here
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* for other negative values as an underflow if detected here
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* for the first time (and not when decreasing rmap_hlist_len)
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* would be sign of memory corruption in the stable_node.
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*/
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