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mm/rmap: Constify the rmap_walk_control argument

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The rmap walking functions do not modify the rmap_walk_control, and
page_idle_clear_pte_refs() takes advantage of that to move construction
of the rmap_walk_control to compile time.  This lets us remove an
unclean cast.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2022-01-29 16:16:54 -05:00
parent 2f031c6f04
commit 84fbbe2189
5 changed files with 13 additions and 13 deletions
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include/linux/rmap.h
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@@ -292,8 +292,8 @@ struct rmap_walk_control {
bool (*invalid_vma)(struct vm_area_struct *vma, void *arg);
};
void rmap_walk(struct folio *folio, struct rmap_walk_control *rwc);
void rmap_walk_locked(struct folio *folio, struct rmap_walk_control *rwc);
void rmap_walk(struct folio *folio, const struct rmap_walk_control *rwc);
void rmap_walk_locked(struct folio *folio, const struct rmap_walk_control *rwc);
#else /* !CONFIG_MMU */