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mm/rmap: make rmap_walk to get the rmap_walk_control argument

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In each rmap traverse case, there is some difference so that we need
function pointers and arguments to them in order to handle these

For this purpose, struct rmap_walk_control is introduced in this patch,
and will be extended in following patch.  Introducing and extending are
separate, because it clarify changes.

Signed-off-by: Joonsoo Kim <[email protected]>
Reviewed-by: Naoya Horiguchi <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Hillf Danton <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Joonsoo Kim 2014-01-21 15:49:48 -08:00 • committed by Linus Torvalds
commit 051ac83adf
5 changed files with 27 additions and 21 deletions
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7
mm/migrate.c
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@ -199,7 +199,12 @@ out:
*/
static void remove_migration_ptes(struct page *old, struct page *new)
{
rmap_walk(new, remove_migration_pte, old);
struct rmap_walk_control rwc = {
.rmap_one = remove_migration_pte,
.arg = old,
};
rmap_walk(new, &rwc);
}
/*