The __swapcache_free is almost same with swapcache_free
but only difference is that caller should pass stable swap_info_struct.
This function will be used by next patchsets.
Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx>
---
mm/swapfile.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 2966978..33ebdd5 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -634,20 +634,26 @@ void swap_free(swp_entry_t entry)
}
}
+
+void __swapcache_free(struct swap_info_struct *p,
+ swp_entry_t entry, struct page *page)
+{
+ unsigned char count;
+ count = swap_entry_free(p, entry, SWAP_HAS_CACHE);
+ mem_cgroup_uncharge_swapcache(page, entry, count != 0);
+}
+
/*
* Called after dropping swapcache to decrease refcnt to swap entries.
*/
void swapcache_free(swp_entry_t entry, struct page *page)
{
struct swap_info_struct *p;
- unsigned char count;
p = swap_info_get(entry);
if (p) {
spin_lock(&p->lock);
- count = swap_entry_free(p, entry, SWAP_HAS_CACHE);
- if (page)
- mem_cgroup_uncharge_swapcache(page, entry, count != 0);
+ __swapcache_free(p, entry, page);
spin_unlock(&p->lock);
}
}
--
1.8.2.1
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