zswap can support multiple swapfiles. So we need to check
all zbud pool pages in zswap.
Signed-off-by: Cai Liu <cai.liu@xxxxxxxxxxx>
---
mm/zswap.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/mm/zswap.c b/mm/zswap.c
index d93afa6..2438344 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -291,7 +291,6 @@ static void zswap_free_entry(struct zswap_tree *tree,
zbud_free(tree->pool, entry->handle);
zswap_entry_cache_free(entry);
atomic_dec(&zswap_stored_pages);
- zswap_pool_pages = zbud_get_pool_size(tree->pool);
}
/* caller must hold the tree lock */
@@ -405,10 +404,24 @@ cleanup:
/*********************************
* helpers
**********************************/
+static u64 get_zswap_pool_pages(void)
+{
+ int i;
+ u64 pool_pages = 0;
+
+ for (i = 0; i < MAX_SWAPFILES; i++) {
+ if (zswap_trees[i])
+ pool_pages += zbud_get_pool_size(zswap_trees[i]->pool);
+ }
+ zswap_pool_pages = pool_pages;
+
+ return pool_pages;
+}
+
static bool zswap_is_full(void)
{
return (totalram_pages * zswap_max_pool_percent / 100 <
- zswap_pool_pages);
+ get_zswap_pool_pages());
}
/*********************************
@@ -716,7 +729,6 @@ static int zswap_frontswap_store(unsigned type, pgoff_t offset,
/* update stats */
atomic_inc(&zswap_stored_pages);
- zswap_pool_pages = zbud_get_pool_size(tree->pool);
return 0;
--
1.7.10.4
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