[PATCH] mm/vmscan.c: drop all inode/dentry cache from LRU

[Sahitya Tummala]

This is important for the scenario where FBE (file based encryption)
is enabled. With FBE, the encryption context needed to en/decrypt a file
will be stored in inode and any inode that is left in the cache after
drop_caches is done will be a problem. For ex, in Android, drop_caches
will be used when switching work profiles.

Signed-off-by: Sahitya Tummala <stummala@xxxxxxxxxxxxxx>
---
 mm/vmscan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index d96c547..b48926f 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -730,7 +730,7 @@ void drop_slab_node(int nid)
 		do {
 			freed += shrink_slab(GFP_KERNEL, nid, memcg, 0);
 		} while ((memcg = mem_cgroup_iter(NULL, memcg, NULL)) != NULL);
-	} while (freed > 10);
+	} while (freed != 0);
 }
 
 void drop_slab(void)
-- 
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