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Date: Fri, 24 May 2019 13:36:01 +0530 From: Sahitya Tummala <stummala@...eaurora.org> To: Andrew Morton <akpm@...ux-foundation.org>, Kirill Tkhai <ktkhai@...tuozzo.com>, Michal Hocko <mhocko@...e.com>, Johannes Weiner <hannes@...xchg.org>, Vladimir Davydov <vdavydov.dev@...il.com>, Yafang Shao <laoar.shao@...il.com>, Roman Gushchin <guro@...com>, Mel Gorman <mgorman@...hsingularity.net>, linux-mm@...ck.org, "Theodore Y. Ts'o" <tytso@....edu>, Jaegeuk Kim <jaegeuk@...nel.org>, Eric Biggers <ebiggers@...nel.org>, linux-fscrypt@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Sahitya Tummala <stummala@...eaurora.org> Subject: [PATCH] mm/vmscan.c: drop all inode/dentry cache from LRU 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@...eaurora.org> --- 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) -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
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