[PATCH] fs: nfs: return per memcg count for xattr shrinkers

[Yang Shi]

The list_lru_count() returns the pre node count, but the new xattr
shrinkers are memcg aware, so the shrinkers should return per memcg
count by calling list_lru_shrink_count() instead.  Otherwise over-shrink
might be experienced.  The problem was spotted by visual code
inspection.

Cc: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Cc: Anna Schumaker <anna.schumaker@xxxxxxxxxx>
Cc: Frank van der Linden <fllinden@xxxxxxxxxx>
Signed-off-by: Yang Shi <shy828301@xxxxxxxxx>
---
 fs/nfs/nfs42xattr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/nfs42xattr.c b/fs/nfs/nfs42xattr.c
index 86777996cfec..6e5f34916937 100644
--- a/fs/nfs/nfs42xattr.c
+++ b/fs/nfs/nfs42xattr.c
@@ -882,7 +882,7 @@ nfs4_xattr_cache_count(struct shrinker *shrink, struct shrink_control *sc)
 {
 	unsigned long count;
 
-	count = list_lru_count(&nfs4_xattr_cache_lru);
+	count = list_lru_shrink_count(&nfs4_xattr_cache_lru, sc);
 	return vfs_pressure_ratio(count);
 }
 
@@ -976,7 +976,7 @@ nfs4_xattr_entry_count(struct shrinker *shrink, struct shrink_control *sc)
 	lru = (shrink == &nfs4_xattr_large_entry_shrinker) ?
 	    &nfs4_xattr_large_entry_lru : &nfs4_xattr_entry_lru;
 
-	count = list_lru_count(lru);
+	count = list_lru_shrink_count(lru, sc);
 	return vfs_pressure_ratio(count);
 }
 
-- 
2.26.2