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fs: nfs: return per memcg count for xattr shrinkers 

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@hammerspace.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Cc: Frank van der Linden <fllinden@amazon.com>
Signed-off-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: Frank van der Linden <fllinden@amazon.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
zero-sugar-mainline-defconfig
Yang Shi 2020-09-27 04:42:20 -07:00 committed by Anna Schumaker
parent b4868b44c5
commit 5904c16d22
1 changed files with 2 additions and 2 deletions
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4
fs/nfs/nfs42xattr.c
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@ -881,7 +881,7 @@ 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);
}
@ -975,7 +975,7 @@ 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);
}