While nsfs dentries are never hashed and thus retain_dentry() will never
consider them for placing them on the LRU it isn't great to always have
to go and remember that. Raise DCACHE_DONTCACHE explicitly as a visual
marker that dentries aren't kept but freed immediately instead.
Signed-off-by: Christian Brauner <brauner@kernel.org>
---
fs/nsfs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/nsfs.c b/fs/nsfs.c
index 4e77eba0c8fc..0e3fe8fda5bf 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -589,6 +589,7 @@ static int nsfs_init_fs_context(struct fs_context *fc)
struct pseudo_fs_context *ctx = init_pseudo(fc, NSFS_MAGIC);
if (!ctx)
return -ENOMEM;
+ ctx->s_d_flags |= DCACHE_DONTCACHE;
ctx->ops = &nsfs_ops;
ctx->eops = &nsfs_export_operations;
ctx->dops = &ns_dentry_operations;
--
2.47.3