fs: improve scalability of pseudo filesystems

Regardless of how much we possibly try to scale dcache, there is likely
always going to be some fundamental contention when adding or removing children
under the same parent. Pseudo filesystems do not seem need to have connected
dentries because by definition they are disconnected.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index aca8806fa206..9d92b33da8a0 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -102,7 +102,7 @@ struct file *anon_inode_getfile(const char *name,
         this.name = name;
         this.len = strlen(name);
         this.hash = 0;
-        path.dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
+        path.dentry = d_alloc_pseudo(anon_inode_mnt->mnt_sb, &this);
         if (!path.dentry)
                 goto err_module;