From b7ab39f631f505edc2bbdb86620d5493f995c9da Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:32 +1100 Subject: fs: dcache scale dentry refcount Make d_count non-atomic and protect it with d_lock. This allows us to ensure a 0 refcount dentry remains 0 without dcache_lock. It is also fairly natural when we start protecting many other dentry members with d_lock. Signed-off-by: Nick Piggin --- fs/configfs/dir.c | 3 +-- fs/configfs/inode.c | 2 +- 2 files changed, 2 insertions(+), 3 deletions(-) (limited to 'fs/configfs') diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c index 20024a9..e9acea4 100644 --- a/fs/configfs/dir.c +++ b/fs/configfs/dir.c @@ -394,8 +394,7 @@ static void remove_dir(struct dentry * d) if (d->d_inode) simple_rmdir(parent->d_inode,d); - pr_debug(" o %s removing done (%d)\n",d->d_name.name, - atomic_read(&d->d_count)); + pr_debug(" o %s removing done (%d)\n",d->d_name.name, d->d_count); dput(parent); } diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c index 253476d..79b3776 100644 --- a/fs/configfs/inode.c +++ b/fs/configfs/inode.c @@ -253,7 +253,7 @@ void configfs_drop_dentry(struct configfs_dirent * sd, struct dentry * parent) spin_lock(&dcache_lock); spin_lock(&dentry->d_lock); if (!(d_unhashed(dentry) && dentry->d_inode)) { - dget_locked(dentry); + dget_locked_dlock(dentry); __d_drop(dentry); spin_unlock(&dentry->d_lock); spin_unlock(&dcache_lock); -- cgit v1.1