[PATCH 10/15] __d_add(): don't drop/regain ->d_lock

[Al Viro]

From: Al Viro <v...@zeniv.linux.org.uk>

Signed-off-by: Al Viro <v...@zeniv.linux.org.uk>
---
 fs/dcache.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/fs/dcache.c b/fs/dcache.c
index e9de4d9..33cad8a 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2363,11 +2363,19 @@ EXPORT_SYMBOL(d_rehash);
 
 static inline void __d_add(struct dentry *dentry, struct inode *inode)
 {
+       spin_lock(&dentry->d_lock);
        if (inode) {
-               __d_instantiate(dentry, inode);
+               unsigned add_flags = d_flags_for_inode(inode);
+               hlist_add_head(&dentry->d_u.d_alias, &inode->i_dentry);
+               raw_write_seqcount_begin(&dentry->d_seq);
+               __d_set_inode_and_type(dentry, inode, add_flags);
+               raw_write_seqcount_end(&dentry->d_seq);
+               __fsnotify_d_instantiate(dentry);
+       }
+       _d_rehash(dentry);
+       spin_unlock(&dentry->d_lock);
+       if (inode)
                spin_unlock(&inode->i_lock);
-       }
-       d_rehash(dentry);
 }
 
 /**
-- 
2.8.0.rc3