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__d_add(): don't drop/regain ->d_lock

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2016-04-14 19:40:56 -04:00
parent 1936386ea9
commit 0568d705b0
1 changed files with 11 additions and 3 deletions
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14
fs/dcache.c
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@ -2366,11 +2366,19 @@ 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);
spin_unlock(&inode->i_lock);
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);
_d_rehash(dentry);
spin_unlock(&dentry->d_lock);
if (inode)
spin_unlock(&inode->i_lock);
}
/**