Messages in this thread | | | Date | Tue, 5 Jan 2021 17:45:31 +0000 | From | Al Viro <> | Subject | Re: [PATCH v4] proc: Allow pid_revalidate() during LOOKUP_RCU |
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On Tue, Jan 05, 2021 at 04:50:05PM +0000, Al Viro wrote:
> struct dentry *d_find_alias_rcu(struct inode *inode) > { > struct hlist_head *l = &inode->i_dentry; > struct dentry *de = NULL; > > spin_lock(&inode->i_lock); > // ->i_dentry and ->i_rcu are colocated, but the latter won't be > // used without having I_FREEING set, which means no aliases left > if (inode->i_state & I_FREEING) { > spin_unlock(&inode->i_lock); > return NULL; > } > // we can safely access inode->i_dentry > if (hlist_empty(p)) {
if (hlist_empty(l)) {
obviously...
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