diff options
| -rw-r--r-- | fs/namei.c | 30 |
1 files changed, 12 insertions, 18 deletions
@@ -539,14 +539,6 @@ err_unlock: return -ECHILD; } -/* Try to drop out of rcu-walk mode if we were in it, otherwise do nothing. */ -static inline int nameidata_drop_rcu_last_maybe(struct nameidata *nd) -{ - if (likely(nd->flags & LOOKUP_RCU)) - return nameidata_drop_rcu_last(nd); - return 0; -} - /** * release_open_intent - free up open intent resources * @nd: pointer to nameidata @@ -1339,7 +1331,7 @@ static int link_path_walk(const char *name, struct nameidata *nd) while (*name=='/') name++; if (!*name) - goto return_base; + return 0; if (nd->depth) lookup_flags = LOOKUP_FOLLOW | (nd->flags & LOOKUP_CONTINUE); @@ -1448,7 +1440,7 @@ last_component: } else follow_dotdot(nd); } - goto return_base; + return 0; } err = do_lookup(nd, &this, &next, &inode); if (err) @@ -1471,13 +1463,10 @@ last_component: if (!nd->inode->i_op->lookup) break; } - goto return_base; + return 0; lookup_parent: nd->last = this; nd->last_type = type; -return_base: - if (nameidata_drop_rcu_last_maybe(nd)) - return -ECHILD; return 0; out_dput: if (!(nd->flags & LOOKUP_RCU)) @@ -1598,10 +1587,15 @@ static int path_lookupat(int dfd, const char *name, if (nd->flags & LOOKUP_RCU) { /* RCU dangling. Cancel it. */ - nd->flags &= ~LOOKUP_RCU; - nd->root.mnt = NULL; - rcu_read_unlock(); - br_read_unlock(vfsmount_lock); + if (!retval) { + if (nameidata_drop_rcu_last(nd)) + retval = -ECHILD; + } else { + nd->flags &= ~LOOKUP_RCU; + nd->root.mnt = NULL; + rcu_read_unlock(); + br_read_unlock(vfsmount_lock); + } } if (!retval) |