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[RFC,v4,24/69] merging pick_link() with get_link(), part 6

Message ID 20200313235357.2646756-24-viro@ZenIV.linux.org.uk (mailing list archive)
State New, archived
Headers show
Series [RFC,v4,01/69] do_add_mount(): lift lock_mount/unlock_mount into callers | expand

Commit Message

Al Viro March 13, 2020, 11:53 p.m. UTC 
From: Al Viro <viro@zeniv.linux.org.uk>

move the only remaining call of get_link() into pick_link()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/namei.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)
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Patch

diff --git a/fs/namei.c b/fs/namei.c
index 04a76f6dd3fe..969b99a88631 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1793,14 +1793,14 @@  static inline int handle_dots(struct nameidata *nd, int type)
 	return 0;
 }
 
-static int pick_link(struct nameidata *nd, struct path *link,
+static const char *pick_link(struct nameidata *nd, struct path *link,
 		     struct inode *inode, unsigned seq)
 {
 	int error;
 	struct saved *last;
 	if (unlikely(nd->total_link_count++ >= MAXSYMLINKS)) {
 		path_to_nameidata(link, nd);
-		return -ELOOP;
+		return ERR_PTR(-ELOOP);
 	}
 	if (!(nd->flags & LOOKUP_RCU)) {
 		if (link->mnt == nd->path.mnt)
@@ -1821,7 +1821,7 @@  static int pick_link(struct nameidata *nd, struct path *link,
 		}
 		if (error) {
 			path_put(link);
-			return error;
+			return ERR_PTR(error);
 		}
 	}
 
@@ -1830,7 +1830,7 @@  static int pick_link(struct nameidata *nd, struct path *link,
 	clear_delayed_call(&last->done);
 	nd->link_inode = inode;
 	last->seq = seq;
-	return 1;
+	return get_link(nd);
 }
 
 enum {WALK_FOLLOW = 1, WALK_MORE = 2, WALK_NOFOLLOW = 4};
@@ -1863,10 +1863,7 @@  static const char *step_into(struct nameidata *nd, int flags,
 		if (read_seqcount_retry(&path.dentry->d_seq, seq))
 			return ERR_PTR(-ECHILD);
 	}
-	err = pick_link(nd, &path, inode, seq);
-	if (err > 0)
-		return get_link(nd);
-	return ERR_PTR(err);
+	return pick_link(nd, &path, inode, seq);
 }
 
 static const char *walk_component(struct nameidata *nd, int flags)