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Message-Id: <1431367690-5223-78-git-send-email-viro@ZenIV.linux.org.uk>
Date: Mon, 11 May 2015 19:07:38 +0100
From: Al Viro <viro@...IV.linux.org.uk>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Neil Brown <neilb@...e.de>, Christoph Hellwig <hch@...radead.org>,
linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH v3 078/110] namei: simpler treatment of symlinks with nothing other that / in the body
From: Al Viro <viro@...iv.linux.org.uk>
Instead of saving name and branching to OK:, where we'll immediately restore
it, and call walk_component() with WALK_PUT|WALK_GET and nd->last_type being
LAST_BIND, which is equivalent to put_link(nd), err = 0, we can just treat
that the same way we'd treat procfs-style "jump" symlinks - do put_link(nd)
and move on.
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
fs/namei.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/fs/namei.c b/fs/namei.c
index 678aeef..c5eb77a 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1865,11 +1865,13 @@ OK:
;
}
nd->inode = nd->path.dentry->d_inode;
- nd->stack[nd->depth - 1].name = name;
- if (!*s)
- goto OK;
- name = s;
- continue;
+ if (unlikely(!*s)) {
+ put_link(nd);
+ } else {
+ nd->stack[nd->depth - 1].name = name;
+ name = s;
+ continue;
+ }
}
}
if (!d_can_lookup(nd->path.dentry)) {
--
2.1.4
--
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