[42/79] link_path_walk: get rid of duplication
diff mbox

Message ID 1430803373-4948-42-git-send-email-viro@ZenIV.linux.org.uk
State New
Headers show

Commit Message

Al Viro May 5, 2015, 5:22 a.m. UTC
From: Al Viro <viro@zeniv.linux.org.uk>

What we do after the second walk_component() + put_link() + depth
decrement in there is exactly equivalent to what's done right
after the first walk_component().  Easy to verify and not at all
surprising, seeing that there we have just walked the last
component of nested symlink.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/namei.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

Comments

Linus Torvalds May 5, 2015, 3:10 p.m. UTC | #1
On Mon, May 4, 2015 at 10:22 PM, Al Viro <viro@zeniv.linux.org.uk> wrote:
> -l:

Ok, I guess this gets rid of the nasty badly-named label I complained about.

                       Linus
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Patch
diff mbox

diff --git a/fs/namei.c b/fs/namei.c
index d11165c..b740f6f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1763,6 +1763,7 @@  static int link_path_walk(const char *name, struct nameidata *nd)
 			return 0;
 
 		err = walk_component(nd, LOOKUP_FOLLOW);
+Walked:
 		if (err < 0)
 			return err;
 
@@ -1781,7 +1782,6 @@  static int link_path_walk(const char *name, struct nameidata *nd)
 			nd->depth++;
 			current->link_count++;
 
-l:
 			link = nd->link;
 			s = get_link(&link, nd, &cookie);
 
@@ -1818,13 +1818,7 @@  l:
 					put_link(nd, &link, cookie);
 					current->link_count--;
 					nd->depth--;
-					if (err < 0)
-						return err;
-					if (err > 0) {
-						current->link_count++;
-						nd->depth++;
-						goto l;
-					}
+					goto Walked;
 				}
 			}
 		}