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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2015-04-18 19:19:01 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-05-10 22:19:55 -0400 |
| commit | 12b0957800514535165f98efe7714f2a53bbfbb0 (patch) | |
| tree | d3cd61a9028eceec8d04eed23aaddbcd385b3e64 | |
| parent | link_path_walk: handle get_link() returning ERR_PTR() immediately (diff) | |
| download | linux-dev-12b0957800514535165f98efe7714f2a53bbfbb0.tar.xz linux-dev-12b0957800514535165f98efe7714f2a53bbfbb0.zip | |
link_path_walk: don't bother with walk_component() after jumping link
... it does nothing if nd->last_type is LAST_BIND.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/namei.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/namei.c b/fs/namei.c index 99374704c17d..ee083f921ef3 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1797,7 +1797,11 @@ static int link_path_walk(const char *name, struct nameidata *nd) return err; } err = 0; - if (likely(s)) { + if (unlikely(!s)) { + /* jumped */ + put_link(nd, &link, cookie); + break; + } else { if (*s == '/') { if (!nd->root.mnt) set_root(nd); @@ -1812,9 +1816,9 @@ static int link_path_walk(const char *name, struct nameidata *nd) put_link(nd, &link, cookie); break; } + err = walk_component(nd, LOOKUP_FOLLOW); + put_link(nd, &link, cookie); } - err = walk_component(nd, LOOKUP_FOLLOW); - put_link(nd, &link, cookie); } while (err > 0); current->link_count--; |