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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-05-03 21:16:35 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-05-10 22:20:06 -0400 |
| commit | dc7af8dc05bc46410b978dae14fda8414b65db30 (patch) | |
| tree | 380694adc5f0fdaa6dda47490e06641f5c53564d /fs/namei.c | |
| parent | 21c3003d36a8b6c54811bd87eb5f6fc830de9c82 (diff) | |
| download | lwn-dc7af8dc05bc46410b978dae14fda8414b65db30.tar.gz lwn-dc7af8dc05bc46410b978dae14fda8414b65db30.zip | |
link_path_walk: nd->depth massage, part 9
Make link_path_walk() work with any value of nd->depth on entry -
memorize it and use it in tests instead of comparing with 1.
Don't bother with increment/decrement in path_init().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/fs/namei.c b/fs/namei.c index 1f6195535206..bc6d67e1b00e 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1759,6 +1759,7 @@ static inline u64 hash_name(const char *name) static int link_path_walk(const char *name, struct nameidata *nd) { int err; + int orig_depth = nd->depth; while (*name=='/') name++; @@ -1867,11 +1868,11 @@ Walked: } terminate_walk(nd); Err: - while (unlikely(nd->depth > 1)) + while (unlikely(nd->depth > orig_depth)) put_link(nd); return err; OK: - if (unlikely(nd->depth > 1)) { + if (unlikely(nd->depth > orig_depth)) { name = nd->stack[nd->depth - 1].name; err = walk_component(nd, LOOKUP_FOLLOW); put_link(nd); @@ -1979,10 +1980,7 @@ static int path_init(int dfd, const struct filename *name, unsigned int flags, return -ECHILD; done: current->total_link_count = 0; - nd->depth++; - retval = link_path_walk(s, nd); - nd->depth--; - return retval; + return link_path_walk(s, nd); } static void path_cleanup(struct nameidata *nd) |