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link_path_walk: split "return from recursive call" path

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2015-04-18 20:40:04 -04:00
parent 32cd74685c
commit 07681481b8
1 changed files with 17 additions and 23 deletions
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40
fs/namei.c
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@@ -1826,23 +1826,6 @@ static int link_path_walk(const char *name, struct nameidata *nd)
last->name = name;
name = s;
goto start;
back:
name = last->name;
if (unlikely(err)) {
put_link(nd, &last->link, last->cookie);
current->link_count--;
nd->depth--;
last--;
goto Err;
} else {
err = walk_component(nd, LOOKUP_FOLLOW);
put_link(nd, &last->link, last->cookie);
current->link_count--;
nd->depth--;
last--;
goto Walked;
}
}
}
if (!d_can_lookup(nd->path.dentry)) {
@@ -1852,13 +1835,24 @@ static int link_path_walk(const char *name, struct nameidata *nd)
}
terminate_walk(nd);
Err:
if (likely(!nd->depth))
return err;
goto back;
while (unlikely(nd->depth)) {
put_link(nd, &last->link, last->cookie);
current->link_count--;
nd->depth--;
last--;
}
return err;
OK:
if (likely(!nd->depth))
return 0;
goto back;
if (unlikely(nd->depth)) {
name = last->name;
err = walk_component(nd, LOOKUP_FOLLOW);
put_link(nd, &last->link, last->cookie);
current->link_count--;
nd->depth--;
last--;
goto Walked;
}
return 0;
}
static int path_init(int dfd, const struct filename *name, unsigned int flags,