AcoSail/kernel_optimize_test
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nsfs: unobfuscate

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1) IS_ERR(p) && PTR_ERR(p) == -E... is spelled p == ERR_PTR(-E...)
2) yes, you can open-code do-while and sometimes there's even
a good reason to do so.  Not in this case, though.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2019-03-22 23:26:22 -04:00
parent ab1152dd56
commit 357ab5b5d2
1 changed files with 10 additions and 13 deletions
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23
fs/nsfs.c
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@ -105,17 +105,16 @@ static void *__ns_get_path(struct path *path, struct ns_common *ns)
void *ns_get_path_cb(struct path *path, ns_get_path_helper_t *ns_get_cb,
void *private_data)
{
struct ns_common *ns;
void *ret;
again:
ns = ns_get_cb(private_data);
if (!ns)
return ERR_PTR(-ENOENT);
do {
struct ns_common *ns = ns_get_cb(private_data);
if (!ns)
return ERR_PTR(-ENOENT);
ret = __ns_get_path(path, ns);
} while (ret == ERR_PTR(-EAGAIN));
ret = __ns_get_path(path, ns);
if (IS_ERR(ret) && PTR_ERR(ret) == -EAGAIN)
goto again;
return ret;
}
@ -154,7 +153,7 @@ int open_related_ns(struct ns_common *ns,
if (fd < 0)
return fd;
while (1) {
do {
struct ns_common *relative;
relative = get_ns(ns);
@ -164,10 +163,8 @@ int open_related_ns(struct ns_common *ns,
}
err = __ns_get_path(&path, relative);
if (IS_ERR(err) && PTR_ERR(err) == -EAGAIN)
continue;
break;
}
} while (err == ERR_PTR(-EAGAIN));
if (IS_ERR(err)) {
put_unused_fd(fd);
return PTR_ERR(err);