diff options
| author | Arnd Bergmann <[email protected]> | 2022-02-11 21:42:45 +0100 |
|---|---|---|
| committer | Arnd Bergmann <[email protected]> | 2022-02-25 09:36:06 +0100 |
| commit | 967747bbc084b93b54e66f9047d342232314cd25 (patch) | |
| tree | 816678a5afa21612d3d420c2cd6fc61abc64cda1 /lib/strnlen_user.c | |
| parent | e5ef21d139957b8d064fefb7db42d1525605dd98 (diff) | |
uaccess: remove CONFIG_SET_FS
There are no remaining callers of set_fs(), so CONFIG_SET_FS
can be removed globally, along with the thread_info field and
any references to it.
This turns access_ok() into a cheaper check against TASK_SIZE_MAX.
As CONFIG_SET_FS is now gone, drop all remaining references to
set_fs()/get_fs(), mm_segment_t, user_addr_max() and uaccess_kernel().
Acked-by: Sam Ravnborg <[email protected]> # for sparc32 changes
Acked-by: "Eric W. Biederman" <[email protected]>
Tested-by: Sergey Matyukevich <[email protected]> # for arc changes
Acked-by: Stafford Horne <[email protected]> # [openrisc, asm-generic]
Acked-by: Dinh Nguyen <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Diffstat (limited to 'lib/strnlen_user.c')
| -rw-r--r-- | lib/strnlen_user.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/strnlen_user.c b/lib/strnlen_user.c index 1616710b8a82..bffa0ebf9f8b 100644 --- a/lib/strnlen_user.c +++ b/lib/strnlen_user.c @@ -96,7 +96,7 @@ long strnlen_user(const char __user *str, long count) if (unlikely(count <= 0)) return 0; - max_addr = user_addr_max(); + max_addr = TASK_SIZE_MAX; src_addr = (unsigned long)untagged_addr(str); if (likely(src_addr < max_addr)) { unsigned long max = max_addr - src_addr; |