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author | Arnd Bergmann <arnd@arndb.de> | 2022-02-11 23:42:45 +0300 |
---|---|---|
committer | Arnd Bergmann <arnd@arndb.de> | 2022-02-25 11:36:06 +0300 |
commit | 967747bbc084b93b54e66f9047d342232314cd25 (patch) | |
tree | 816678a5afa21612d3d420c2cd6fc61abc64cda1 /arch/alpha/include/asm/thread_info.h | |
parent | e5ef21d139957b8d064fefb7db42d1525605dd98 (diff) | |
download | linux-967747bbc084b93b54e66f9047d342232314cd25.tar.xz |
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 <sam@ravnborg.org> # for sparc32 changes
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Tested-by: Sergey Matyukevich <sergey.matyukevich@synopsys.com> # for arc changes
Acked-by: Stafford Horne <shorne@gmail.com> # [openrisc, asm-generic]
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/alpha/include/asm/thread_info.h')
-rw-r--r-- | arch/alpha/include/asm/thread_info.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/alpha/include/asm/thread_info.h b/arch/alpha/include/asm/thread_info.h index 2592356e3215..fdc485d7787a 100644 --- a/arch/alpha/include/asm/thread_info.h +++ b/arch/alpha/include/asm/thread_info.h @@ -19,7 +19,6 @@ struct thread_info { unsigned int flags; /* low level flags */ unsigned int ieee_state; /* see fpu.h */ - mm_segment_t addr_limit; /* thread address space */ unsigned cpu; /* current CPU */ int preempt_count; /* 0 => preemptable, <0 => BUG */ unsigned int status; /* thread-synchronous flags */ @@ -35,7 +34,6 @@ struct thread_info { #define INIT_THREAD_INFO(tsk) \ { \ .task = &tsk, \ - .addr_limit = KERNEL_DS, \ .preempt_count = INIT_PREEMPT_COUNT, \ } |