diff options
Diffstat (limited to 'mm/maccess.c')
| -rw-r--r-- | mm/maccess.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/mm/maccess.c b/mm/maccess.c index cbd1b3959af2..106820b33a2b 100644 --- a/mm/maccess.c +++ b/mm/maccess.c @@ -113,14 +113,11 @@ Efault: long copy_from_user_nofault(void *dst, const void __user *src, size_t size) { long ret = -EFAULT; - mm_segment_t old_fs = force_uaccess_begin(); - if (access_ok(src, size)) { pagefault_disable(); ret = __copy_from_user_inatomic(dst, src, size); pagefault_enable(); } - force_uaccess_end(old_fs); if (ret) return -EFAULT; @@ -140,14 +137,12 @@ EXPORT_SYMBOL_GPL(copy_from_user_nofault); long copy_to_user_nofault(void __user *dst, const void *src, size_t size) { long ret = -EFAULT; - mm_segment_t old_fs = force_uaccess_begin(); if (access_ok(dst, size)) { pagefault_disable(); ret = __copy_to_user_inatomic(dst, src, size); pagefault_enable(); } - force_uaccess_end(old_fs); if (ret) return -EFAULT; @@ -176,17 +171,14 @@ EXPORT_SYMBOL_GPL(copy_to_user_nofault); long strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr, long count) { - mm_segment_t old_fs; long ret; if (unlikely(count <= 0)) return 0; - old_fs = force_uaccess_begin(); pagefault_disable(); ret = strncpy_from_user(dst, unsafe_addr, count); pagefault_enable(); - force_uaccess_end(old_fs); if (ret >= count) { ret = count; @@ -216,14 +208,11 @@ long strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr, */ long strnlen_user_nofault(const void __user *unsafe_addr, long count) { - mm_segment_t old_fs; int ret; - old_fs = force_uaccess_begin(); pagefault_disable(); ret = strnlen_user(unsafe_addr, count); pagefault_enable(); - force_uaccess_end(old_fs); return ret; } |