}
}
- /* Acquire the mm page semaphore. */
- down_read(¤t->mm->mmap_sem);
-
- err = get_user_pages((unsigned long int)(oper.indata + prev_ix),
+ err = get_user_pages_fast((unsigned long)(oper.indata + prev_ix),
noinpages,
- 0, /* read access only for in data */
- inpages,
- NULL);
+ false, /* read access only for in data */
+ inpages);
if (err < 0) {
- up_read(¤t->mm->mmap_sem);
nooutpages = noinpages = 0;
DEBUG_API(printk("cryptocop_ioctl_process: get_user_pages indata\n"));
goto error_cleanup;
}
noinpages = err;
- if (oper.do_cipher){
- err = get_user_pages((unsigned long int)oper.cipher_outdata,
+ if (oper.do_cipher) {
+ err = get_user_pages_fast((unsigned long)oper.cipher_outdata,
nooutpages,
- FOLL_WRITE, /* write access for out data */
- outpages,
- NULL);
- up_read(¤t->mm->mmap_sem);
+ true, /* write access for out data */
+ outpages);
if (err < 0) {
nooutpages = 0;
DEBUG_API(printk("cryptocop_ioctl_process: get_user_pages outdata\n"));
goto error_cleanup;
}
nooutpages = err;
- } else {
- up_read(¤t->mm->mmap_sem);
}
/* Add 6 to nooutpages to make room for possibly inserted buffers for storing digest and