A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 02:32:09 -04:00
Code Issues Projects Releases Packages Wiki Activity

kernel: trace: blktrace: remove redundent memcpy() in compat_blk_trace_setup()

Browse source 
do_blk_trace_setup() will fully initialize 'buts.name', so can remove
the related memcpy(). And also use BLKTRACE_BDEV_SIZE and ARRAY_SIZE
instead of hard code number '32'.

Signed-off-by: Chen Gang <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Chen Gang 2013-11-03 22:23:39 +08:00 • committed by Jens Axboe
commit f8c5e94486
2 changed files with 2 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

3
kernel/trace/blktrace.c
View file

@ -579,13 +579,12 @@ static int compat_blk_trace_setup(struct request_queue *q, char *name,
.end_lba = cbuts.end_lba,
.pid = cbuts.pid,
};
memcpy(&buts.name, &cbuts.name, 32);
ret = do_blk_trace_setup(q, name, dev, bdev, &buts);
if (ret)
return ret;
if (copy_to_user(arg, &buts.name, 32)) {
if (copy_to_user(arg, &buts.name, ARRAY_SIZE(buts.name))) {
blk_trace_remove(q);
return -EFAULT;
}