brain-hackers_pepepper-mirror/linux-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/linux-brain.git synced 2024-06-09 23:36:23 +09:00
Code Issues Projects Releases Wiki Activity

bio: use offset_in_page macro

Browse Source 
Use offset_in_page macro instead of (addr & ~PAGE_MASK).

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Geliang Tang 2015-11-21 17:27:31 +08:00 committed by Jens Axboe
parent 1fe8f34841
commit bd5cecea43
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
block/bio.c
View File

@ -1125,7 +1125,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
int i, ret;
int nr_pages = 0;
unsigned int len = iter->count;
unsigned int offset = map_data ? map_data->offset & ~PAGE_MASK : 0;
unsigned int offset = map_data ? offset_in_page(map_data->offset) : 0;
for (i = 0; i < iter->nr_segs; i++) {
unsigned long uaddr;
@ -1304,7 +1304,7 @@ struct bio *bio_map_user_iov(struct request_queue *q,
goto out_unmap;
}
offset = uaddr & ~PAGE_MASK;
offset = offset_in_page(uaddr);
for (j = cur_page; j < page_limit; j++) {
unsigned int bytes = PAGE_SIZE - offset;