Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-09 23:00:21 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

md/raid5: use do_div() for 64 bit divisions in raid5_sync_request

Browse Source 
We get compilation error on 32-bit architectures (e.g. m68k), as:

  ERROR: modpost: "__udivdi3" [drivers/md/raid456.ko] undefined!

Since 'sync_blocks' is defined as u64, use do_div() to fix this error.

Fixes: c911c46c017c ("md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*")
Signed-off-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
This commit is contained in:
Yufen Yu 2020-07-22 23:29:05 -04:00 committed by Song Liu
parent ef67744e7a
commit 83c3e5e17b
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/md/raid5.c
View File

@ -6104,7 +6104,7 @@ static inline sector_t raid5_sync_request(struct mddev *mddev, sector_t sector_n
!md_bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks, 1) &&
sync_blocks >= RAID5_STRIPE_SECTORS(conf)) {
/* we can skip this block, and probably more */
sync_blocks /= RAID5_STRIPE_SECTORS(conf);
do_div(sync_blocks, RAID5_STRIPE_SECTORS(conf));
*skipped = 1;
/* keep things rounded to whole stripes */
return sync_blocks * RAID5_STRIPE_SECTORS(conf);