xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

md: remove 'go_faster' option from ->sync_request()

Browse Source 
This option is not well justified and testing suggests that
it hardly ever makes any difference.

The comment suggests there might be a need to wait for non-resync
activity indicated by ->nr_waiting, however raise_barrier()
already waits for all of that.

So just remove it to simplify reasoning about speed limiting.

This allows us to remove a 'FIXME' comment from raid5.c as that
never used the flag.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown
2015-02-19 16:04:40 +11:00
parent 50c37b136a
commit 09314799e4
5 changed files with 6 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/md/raid10.c
View File

@@ -2889,7 +2889,7 @@ static int init_resync(struct r10conf *conf)
*/
static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
int *skipped, int go_faster)
int *skipped)
{
struct r10conf *conf = mddev->private;
struct r10bio *r10_bio;
@@ -2994,12 +2994,6 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
if (conf->geo.near_copies < conf->geo.raid_disks &&
max_sector > (sector_nr | chunk_mask))
max_sector = (sector_nr | chunk_mask) + 1;
/*
* If there is non-resync activity waiting for us then
* put in a delay to throttle resync.
*/
if (!go_faster && conf->nr_waiting)
msleep_interruptible(1000);
/* Again, very different code for resync and recovery.
* Both must result in an r10bio with a list of bios that