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md: do not progress the resync process if the stripe was blocked 

handle_stripe will take no action on a stripe when waiting for userspace
to unblock the array, so do not report completed sectors.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2008-07-28 23:10:39 -07:00
parent d8e64406a0
commit df10cfbc4d
1 changed files with 13 additions and 6 deletions
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19
drivers/md/raid5.c
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@ -2507,7 +2507,7 @@ static void handle_stripe_expansion(raid5_conf_t *conf, struct stripe_head *sh,
*
*/
static void handle_stripe5(struct stripe_head *sh)
static bool handle_stripe5(struct stripe_head *sh)
{
raid5_conf_t *conf = sh->raid_conf;
int disks = sh->disks, i;
@ -2755,9 +2755,11 @@ static void handle_stripe5(struct stripe_head *sh)
ops_run_io(sh, &s);
return_io(return_bi);
return blocked_rdev == NULL;
}
static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
static bool handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
{
raid6_conf_t *conf = sh->raid_conf;
int disks = sh->disks;
@ -2968,14 +2970,17 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
ops_run_io(sh, &s);
return_io(return_bi);
return blocked_rdev == NULL;
}
static void handle_stripe(struct stripe_head *sh, struct page *tmp_page)
/* returns true if the stripe was handled */
static bool handle_stripe(struct stripe_head *sh, struct page *tmp_page)
{
if (sh->raid_conf->level == 6)
handle_stripe6(sh, tmp_page);
return handle_stripe6(sh, tmp_page);
else
handle_stripe5(sh);
return handle_stripe5(sh);
}
@ -3691,7 +3696,9 @@ static inline sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *ski
clear_bit(STRIPE_INSYNC, &sh->state);
spin_unlock(&sh->lock);
handle_stripe(sh, NULL);
/* wait for any blocked device to be handled */
while(unlikely(!handle_stripe(sh, NULL)))
;
release_stripe(sh);
return STRIPE_SECTORS;