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authorDan Williams <dan.j.williams@intel.com>2008-07-28 23:10:39 -0700
committerDan Williams <dan.j.williams@intel.com>2008-07-28 17:52:37 -0700
commitdf10cfbc4d7ab93260d997df754219d390d62a9d (patch)
tree23908d827de85f16f9404875859e51babb966856 /drivers/md
parentd8e64406a037a64444175730294e449c9e21f5ec (diff)
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>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/raid5.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 46132fca3469..b428e15d59af 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -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;