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[PATCH] dm: log: rename complete_resync_work

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The complete_resync_work function only provides the ability to change an
out-of-sync region to in-sync.  This patch enhances the function to allow us
to change the status from in-sync to out-of-sync as well, something that is
needed when a mirror write to one of the devices or an initial resync on a
given region fails.

Signed-off-by: Jonathan E Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: dm-devel@redhat.com
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jonathan E Brassow 2006-12-08 02:41:11 -08:00 committed by Linus Torvalds
parent 31c93a0c29
commit f3ee6b2f62
3 changed files with 26 additions and 16 deletions
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15
drivers/md/dm-log.c
View File

@ -549,16 +549,19 @@ static int core_get_resync_work(struct dirty_log *log, region_t *region)
return 1;
}
static void core_complete_resync_work(struct dirty_log *log, region_t region,
int success)
static void core_set_region_sync(struct dirty_log *log, region_t region,
int in_sync)
{
struct log_c *lc = (struct log_c *) log->context;
log_clear_bit(lc, lc->recovering_bits, region);
if (success) {
if (in_sync) {
log_set_bit(lc, lc->sync_bits, region);
lc->sync_count++;
}
} else if (log_test_bit(lc->sync_bits, region)) {
lc->sync_count--;
log_clear_bit(lc, lc->sync_bits, region);
}
}
static region_t core_get_sync_count(struct dirty_log *log)
@ -625,7 +628,7 @@ static struct dirty_log_type _core_type = {
.mark_region = core_mark_region,
.clear_region = core_clear_region,
.get_resync_work = core_get_resync_work,
.complete_resync_work = core_complete_resync_work,
.set_region_sync = core_set_region_sync,
.get_sync_count = core_get_sync_count,
.status = core_status,
};
@ -644,7 +647,7 @@ static struct dirty_log_type _disk_type = {
.mark_region = core_mark_region,
.clear_region = core_clear_region,
.get_resync_work = core_get_resync_work,
.complete_resync_work = core_complete_resync_work,
.set_region_sync = core_set_region_sync,
.get_sync_count = core_get_sync_count,
.status = disk_status,
};

10
drivers/md/dm-log.h
View File

@ -90,12 +90,12 @@ struct dirty_log_type {
int (*get_resync_work)(struct dirty_log *log, region_t *region);
/*
* This notifies the log that the resync of an area has
* been completed. The log should then mark this region
* as CLEAN.
* This notifies the log that the resync status of a region
* has changed. It also clears the region from the recovering
* list (if present).
*/
void (*complete_resync_work)(struct dirty_log *log,
region_t region, int success);
void (*set_region_sync)(struct dirty_log *log,
region_t region, int in_sync);
/*
* Returns the number of regions that are in sync.

17
drivers/md/dm-raid1.c
View File

@ -344,6 +344,17 @@ static void dispatch_bios(struct mirror_set *ms, struct bio_list *bio_list)
}
}
static void complete_resync_work(struct region *reg, int success)
{
struct region_hash *rh = reg->rh;
rh->log->type->set_region_sync(rh->log, reg->key, success);
dispatch_bios(rh->ms, &reg->delayed_bios);
if (atomic_dec_and_test(&rh->recovery_in_flight))
wake_up_all(&_kmirrord_recovery_stopped);
up(&rh->recovery_count);
}
static void rh_update_states(struct region_hash *rh)
{
struct region *reg, *next;
@ -383,11 +394,7 @@ static void rh_update_states(struct region_hash *rh)
*/
list_for_each_entry_safe (reg, next, &recovered, list) {
rh->log->type->clear_region(rh->log, reg->key);
rh->log->type->complete_resync_work(rh->log, reg->key, 1);
dispatch_bios(rh->ms, &reg->delayed_bios);
if (atomic_dec_and_test(&rh->recovery_in_flight))
wake_up_all(&_kmirrord_recovery_stopped);
up(&rh->recovery_count);
complete_resync_work(reg, 1);
mempool_free(reg, rh->region_pool);
}