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authorHeinz Mauelshagen <heinzm@redhat.com>2019-10-01 17:47:55 +0200
committerMike Snitzer <snitzer@redhat.com>2019-11-05 14:04:37 -0500
commit53be73a5d75f477e52c9275ed7aa9307a8b73e5c (patch)
tree8c444c33071282722a2c27da19727952c1b3f149 /drivers/md/dm-raid.c
parentf9f3ee9130eb588c75e4a145837d4e6214947c40 (diff)
downloadlinux-53be73a5d75f477e52c9275ed7aa9307a8b73e5c.tar.bz2
dm raid: streamline rs_get_progress() and its raid_status() caller side
Pass already deciphered state into rs_get_progress, simplify recovery offset definition and combine two st_resync, st_reshape conditionals into one as is already the case with st_check and st_repair. Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-raid.c')
-rw-r--r--drivers/md/dm-raid.c47
1 files changed, 20 insertions, 27 deletions
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 3b99ef79dbe3..13fa90546a0f 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -3413,10 +3413,9 @@ static const char *__raid_dev_status(struct raid_set *rs, struct md_rdev *rdev)
/* Helper to return resync/reshape progress for @rs and runtime flags for raid set in sync / resynching */
static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
- sector_t resync_max_sectors)
+ enum sync_state state, sector_t resync_max_sectors)
{
sector_t r;
- enum sync_state state;
struct mddev *mddev = &rs->md;
clear_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
@@ -3427,8 +3426,6 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
} else {
- state = decipher_sync_action(mddev, recovery);
-
if (state == st_idle && !test_bit(MD_RECOVERY_INTR, &recovery))
r = mddev->recovery_cp;
else
@@ -3446,18 +3443,14 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
/*
* In case we are recovering, the array is not in sync
* and health chars should show the recovering legs.
+ *
+ * Already retrieved recovery offset from curr_resync_completed above.
*/
;
- else if (state == st_resync)
- /*
- * If "resync" is occurring, the raid set
- * is or may be out of sync hence the health
- * characters shall be 'a'.
- */
- set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags);
- else if (state == st_reshape)
+
+ else if (state == st_resync || state == st_reshape)
/*
- * If "reshape" is occurring, the raid set
+ * If "resync/reshape" is occurring, the raid set
* is or may be out of sync hence the health
* characters shall be 'a'.
*/
@@ -3471,22 +3464,22 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
*/
set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
- else {
- struct md_rdev *rdev;
-
+ else if (test_bit(MD_RECOVERY_NEEDED, &recovery))
/*
* We are idle and recovery is needed, prevent 'A' chars race
* caused by components still set to in-sync by constructor.
*/
- if (test_bit(MD_RECOVERY_NEEDED, &recovery))
- set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags);
+ set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags);
+ else {
/*
- * The raid set may be doing an initial sync, or it may
- * be rebuilding individual components. If all the
- * devices are In_sync, then it is the raid set that is
- * being initialized.
+ * We are idle and the raid set may be doing an initial
+ * sync, or it may be rebuilding individual components.
+ * If all the devices are In_sync, then it is the raid set
+ * that is being initialized.
*/
+ struct md_rdev *rdev;
+
set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
rdev_for_each(rdev, mddev)
if (!test_bit(Journal, &rdev->flags) &&
@@ -3519,7 +3512,7 @@ static void raid_status(struct dm_target *ti, status_type_t type,
unsigned int rebuild_disks;
unsigned int write_mostly_params = 0;
sector_t progress, resync_max_sectors, resync_mismatches;
- const char *sync_action;
+ enum sync_state state;
struct raid_type *rt;
switch (type) {
@@ -3533,14 +3526,14 @@ static void raid_status(struct dm_target *ti, status_type_t type,
/* Access most recent mddev properties for status output */
smp_rmb();
- recovery = rs->md.recovery;
/* Get sensible max sectors even if raid set not yet started */
resync_max_sectors = test_bit(RT_FLAG_RS_PRERESUMED, &rs->runtime_flags) ?
mddev->resync_max_sectors : mddev->dev_sectors;
- progress = rs_get_progress(rs, recovery, resync_max_sectors);
+ recovery = rs->md.recovery;
+ state = decipher_sync_action(mddev, recovery);
+ progress = rs_get_progress(rs, recovery, state, resync_max_sectors);
resync_mismatches = (mddev->last_sync_action && !strcasecmp(mddev->last_sync_action, "check")) ?
atomic64_read(&mddev->resync_mismatches) : 0;
- sync_action = sync_str(decipher_sync_action(&rs->md, recovery));
/* HM FIXME: do we want another state char for raid0? It shows 'D'/'A'/'-' now */
for (i = 0; i < rs->raid_disks; i++)
@@ -3568,7 +3561,7 @@ static void raid_status(struct dm_target *ti, status_type_t type,
* See Documentation/admin-guide/device-mapper/dm-raid.rst for
* information on each of these states.
*/
- DMEMIT(" %s", sync_action);
+ DMEMIT(" %s", sync_str(state));
/*
* v1.5.0+: