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Merge tag 'md/4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md

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Pull MD fixes from Shaohua Li:

 - Fix a locking issue for md-cluster (Guoqing)

 - Fix a sync crash for raid10 (Ni)

 - Fix a reshape bug with raid5 cache enabled (me)

* tag 'md/4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
  md-cluster: release RESYNC lock after the last resync message
  RAID10 BUG_ON in raise_barrier when force is true and conf->barrier is 0
  md/raid5-cache: disable reshape completely
This commit is contained in:
Linus Torvalds 2018-09-07 12:15:37 -07:00
commit 3d0e7a9e00
4 changed files with 17 additions and 9 deletions
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10
drivers/md/md-cluster.c
View File

@ -1276,18 +1276,18 @@ static int resync_info_update(struct mddev *mddev, sector_t lo, sector_t hi)
static int resync_finish(struct mddev *mddev)
{
struct md_cluster_info *cinfo = mddev->cluster_info;
int ret = 0;
clear_bit(MD_RESYNCING_REMOTE, &mddev->recovery);
dlm_unlock_sync(cinfo->resync_lockres);
/*
* If resync thread is interrupted so we can't say resync is finished,
* another node will launch resync thread to continue.
*/
if (test_bit(MD_CLOSING, &mddev->flags))
return 0;
else
return resync_info_update(mddev, 0, 0);
if (!test_bit(MD_CLOSING, &mddev->flags))
ret = resync_info_update(mddev, 0, 0);
dlm_unlock_sync(cinfo->resync_lockres);
return ret;
}
static int area_resyncing(struct mddev *mddev, int direction,

5
drivers/md/raid10.c
View File

@ -4529,11 +4529,12 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr,
allow_barrier(conf);
}
raise_barrier(conf, 0);
read_more:
/* Now schedule reads for blocks from sector_nr to last */
r10_bio = raid10_alloc_init_r10buf(conf);
r10_bio->state = 0;
raise_barrier(conf, sectors_done != 0);
raise_barrier(conf, 1);
atomic_set(&r10_bio->remaining, 0);
r10_bio->mddev = mddev;
r10_bio->sector = sector_nr;
@ -4629,6 +4630,8 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr,
if (sector_nr <= last)
goto read_more;
lower_barrier(conf);
/* Now that we have done the whole section we can
* update reshape_progress
*/

5
drivers/md/raid5-log.h
View File

@ -46,6 +46,11 @@ extern int ppl_modify_log(struct r5conf *conf, struct md_rdev *rdev, bool add);
extern void ppl_quiesce(struct r5conf *conf, int quiesce);
extern int ppl_handle_flush_request(struct r5l_log *log, struct bio *bio);
static inline bool raid5_has_log(struct r5conf *conf)
{
return test_bit(MD_HAS_JOURNAL, &conf->mddev->flags);
}
static inline bool raid5_has_ppl(struct r5conf *conf)
{
return test_bit(MD_HAS_PPL, &conf->mddev->flags);

6
drivers/md/raid5.c
View File

@ -733,7 +733,7 @@ static bool stripe_can_batch(struct stripe_head *sh)
{
struct r5conf *conf = sh->raid_conf;
if (conf->log || raid5_has_ppl(conf))
if (raid5_has_log(conf) || raid5_has_ppl(conf))
return false;
return test_bit(STRIPE_BATCH_READY, &sh->state) &&
!test_bit(STRIPE_BITMAP_PENDING, &sh->state) &&
@ -7737,7 +7737,7 @@ static int raid5_resize(struct mddev *mddev, sector_t sectors)
sector_t newsize;
struct r5conf *conf = mddev->private;
if (conf->log || raid5_has_ppl(conf))
if (raid5_has_log(conf) || raid5_has_ppl(conf))
return -EINVAL;
sectors &= ~((sector_t)conf->chunk_sectors - 1);
newsize = raid5_size(mddev, sectors, mddev->raid_disks);
@ -7788,7 +7788,7 @@ static int check_reshape(struct mddev *mddev)
{
struct r5conf *conf = mddev->private;
if (conf->log || raid5_has_ppl(conf))
if (raid5_has_log(conf) || raid5_has_ppl(conf))
return -EINVAL;
if (mddev->delta_disks == 0 &&
mddev->new_layout == mddev->layout &&