Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-08 21:21:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

3 fixes for md in 3.6.

Browse Source 
One reverts a recent patch which turns out to not be such a good
 idea.
 Other two fix minor bugs with the new (since 3.3) 'replacement' code
 and have been tagged for -stable.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.18 (GNU/Linux)
 
 iQIVAwUAUFk0Xznsnt1WYoG5AQL/wg/+PgiYHPhz88Nw7pQIDMVtxVPjsf8YLhs/
 cFeIoTE13KQX+akiKORoFopIaon0hJLX48Hs+/WlrZmucJMLn/gmUhkwkcZs31As
 PrGLrLdz6cXue0GPTU5IP25lkbMRBsRV1U5k1pWuq9qWQv+Bjs1dXc1H1HekR3Lr
 WD4TdLz/Zg5fboADXVt6cSpAHL++eDdHOoqh7amMDzQfLf6Et9U1gaqTXeQMw70M
 /0+AubVmceYbP7uw1/haWii6/cLNtu7opE9dEvsHHkibdwcdSiOmsqMYCurjvd8p
 zYsaK/KcIWipfSpYsaDI1Sz4tYVc4UBQZCYgHJxv2ynnKRHHEDnrj1/hU86SRsmS
 YUEM5ENeLnXtmFMZH2Pro8c9x4ianv751uMCEt61HZs2572Rz5csZ0JgCSaScCVA
 PKldSe4AsyeGQsQ0lSjhza/zmx6uvy0mUrJFSd2lt8cMLvlcDfGihYG1ERjFf638
 kuIthP7NwtE/sM0cZtLkVvXfJdyUQDL2EGvJJIO4A4m1PJ07RzJ0KRU/g0jzi1Q8
 E63abhnTk7y7QpLtIH7Bv4DrDjdMvmfYFbprR/Mxz5D4RUOBxxj+HvD9EFwNG9oJ
 ufc/hnDQd7BYkMPFWrVuYxtByMYMdnhuiRSFUDCrMt81pxSLecxjDt1r9UOLT5Bo
 emAPezrzK/g=
 =dfcj
 -----END PGP SIGNATURE-----

Merge tag 'md-3.6-fixes' of git://neil.brown.name/md

Pull md fixes from NeilBrown:
 "3 fixes for md in 3.6.

  One reverts a recent patch which turns out to not be such a good idea.

  Other two fix minor bugs with the new (since 3.3) 'replacement' code
  and have been tagged for -stable."

* tag 'md-3.6-fixes' of git://neil.brown.name/md:
  md: make sure metadata is updated when spares are activated or removed.
  md/raid5: fix calculate of 'degraded' when a replacement becomes active.
  Revert "md/raid5: For odirect-write performance, do not set STRIPE_PREREAD_ACTIVE."
This commit is contained in:
Linus Torvalds 2012-09-19 11:01:38 -07:00
commit 4b92c17e1d
2 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/md/md.c
View File

@ -7619,6 +7619,8 @@ static int remove_and_add_spares(struct mddev *mddev)
}
}
}
if (removed)
set_bit(MD_CHANGE_DEVS, &mddev->flags);
return spares;
}
@ -7632,9 +7634,11 @@ static void reap_sync_thread(struct mddev *mddev)
!test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) {
/* success...*/
/* activate any spares */
if (mddev->pers->spare_active(mddev))
if (mddev->pers->spare_active(mddev)) {
sysfs_notify(&mddev->kobj, NULL,
"degraded");
set_bit(MD_CHANGE_DEVS, &mddev->flags);
}
}
if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) &&
mddev->pers->finish_reshape)

6
drivers/md/raid5.c
View File

@ -393,6 +393,8 @@ static int calc_degraded(struct r5conf *conf)
degraded = 0;
for (i = 0; i < conf->previous_raid_disks; i++) {
struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev);
if (rdev && test_bit(Faulty, &rdev->flags))
rdev = rcu_dereference(conf->disks[i].replacement);
if (!rdev || test_bit(Faulty, &rdev->flags))
degraded++;
else if (test_bit(In_sync, &rdev->flags))
@ -417,6 +419,8 @@ static int calc_degraded(struct r5conf *conf)
degraded2 = 0;
for (i = 0; i < conf->raid_disks; i++) {
struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev);
if (rdev && test_bit(Faulty, &rdev->flags))
rdev = rcu_dereference(conf->disks[i].replacement);
if (!rdev || test_bit(Faulty, &rdev->flags))
degraded2++;
else if (test_bit(In_sync, &rdev->flags))
@ -4192,7 +4196,7 @@ static void make_request(struct mddev *mddev, struct bio * bi)
finish_wait(&conf->wait_for_overlap, &w);
set_bit(STRIPE_HANDLE, &sh->state);
clear_bit(STRIPE_DELAYED, &sh->state);
if ((bi->bi_rw & REQ_NOIDLE) &&
if ((bi->bi_rw & REQ_SYNC) &&
!test_and_set_bit(STRIPE_PREREAD_ACTIVE, &sh->state))
atomic_inc(&conf->preread_active_stripes);
release_stripe_plug(mddev, sh);