From: Xiao Ni xni@redhat.com
stable inclusion from stable-5.10.80 commit 2338c3501726895c1657adda2308fcf9e6f17449 bugzilla: 185821 https://gitee.com/openeuler/kernel/issues/I4L7CG
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 8b9e2291e355a0eafdd5b1e21a94a6659f24b351 ]
When the in memory flag is changed, we need to persist the change in the rdev superblock flags. This is needed for "writemostly" and "failfast".
Reviewed-by: Li Feng fengli@smartx.com Signed-off-by: Xiao Ni xni@redhat.com Signed-off-by: Song Liu songliubraving@fb.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Reviewed-by: Weilong Chen chenweilong@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com
Signed-off-by: Chen Jun chenjun102@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/md/md.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c index 75c6a82fa9aa..91a41a62c11f 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2985,7 +2985,11 @@ state_store(struct md_rdev *rdev, const char *buf, size_t len) * -write_error - clears WriteErrorSeen * {,-}failfast - set/clear FailFast */ + + struct mddev *mddev = rdev->mddev; int err = -EINVAL; + bool need_update_sb = false; + if (cmd_match(buf, "faulty") && rdev->mddev->pers) { md_error(rdev->mddev, rdev); if (test_bit(Faulty, &rdev->flags)) @@ -3000,7 +3004,6 @@ state_store(struct md_rdev *rdev, const char *buf, size_t len) if (rdev->raid_disk >= 0) err = -EBUSY; else { - struct mddev *mddev = rdev->mddev; err = 0; if (mddev_is_clustered(mddev)) err = md_cluster_ops->remove_disk(mddev, rdev); @@ -3017,10 +3020,12 @@ state_store(struct md_rdev *rdev, const char *buf, size_t len) } else if (cmd_match(buf, "writemostly")) { set_bit(WriteMostly, &rdev->flags); mddev_create_serial_pool(rdev->mddev, rdev, false); + need_update_sb = true; err = 0; } else if (cmd_match(buf, "-writemostly")) { mddev_destroy_serial_pool(rdev->mddev, rdev, false); clear_bit(WriteMostly, &rdev->flags); + need_update_sb = true; err = 0; } else if (cmd_match(buf, "blocked")) { set_bit(Blocked, &rdev->flags); @@ -3046,9 +3051,11 @@ state_store(struct md_rdev *rdev, const char *buf, size_t len) err = 0; } else if (cmd_match(buf, "failfast")) { set_bit(FailFast, &rdev->flags); + need_update_sb = true; err = 0; } else if (cmd_match(buf, "-failfast")) { clear_bit(FailFast, &rdev->flags); + need_update_sb = true; err = 0; } else if (cmd_match(buf, "-insync") && rdev->raid_disk >= 0 && !test_bit(Journal, &rdev->flags)) { @@ -3127,6 +3134,8 @@ state_store(struct md_rdev *rdev, const char *buf, size_t len) clear_bit(ExternalBbl, &rdev->flags); err = 0; } + if (need_update_sb) + md_update_sb(mddev, 1); if (!err) sysfs_notify_dirent_safe(rdev->sysfs_state); return err ? err : len;