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for-5.19-rc3-tag

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Merge tag 'for-5.19-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - print more error messages for invalid mount option values

 - prevent remount with v1 space cache for subpage filesystem

 - fix hang during unmount when block group reclaim task is running

* tag 'for-5.19-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: add error messages to all unrecognized mount options
  btrfs: prevent remounting to v1 space cache for subpage mount
  btrfs: fix hang during unmount when block group reclaim task is running
This commit is contained in:
Linus Torvalds 2022-06-21 12:06:04 -05:00
commit ff872b76b3
2 changed files with 51 additions and 9 deletions
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13
fs/btrfs/disk-io.c
View file

@ -4632,6 +4632,17 @@ void __cold close_ctree(struct btrfs_fs_info *fs_info)
int ret;
set_bit(BTRFS_FS_CLOSING_START, &fs_info->flags);
/*
* We may have the reclaim task running and relocating a data block group,
* in which case it may create delayed iputs. So stop it before we park
* the cleaner kthread otherwise we can get new delayed iputs after
* parking the cleaner, and that can make the async reclaim task to hang
* if it's waiting for delayed iputs to complete, since the cleaner is
* parked and can not run delayed iputs - this will make us hang when
* trying to stop the async reclaim task.
*/
cancel_work_sync(&fs_info->reclaim_bgs_work);
/*
* We don't want the cleaner to start new transactions, add more delayed
* iputs, etc. while we're closing. We can't use kthread_stop() yet
@ -4672,8 +4683,6 @@ void __cold close_ctree(struct btrfs_fs_info *fs_info)
cancel_work_sync(&fs_info->async_data_reclaim_work);
cancel_work_sync(&fs_info->preempt_reclaim_work);
cancel_work_sync(&fs_info->reclaim_bgs_work);
/* Cancel or finish ongoing discard work */
btrfs_discard_cleanup(fs_info);