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Btrfs: fix multi-device code to use raid policies set by mkfs 

When reading in block groups, a global mask of the available raid policies
should be adjusted based on the types of block groups found on disk.  This
global mask is then used to decide which raid policy to use for new
block groups.

The recent allocator changes dropped the call that updated the global
mask, making all the block groups allocated at run time single striped
onto a single drive.

This also fixes the async worker threads to set any thread that uses
the requeue mechanism as busy.  This allows us to avoid blocking
on get_request_wait for the async bio submission threads.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2008-09-30 19:24:06 -04:00
parent 45b8c9a8b1
commit 75ccf47d13
2 changed files with 15 additions and 1 deletions
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14
fs/btrfs/async-thread.c
View File

@ -302,8 +302,20 @@ int btrfs_requeue_work(struct btrfs_work *work)
spin_lock_irqsave(&worker->lock, flags);
atomic_inc(&worker->num_pending);
list_add_tail(&work->list, &worker->pending);
check_busy_worker(worker);
/* by definition we're busy, take ourselves off the idle
* list
*/
if (worker->idle) {
spin_lock_irqsave(&worker->workers->lock, flags);
worker->idle = 0;
list_move_tail(&worker->worker_list,
&worker->workers->worker_list);
spin_unlock_irqrestore(&worker->workers->lock, flags);
}
spin_unlock_irqrestore(&worker->lock, flags);
out:
return 0;
}

2
fs/btrfs/extent-tree.c
View File

@ -5145,6 +5145,8 @@ int btrfs_read_block_groups(struct btrfs_root *root)
ret = btrfs_add_block_group_cache(root->fs_info, cache);
BUG_ON(ret);
set_avail_alloc_bits(root->fs_info, cache->flags);
}
ret = 0;
error: