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Btrfs: Fix async caching interaction with unmount
- don't stop the caching thread until btrfs_commit_super return. - if caching is interrupted by umount, set last to (u64)-1. otherwise the un-scanned range of block group will be considered as free extent. Signed-off-by: Chris Mason <chris.mason@oracle.com>
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68b38550dd
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2 changed files with 6 additions and 1 deletions
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@ -2317,6 +2317,9 @@ int close_ctree(struct btrfs_root *root)
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printk(KERN_ERR "btrfs: commit super ret %d\n", ret);
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}
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fs_info->closing = 2;
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smp_mb();
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if (fs_info->delalloc_bytes) {
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printk(KERN_INFO "btrfs: at unmount delalloc count %llu\n",
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(unsigned long long)fs_info->delalloc_bytes);
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@ -288,8 +288,10 @@ static int caching_kthread(void *data)
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while (1) {
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smp_mb();
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if (block_group->fs_info->closing)
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if (block_group->fs_info->closing > 1) {
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last = (u64)-1;
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break;
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}
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leaf = path->nodes[0];
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slot = path->slots[0];
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