Commit f25784b3 authored by Yan Zheng's avatar Yan Zheng Committed by Chris Mason
Browse files

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: default avatarChris Mason <chris.mason@oracle.com>
parent 68b38550
......@@ -2317,6 +2317,9 @@ int close_ctree(struct btrfs_root *root)
printk(KERN_ERR "btrfs: commit super ret %d\n", ret);
}
fs_info->closing = 2;
smp_mb();
if (fs_info->delalloc_bytes) {
printk(KERN_INFO "btrfs: at unmount delalloc count %llu\n",
(unsigned long long)fs_info->delalloc_bytes);
......
......@@ -288,8 +288,10 @@ again:
while (1) {
smp_mb();
if (block_group->fs_info->closing)
if (block_group->fs_info->closing > 1) {
last = (u64)-1;
break;
}
leaf = path->nodes[0];
slot = path->slots[0];
......
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