The radix root is primarily protected by the fs_roots_radix_lock, so use
that to lookup and get a ref on all of our fs roots in
btrfs_cleanup_fs_roots.
Signed-off-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
---
fs/btrfs/disk-io.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 42f352dfca45..73479b4bbf34 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3925,15 +3925,14 @@ int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info)
int i = 0;
int err = 0;
unsigned int ret = 0;
- int index;
while (1) {
- index = srcu_read_lock(&fs_info->subvol_srcu);
+ spin_lock(&fs_info->fs_roots_radix_lock);
ret = radix_tree_gang_lookup(&fs_info->fs_roots_radix,
(void **)gang, root_objectid,
ARRAY_SIZE(gang));
if (!ret) {
- srcu_read_unlock(&fs_info->subvol_srcu, index);
+ spin_unlock(&fs_info->fs_roots_radix_lock);
break;
}
root_objectid = gang[ret - 1]->root_key.objectid + 1;
@@ -3947,7 +3946,7 @@ int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info)
/* grab all the search result for later use */
gang[i] = btrfs_grab_root(gang[i]);
}
- srcu_read_unlock(&fs_info->subvol_srcu, index);
+ spin_unlock(&fs_info->fs_roots_radix_lock);
for (i = 0; i < ret; i++) {
if (!gang[i])
--
2.24.1
