From 0f788c58194e4ccc5b3ab23f872c5e18542335e4 Mon Sep 17 00:00:00 2001
From: Liu Bo <bo.li.liu@oracle.com>
Date: Mon, 4 Mar 2013 16:25:40 +0000
Subject: Btrfs: do not BUG_ON on aborted situation
Btrfs balance can easily hit BUG_ON in these places, but we want
to it bail out gracefully after we force the whole filesystem to
readonly. So we use btrfs_std_error hook in place of BUG_ON.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
---
fs/btrfs/relocation.c | 6 +++++-
fs/btrfs/volumes.c | 9 +++++++--
2 files changed, 12 insertions(+), 3 deletions(-)
(limited to 'fs/btrfs')
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 9d13786eec73..3ebe87977aae 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3771,7 +3771,11 @@ static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
while (1) {
progress++;
trans = btrfs_start_transaction(rc->extent_root, 0);
- BUG_ON(IS_ERR(trans));
+ if (IS_ERR(trans)) {
+ err = PTR_ERR(trans);
+ trans = NULL;
+ break;
+ }
restart:
if (update_backref_cache(trans, &rc->backref_cache)) {
btrfs_end_transaction(trans, rc->extent_root);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 35bb2d4ed29f..9ff454df6756 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2379,7 +2379,11 @@ static int btrfs_relocate_chunk(struct btrfs_root *root,
return ret;
trans = btrfs_start_transaction(root, 0);
- BUG_ON(IS_ERR(trans));
+ if (IS_ERR(trans)) {
+ ret = PTR_ERR(trans);
+ btrfs_std_error(root->fs_info, ret);
+ return ret;
+ }
lock_chunks(root);
@@ -3050,7 +3054,8 @@ static void __cancel_balance(struct btrfs_fs_info *fs_info)
unset_balance_control(fs_info);
ret = del_balance_item(fs_info->tree_root);
- BUG_ON(ret);
+ if (ret)
+ btrfs_std_error(fs_info, ret);
atomic_set(&fs_info->mutually_exclusive_operation_running, 0);
}
--
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