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authorMark Fasheh <mfasheh@suse.com>2011-07-12 10:57:59 -0700
committerMark Fasheh <mfasheh@suse.com>2011-07-25 14:34:54 -0700
commit92b8e897f6e7ba4aa10037ebd8186f85d39330d0 (patch)
tree54988ee036e1dfe3297b0b4e0dfe6323568bf02e /fs
parent17e9f796bd92cddec17d781c459376f82340fa44 (diff)
downloadop-kernel-dev-92b8e897f6e7ba4aa10037ebd8186f85d39330d0.zip
op-kernel-dev-92b8e897f6e7ba4aa10037ebd8186f85d39330d0.tar.gz
btrfs: Don't BUG_ON alloc_path errors in find_next_chunk
I also removed the BUG_ON from error return of find_next_chunk in init_first_rw_device(). It turns out that the only caller of init_first_rw_device() also BUGS on any nonzero return so no actual behavior change has occurred here. do_chunk_alloc() also needed an update since it calls btrfs_alloc_chunk() which can now return -ENOMEM. Instead of setting space_info->full on any error from btrfs_alloc_chunk() I catch and return every error value _except_ -ENOSPC. Thanks goes to Tsutomu Itoh for pointing that issue out. Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/extent-tree.c4
-rw-r--r--fs/btrfs/volumes.c6
2 files changed, 8 insertions, 2 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index aa91773..f6af423 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3277,6 +3277,9 @@ again:
}
ret = btrfs_alloc_chunk(trans, extent_root, flags);
+ if (ret < 0 && ret != -ENOSPC)
+ goto out;
+
spin_lock(&space_info->lock);
if (ret)
space_info->full = 1;
@@ -3286,6 +3289,7 @@ again:
space_info->force_alloc = CHUNK_ALLOC_NO_FORCE;
space_info->chunk_alloc = 0;
spin_unlock(&space_info->lock);
+out:
mutex_unlock(&extent_root->fs_info->chunk_mutex);
return ret;
}
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 530a2fc..90d956c 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1037,7 +1037,8 @@ static noinline int find_next_chunk(struct btrfs_root *root,
struct btrfs_key found_key;
path = btrfs_alloc_path();
- BUG_ON(!path);
+ if (!path)
+ return -ENOMEM;
key.objectid = objectid;
key.offset = (u64)-1;
@@ -2663,7 +2664,8 @@ static noinline int init_first_rw_device(struct btrfs_trans_handle *trans,
ret = find_next_chunk(fs_info->chunk_root,
BTRFS_FIRST_CHUNK_TREE_OBJECTID, &chunk_offset);
- BUG_ON(ret);
+ if (ret)
+ return ret;
alloc_profile = BTRFS_BLOCK_GROUP_METADATA |
(fs_info->metadata_alloc_profile &
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