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authorStefan Behrens <sbehrens@giantdisaster.de>2013-05-16 16:48:19 +0200
committerJosef Bacik <jbacik@fusionio.com>2013-05-18 03:40:36 +0200
commit3a6cad9009c85e29e83aafc8ac00b1dd5067fc5f (patch)
tree6f833c82426261bcc7588e048c1f2e00a878446d /fs/btrfs
parentbtrfs: do away with non-whole_page extent I/O (diff)
downloadlinux-3a6cad9009c85e29e83aafc8ac00b1dd5067fc5f.tar.xz
linux-3a6cad9009c85e29e83aafc8ac00b1dd5067fc5f.zip
Btrfs: explicitly use global_block_rsv for quota_tree
The quota_tree was set up to use the empty_block_rsv before which would be problematic when the filesystem is filled up and ENOSPC happens during internal operations while the quota tree is updated and COWed (when the btrfs_qgroup_info_item items) are written. In fact, use_block_rsv() which is used in btrfs_cow_block() falls back to the global_block_rsv in this case. But just in order to make it more clear what is happening, change it to explicitly use the global_block_rsv. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/extent-tree.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 42f5e6196021..df472ab1b5ac 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4564,6 +4564,8 @@ static void init_global_block_rsv(struct btrfs_fs_info *fs_info)
fs_info->csum_root->block_rsv = &fs_info->global_block_rsv;
fs_info->dev_root->block_rsv = &fs_info->global_block_rsv;
fs_info->tree_root->block_rsv = &fs_info->global_block_rsv;
+ if (fs_info->quota_root)
+ fs_info->quota_root->block_rsv = &fs_info->global_block_rsv;
fs_info->chunk_root->block_rsv = &fs_info->chunk_block_rsv;
update_global_block_rsv(fs_info);