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authorJosef Bacik <josef@toxicpanda.com>2018-09-28 07:18:02 -0400
committerDavid Sterba <dsterba@suse.com>2018-10-15 17:23:39 +0200
commit545e3366db823dc3342ca9d7fea803f829c9062f (patch)
treee3683a0c4c50fd3c7c760bf0692a29ea080c769f /fs/btrfs
parent553cceb49681d60975d00892877d4c871bf220f9 (diff)
downloadlinux-545e3366db823dc3342ca9d7fea803f829c9062f.tar.bz2
btrfs: make sure we create all new block groups
Allocating new chunks modifies both the extent and chunk tree, which can trigger new chunk allocations. So instead of doing list_for_each_safe, just do while (!list_empty()) so we make sure we don't exit with other pending bg's still on our list. CC: stable@vger.kernel.org # 4.4+ Reviewed-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Liu Bo <bo.liu@linux.alibaba.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/extent-tree.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index d68ee91c00fc..c4a1e8f028d3 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -10128,7 +10128,7 @@ error:
void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
- struct btrfs_block_group_cache *block_group, *tmp;
+ struct btrfs_block_group_cache *block_group;
struct btrfs_root *extent_root = fs_info->extent_root;
struct btrfs_block_group_item item;
struct btrfs_key key;
@@ -10136,7 +10136,10 @@ void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans)
bool can_flush_pending_bgs = trans->can_flush_pending_bgs;
trans->can_flush_pending_bgs = false;
- list_for_each_entry_safe(block_group, tmp, &trans->new_bgs, bg_list) {
+ while (!list_empty(&trans->new_bgs)) {
+ block_group = list_first_entry(&trans->new_bgs,
+ struct btrfs_block_group_cache,
+ bg_list);
if (ret)
goto next;