[PATCH v2 0/9] btrfs: Fix no_space on dd and rm loop

[Zhaolei <zhaolei@cn.fujitsu.com>]

From: Zhao Lei <zhaolei@cn.fujitsu.com>

This is v2 of resend-fix-no-space.

Most of them are send in single patch, I resend them in patchset
to make it easy to access.

Notice that "Btrfs: fix find_free_dev_extent() malfunction in case
device tree has hole" from Forrest Liu in:
  https://patchwork.kernel.org/patch/5800231/
is also need to fix all known no_space bug.

Changelog v1->v2:
1: Rebased on top of v4.0-rc7
2: Fixed a lock problem reported by:
   'Tsutomu Itoh' <t-itoh@jp.fujitsu.com>
3: Add Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
   to [PATCH 2/9] btrfs:

Tested by busy dd and rm loop script in 2000 times.
I'll add xfstests for this case later.

This is available at fix_no_space branch on my tree:
  git://github.com/zhaoleidd/btrfs.git
It is also included in integration-for-chris branch in above tree.

Thanks
Zhaolei

Zhao Lei (9):
  btrfs: fix condition of commit transaction
  btrfs: Fix tail space processing in find_free_dev_extent()
  btrfs: Adjust commit-transaction condition to avoid NO_SPACE more
  btrfs: Set relative data on clear btrfs_block_group_cache->pinned
  btrfs: add WARN_ON() to check is space_info op current
  btrfs: Fix NO_SPACE bug caused by delayed-iput
  btrfs: Support busy loop of write and delete
  btrfs: wait for delayed iputs on no space
  btrfs: cleanup unused alloc_chunk varible

 fs/btrfs/ctree.h       |  1 +
 fs/btrfs/disk-io.c     |  3 ++-
 fs/btrfs/extent-tree.c | 66 +++++++++++++++++++++++++++++++++++++++-----------
 fs/btrfs/inode.c       |  4 +++
 fs/btrfs/volumes.c     | 24 +++++++++---------
 5 files changed, 72 insertions(+), 26 deletions(-)

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1.8.5.1