[00/11] btrfs: fixes around swap file activation and cleanups

Message

Filipe Manana Dec. 11, 2024, 2:53 p.m. UTC

From: Filipe Manana <[e-mail]>

There are a couple issues with swap file activation, one being races with
memory mapped writes, while the other one is a failure due to buggy
detection of extent sharedness - we can often consider an extent as shared
when it is not but it used to be. The rest are just some cleanups or
enhancements.

Filipe Manana (11):
  btrfs: fix race with memory mapped writes when activating swap file
  btrfs: fix swap file activation failure due to extents that used to be shared
  btrfs: allow swap activation to be interruptible
  btrfs: avoid monopolizing a core when activating a swap file
  btrfs: remove no longer needed strict argument from can_nocow_extent()
  btrfs: remove the snapshot check from check_committed_ref()
  btrfs: avoid redundant call to get inline ref type at check_committed_ref()
  btrfs: simplify return logic at check_committed_ref()
  btrfs: simplify arguments for btrfs_cross_ref_exist()
  btrfs: add function comment for check_committed_ref()
  btrfs: add assertions and comment about path expectations to btrfs_cross_ref_exist()

 fs/btrfs/btrfs_inode.h |   2 +-
 fs/btrfs/direct-io.c   |   3 +-
 fs/btrfs/extent-tree.c | 127 ++++++++++++++++++++++++-----------
 fs/btrfs/extent-tree.h |   3 +-
 fs/btrfs/file.c        |   2 +-
 fs/btrfs/inode.c       | 146 +++++++++++++++++++++++++++++------------
 fs/btrfs/locking.h     |   5 ++
 7 files changed, 202 insertions(+), 86 deletions(-)