From: Filipe Manana <fdman...@suse.com> The following patchset fixes 2 bugs with the swapfile support, where we can end up falling back to COW when writing to an active swapfile. As a bonus, it makes the NOCOW write patch, for both buffered and direct IO, more efficient by avoiding doing repeated worked when checking if the target block group is read-only.
Filipe Manana (4): btrfs: avoid checking for RO block group twice during nocow writeback btrfs: fix race between writes to swap files and scrub btrfs: remove no longer used function btrfs_extent_readonly() btrfs: fix race between swap file activation and snapshot creation fs/btrfs/block-group.c | 33 ++++++++++++++++++++++++++++- fs/btrfs/block-group.h | 9 ++++++++ fs/btrfs/ctree.h | 6 +++++- fs/btrfs/extent-tree.c | 13 ------------ fs/btrfs/inode.c | 47 ++++++++++++++++++++++++++++++++++-------- fs/btrfs/scrub.c | 9 +++++++- 6 files changed, 92 insertions(+), 25 deletions(-) -- 2.28.0
