]> git.baikalelectronics.ru Git - kernel.git/commit
btrfs: introduce helpers for subpage ordered status
authorQu Wenruo <wqu@suse.com>
Mon, 31 May 2021 08:50:45 +0000 (16:50 +0800)
committerDavid Sterba <dsterba@suse.com>
Mon, 21 Jun 2021 13:19:09 +0000 (15:19 +0200)
commit6f17400bd92e82ad549ea5374ffc71e35e2e4ee5
tree7c46040ebbc9ad82076931764e12a753277304d3
parent1e1de38792e0ae28ac4a07628f20e42536c9202b
btrfs: introduce helpers for subpage ordered status

This patch introduces the following functions to handle btrfs subpage
ordered (Private2) status:

- btrfs_subpage_set_ordered()
- btrfs_subpage_clear_ordered()
- btrfs_subpage_test_ordered()
  These helpers can only be called when the range is ensured to be
  inside the page.

- btrfs_page_set_ordered()
- btrfs_page_clear_ordered()
- btrfs_page_test_ordered()
  These helpers can handle both regular sector size and subpage without
  problem.

These functions are here to coordinate btrfs_invalidatepage() with
btrfs_writepage_endio_finish_ordered(), to make sure only one of those
functions can finish the ordered extent.

Tested-by: Ritesh Harjani <riteshh@linux.ibm.com> # [ppc64]
Tested-by: Anand Jain <anand.jain@oracle.com> # [aarch64]
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/subpage.c
fs/btrfs/subpage.h