btrfs: zoned: introduce space_info->active_total_bytes

Browse source

[ Upstream commit 6a921de589 ]

The active_total_bytes, like the total_bytes, accounts for the total bytes
of active block groups in the space_info.

With an introduction of active_total_bytes, we can check if the reserved
bytes can be written to the block groups without activating a new block
group. The check is necessary for metadata allocation on zoned
filesystem. We cannot finish a block group, which may require waiting
for the current transaction, from the metadata allocation context.
Instead, we need to ensure the ongoing allocation (reserved bytes) fits
in active block groups.

Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Naohiro Aota 2022-07-09 08:18:45 +09:00 • committed by Greg Kroah-Hartman

parent 17aa1f2aa3

commit 33ed56fe55

4 changed files with 50 additions and 13 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

12

fs/btrfs/block-group.c

View file

41

fs/btrfs/space-info.c

View file

4

fs/btrfs/space-info.h

View file

6

fs/btrfs/zoned.c

View file