btrfs: reduce block group critical section in btrfs_free_reserved_bytes()

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[ Upstream commit 8b6fa164ab ]

There's no need to update the space_info fields (bytes_reserved,
max_extent_size, bytes_readonly, bytes_zone_unusable) while holding the
block group's spinlock. So move those updates to happen after we unlock
the block group (and while holding the space_info locked of course), so
that all we do under the block group's critical section is to update the
block group itself.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Stable-dep-of: 5870ec7c8f ("btrfs: reset block group size class when it becomes empty")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Filipe Manana 2025-10-20 12:47:26 +01:00 • committed by Greg Kroah-Hartman

parent 38944f3c50

commit 74fcfce2a5

1 changed files with 9 additions and 6 deletions

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fs/btrfs/block-group.c

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