[PATCH 12/17] btrfs: zoned: activate block group on allocation
From: Naohiro Aota <naohiro.aota@wdc.com>
Date: 2021-08-11 14:21:10
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
Activate a block group when trying to allocate an extent from it. We check read-only case and no space left case before trying to activate a block group not to consume the number of active zones uselessly. Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com> --- fs/btrfs/extent-tree.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 8dafb61c4946..ac367f1dc4e6 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c@@ -3773,6 +3773,18 @@ static int do_allocation_zoned(struct btrfs_block_group *block_group, if (skip) return 1; + /* Check RO and no space case before trying to activate it */ + spin_lock(&block_group->lock); + if (block_group->ro || + block_group->alloc_offset == block_group->zone_capacity) { + spin_unlock(&block_group->lock); + return 1; + } + spin_unlock(&block_group->lock); + + if (!btrfs_zone_activate(block_group)) + return 1; + spin_lock(&space_info->lock); spin_lock(&block_group->lock); spin_lock(&fs_info->treelog_bg_lock);
--
2.32.0