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btrfs: emit a warning about space cache v1 being deprecated

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We've been wanting to get rid of this for a while, add a message to
indicate that this feature is going away and when so we can finally have
a date when we're going to remove it.  The output looks like this

BTRFS warning (device nvme0n1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2

Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2024-07-29 11:05:48 -04:00 committed by David Sterba
parent 30479f31d4
commit 1e7bec1f7d
1 changed files with 4 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
fs/btrfs/super.c
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@ -683,8 +683,11 @@ bool btrfs_check_options(const struct btrfs_fs_info *info,
ret = false;
if (!test_bit(BTRFS_FS_STATE_REMOUNTING, &info->fs_state)) {
if (btrfs_raw_test_opt(*mount_opt, SPACE_CACHE))
if (btrfs_raw_test_opt(*mount_opt, SPACE_CACHE)) {
btrfs_info(info, "disk space caching is enabled");
btrfs_warn(info,
"space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2");
}
if (btrfs_raw_test_opt(*mount_opt, FREE_SPACE_TREE))
btrfs_info(info, "using free-space-tree");
}