diff options
| author | David Sterba <dsterba@suse.com> | 2019-10-23 18:48:22 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-11-18 17:51:45 +0100 |
| commit | b3470b5dbe1300dea94191ae4b7d070be9a5cdc9 (patch) | |
| tree | 6afcb7969d6cb3c7f041da9eac5c3772d8470412 /fs/btrfs/volumes.c | |
| parent | btrfs: rename extent buffer block group item accessors (diff) | |
| download | linux-b3470b5dbe1300dea94191ae4b7d070be9a5cdc9.tar.xz linux-b3470b5dbe1300dea94191ae4b7d070be9a5cdc9.zip | |
btrfs: add dedicated members for start and length of a block group
The on-disk format of block group item makes use of the key that stores
the offset and length. This is further used in the code, although this
makes thing harder to understand. The key is also packed so the
offset/length is not properly aligned as u64.
Add start (key.objectid) and length (key.offset) members to block group
and remove the embedded key. When the item is searched or written, a
local variable for key is used.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/volumes.c')
| -rw-r--r-- | fs/btrfs/volumes.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 2a0637342f08..f534a6a5553e 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3194,16 +3194,16 @@ static int chunk_usage_range_filter(struct btrfs_fs_info *fs_info, u64 chunk_off if (bargs->usage_min == 0) user_thresh_min = 0; else - user_thresh_min = div_factor_fine(cache->key.offset, - bargs->usage_min); + user_thresh_min = div_factor_fine(cache->length, + bargs->usage_min); if (bargs->usage_max == 0) user_thresh_max = 1; else if (bargs->usage_max > 100) - user_thresh_max = cache->key.offset; + user_thresh_max = cache->length; else - user_thresh_max = div_factor_fine(cache->key.offset, - bargs->usage_max); + user_thresh_max = div_factor_fine(cache->length, + bargs->usage_max); if (user_thresh_min <= chunk_used && chunk_used < user_thresh_max) ret = 0; @@ -3225,10 +3225,9 @@ static int chunk_usage_filter(struct btrfs_fs_info *fs_info, if (bargs->usage_min == 0) user_thresh = 1; else if (bargs->usage > 100) - user_thresh = cache->key.offset; + user_thresh = cache->length; else - user_thresh = div_factor_fine(cache->key.offset, - bargs->usage); + user_thresh = div_factor_fine(cache->length, bargs->usage); if (chunk_used < user_thresh) ret = 0; |