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| author | Josef Bacik <josef@redhat.com> | 2011-05-11 23:26:06 +0400 |
|---|---|---|
| committer | Josef Bacik <josef@redhat.com> | 2011-05-23 21:03:12 +0400 |
| commit | d82a6f1d7e8b61ed5996334d0db66651bb43641d (patch) | |
| tree | 5738ec75f7679bdc1b97aecbc5cad3464cc65541 /fs/btrfs/transaction.h | |
| parent | 7e2355ba1a11649f0b212a29fdb9f47476f1248e (diff) | |
| download | linux-d82a6f1d7e8b61ed5996334d0db66651bb43641d.tar.xz | |
Btrfs: kill BTRFS_I(inode)->block_group
Originally this was going to be used as a way to give hints to the allocator,
but frankly we can get much better hints elsewhere and it's not even used at all
for anything usefull. In addition to be completely useless, when we initialize
an inode we try and find a freeish block group to set as the inodes block group,
and with a completely full 40gb fs this takes _forever_, so I imagine with say
1tb fs this is just unbearable. So just axe the thing altoghether, we don't
need it and it saves us 8 bytes in the inode and saves us 500 microseconds per
inode lookup in my testcase. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Diffstat (limited to 'fs/btrfs/transaction.h')
| -rw-r--r-- | fs/btrfs/transaction.h | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h index 11c6efcd4ed2..da7289e06a82 100644 --- a/fs/btrfs/transaction.h +++ b/fs/btrfs/transaction.h @@ -47,7 +47,6 @@ struct btrfs_transaction { struct btrfs_trans_handle { u64 transid; - u64 block_group; u64 bytes_reserved; unsigned long use_count; unsigned long blocks_reserved; @@ -70,19 +69,6 @@ struct btrfs_pending_snapshot { struct list_head list; }; -static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans, - struct inode *inode) -{ - trans->block_group = BTRFS_I(inode)->block_group; -} - -static inline void btrfs_update_inode_block_group( - struct btrfs_trans_handle *trans, - struct inode *inode) -{ - BTRFS_I(inode)->block_group = trans->block_group; -} - static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans, struct inode *inode) { |