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btrfs: remove redundant log root tree index assignment during log sync

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During log syncing, when we start updating the log root tree we compute
an index value, stored in variable 'index2', once we lock the log root
tree's mutex. This value depends on the log root's log_transid. And
shortly after we compute again the same value for 'index2' - the value
is exactly the same since we haven't released the mutex and therefore
the log_transid of the log root is the same as before.

This second 'index2' computation became pointless after commit
a93e01682e ("btrfs: remove no longer needed use of log_writers for the
log root tree"). So remove it.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2023-10-09 13:01:43 +01:00 • committed by David Sterba
parent a666ce9bab
commit cc687c2ef4
1 changed files with 0 additions and 1 deletions
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fs/btrfs/tree-log.c
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@ -3016,7 +3016,6 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
goto out;
}
index2 = root_log_ctx.log_transid % 2;
if (atomic_read(&log_root_tree->log_commit[index2])) {
blk_finish_plug(&plug);
ret = btrfs_wait_tree_log_extents(log, mark);