Btrfs: space leak tracepoints
This in addition to a script in my btrfs-tracing tree will help track down space
leaks when we're getting space left over in block groups on umount. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c
index f8962a9..213ffa8 100644
--- a/fs/btrfs/inode-map.c
+++ b/fs/btrfs/inode-map.c
@@ -438,6 +438,8 @@
trans->bytes_reserved);
if (ret)
goto out;
+ trace_btrfs_space_reservation(root->fs_info, "ino_cache", (u64)trans,
+ trans->bytes_reserved, 1);
again:
inode = lookup_free_ino_inode(root, path);
if (IS_ERR(inode) && PTR_ERR(inode) != -ENOENT) {
@@ -498,6 +500,8 @@
out_put:
iput(inode);
out_release:
+ trace_btrfs_space_reservation(root->fs_info, "ino_cache", (u64)trans,
+ trans->bytes_reserved, 0);
btrfs_block_rsv_release(root, trans->block_rsv, trans->bytes_reserved);
out:
trans->block_rsv = rsv;