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Btrfs: space leak tracepoints

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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>
This commit is contained in:
Josef Bacik
2012-01-10 10:31:31 -05:00
committed by Chris Mason
parent 90290e1982
commit 8c2a3ca20f
5 changed files with 119 additions and 20 deletions
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4
fs/btrfs/inode-map.c
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@@ -438,6 +438,8 @@ int btrfs_save_ino_cache(struct btrfs_root *root,
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 @@ again:
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;