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btrfs: prefix fsid to all trace events

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When using trace events to debug a problem, it's impossible to determine
which file system generated a particular event.  This patch adds a
macro to prefix standard information to the head of a trace event.

The extent_state alloc/free events are all that's left without an
fs_info available.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Jeff Mahoney
2016-06-09 17:27:55 -04:00
committed by David Sterba
parent cb001095ca
commit bc074524e1
6 changed files with 186 additions and 158 deletions
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2
fs/btrfs/super.c
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@@ -1171,7 +1171,7 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
struct btrfs_fs_info *fs_info = btrfs_sb(sb);
struct btrfs_root *root = fs_info->tree_root;
trace_btrfs_sync_fs(wait);
trace_btrfs_sync_fs(fs_info, wait);
if (!wait) {
filemap_flush(fs_info->btree_inode->i_mapping);