Commit dd48d407 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: add tracepoints for outstanding extents mods 



This is handy for tracing problems with modifying the outstanding
extents counters.

Signed-off-by: default avatarJosef Bacik <jbacik@fb.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 8b62f87b

fs/btrfs/btrfs_inode.h

+2 −0
Original line number Diff line number Diff line
@@ -274,6 +274,8 @@ static inline void btrfs_mod_outstanding_extents(struct btrfs_inode *inode, 
	inode->outstanding_extents += mod;

	if (btrfs_is_free_space_inode(inode))

		return;

	trace_btrfs_inode_mod_outstanding_extents(inode->root, btrfs_ino(inode),

						  mod);

}



static inline void btrfs_mod_reserved_extents(struct btrfs_inode *inode, int mod)

include/trace/events/btrfs.h

+21 −0
Original line number Diff line number Diff line
@@ -1695,6 +1695,27 @@ DEFINE_EVENT(btrfs__prelim_ref, btrfs_prelim_ref_insert, 
	TP_ARGS(fs_info, oldref, newref, tree_size)

);



TRACE_EVENT(btrfs_inode_mod_outstanding_extents,

	TP_PROTO(struct btrfs_root *root, u64 ino, int mod),



	TP_ARGS(root, ino, mod),



	TP_STRUCT__entry_btrfs(

		__field(	u64, root_objectid	)

		__field(	u64, ino		)

		__field(	int, mod		)

	),



	TP_fast_assign_btrfs(root->fs_info,

		__entry->root_objectid	= root->objectid;

		__entry->ino		= ino;

		__entry->mod		= mod;

	),



	TP_printk_btrfs("root=%llu(%s) ino=%llu mod=%d",

			show_root_type(__entry->root_objectid),

			(unsigned long long)__entry->ino, __entry->mod)

);

#endif /* _TRACE_BTRFS_H */



/* This part must be outside protection */