Commit 457f1864 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: pretty print leaked root name 



I'm a actual human being so am incapable of converting u64 to s64 in my
head, so add a helper to get the pretty name of a root objectid and use
that helper to spit out the name for any special roots for leaked roots,
so I don't have to scratch my head and figure out which root I messed up
the refs for.

Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 66a2823c

fs/btrfs/disk-io.c

+4 −2
Original line number Diff line number Diff line
@@ -1503,10 +1503,12 @@ void btrfs_check_leaked_roots(struct btrfs_fs_info *fs_info) 
	struct btrfs_root *root;



	while (!list_empty(&fs_info->allocated_roots)) {

		char buf[BTRFS_ROOT_NAME_BUF_LEN];



		root = list_first_entry(&fs_info->allocated_roots,

					struct btrfs_root, leak_list);

		btrfs_err(fs_info, "leaked root %llu-%llu refcount %d",

			  root->root_key.objectid, root->root_key.offset,

		btrfs_err(fs_info, "leaked root %s refcount %d",

			  btrfs_root_name(root->root_key.objectid, buf),

			  refcount_read(&root->refs));

		while (refcount_read(&root->refs) > 1)

			btrfs_put_root(root);

fs/btrfs/print-tree.c

+38 −0
Original line number Diff line number Diff line
@@ -7,6 +7,44 @@ 
#include "disk-io.h"

#include "print-tree.h"



struct root_name_map {

	u64 id;

	char name[16];

};



static const struct root_name_map root_map[] = {

	{ BTRFS_ROOT_TREE_OBJECTID,		"ROOT_TREE"		},

	{ BTRFS_EXTENT_TREE_OBJECTID,		"EXTENT_TREE"		},

	{ BTRFS_CHUNK_TREE_OBJECTID,		"CHUNK_TREE"		},

	{ BTRFS_DEV_TREE_OBJECTID,		"DEV_TREE"		},

	{ BTRFS_FS_TREE_OBJECTID,		"FS_TREE"		},

	{ BTRFS_CSUM_TREE_OBJECTID,		"CSUM_TREE"		},

	{ BTRFS_TREE_LOG_OBJECTID,		"TREE_LOG"		},

	{ BTRFS_QUOTA_TREE_OBJECTID,		"QUOTA_TREE"		},

	{ BTRFS_UUID_TREE_OBJECTID,		"UUID_TREE"		},

	{ BTRFS_FREE_SPACE_TREE_OBJECTID,	"FREE_SPACE_TREE"	},

	{ BTRFS_DATA_RELOC_TREE_OBJECTID,	"DATA_RELOC_TREE"	},

};



const char *btrfs_root_name(u64 objectid, char *buf)

{

	int i;



	if (objectid == BTRFS_TREE_RELOC_OBJECTID) {

		snprintf(buf, BTRFS_ROOT_NAME_BUF_LEN,

			 "TREE_RELOC offset=%llu", objectid);

		return buf;

	}



	for (i = 0; i < ARRAY_SIZE(root_map); i++) {

		if (root_map[i].id == objectid)

			return root_map[i].name;

	}



	snprintf(buf, BTRFS_ROOT_NAME_BUF_LEN, "%llu", objectid);

	return buf;

}



static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)

{

	int num_stripes = btrfs_chunk_num_stripes(eb, chunk);

fs/btrfs/print-tree.h

+4 −0
Original line number Diff line number Diff line
@@ -6,7 +6,11 @@ 
#ifndef BTRFS_PRINT_TREE_H

#define BTRFS_PRINT_TREE_H



/* Buffer size to contain tree name and possibly additional data (offset) */

#define BTRFS_ROOT_NAME_BUF_LEN				48



void btrfs_print_leaf(struct extent_buffer *l);

void btrfs_print_tree(struct extent_buffer *c, bool follow);

const char *btrfs_root_name(u64 objectid, char *buf);



#endif

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