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btrfs: use own btree inode io_tree owner id

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Btree inode is special compared to all other inode extent io_trees,
although it has a btrfs inode, it doesn't have the track_uptodate bit at
all.

This means a lot of things like extent locking doesn't even need to be
applied to btree io tree.

Since it's so special, adds a new owner value for it to make debuging a
little easier.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2020-09-15 13:35:27 +08:00 committed by David Sterba
parent 6b613cc97f
commit 2c53a14dd3
3 changed files with 3 additions and 1 deletions
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2
fs/btrfs/disk-io.c
View File

@ -2062,7 +2062,7 @@ static void btrfs_init_btree_inode(struct btrfs_fs_info *fs_info)
RB_CLEAR_NODE(&BTRFS_I(inode)->rb_node);
extent_io_tree_init(fs_info, &BTRFS_I(inode)->io_tree,
IO_TREE_INODE_IO, inode);
IO_TREE_BTREE_INODE_IO, inode);
BTRFS_I(inode)->io_tree.track_uptodate = false;
extent_map_tree_init(&BTRFS_I(inode)->extent_tree);

1
fs/btrfs/extent-io-tree.h
View File

@ -40,6 +40,7 @@ struct io_failure_record;
enum {
IO_TREE_FS_PINNED_EXTENTS,
IO_TREE_FS_EXCLUDED_EXTENTS,
IO_TREE_BTREE_INODE_IO,
IO_TREE_INODE_IO,
IO_TREE_INODE_IO_FAILURE,
IO_TREE_RELOC_BLOCKS,

1
include/trace/events/btrfs.h
View File

@ -79,6 +79,7 @@ struct btrfs_space_info;
#define IO_TREE_OWNER \
EM( IO_TREE_FS_PINNED_EXTENTS, "PINNED_EXTENTS") \
EM( IO_TREE_FS_EXCLUDED_EXTENTS, "EXCLUDED_EXTENTS") \
EM( IO_TREE_BTREE_INODE_IO, "BTREE_INODE_IO") \
EM( IO_TREE_INODE_IO, "INODE_IO") \
EM( IO_TREE_INODE_IO_FAILURE, "INODE_IO_FAILURE") \
EM( IO_TREE_RELOC_BLOCKS, "RELOC_BLOCKS") \