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| author | Qu Wenruo <wqu@suse.com> | 2019-03-01 03:47:59 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-04-29 19:02:18 +0200 |
| commit | 43eb5f2975848743e5b14c5bef20f40d404a7a04 (patch) | |
| tree | 5f1e88f2b2f823221851a64feee831bed4bd204c /fs/btrfs/extent_io.c | |
| parent | btrfs: switch extent_io_tree::track_uptodate to bool (diff) | |
| download | linux-43eb5f2975848743e5b14c5bef20f40d404a7a04.tar.xz linux-43eb5f2975848743e5b14c5bef20f40d404a7a04.zip | |
btrfs: Introduce extent_io_tree::owner to distinguish different io_trees
Btrfs has the following different extent_io_trees used:
- fs_info::free_extents[2]
- btrfs_inode::io_tree - for both normal inodes and the btree inode
- btrfs_inode::io_failure_tree
- btrfs_transaction::dirty_pages
- btrfs_root::dirty_log_pages
If we want to trace changes in those trees, it will be pretty hard to
distinguish them.
Instead of using hard-to-read pointer address, this patch will introduce
a new member extent_io_tree::owner to track the owner.
This modification needs all the callers of extent_io_tree_init() to
accept a new parameter @owner.
This patch provides the basis for later trace events.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 139f2fe3092f..cfd2b237fd66 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -233,7 +233,8 @@ void __cold extent_io_exit(void) } void extent_io_tree_init(struct btrfs_fs_info *fs_info, - struct extent_io_tree *tree, void *private_data) + struct extent_io_tree *tree, unsigned int owner, + void *private_data) { tree->fs_info = fs_info; tree->state = RB_ROOT; @@ -241,6 +242,7 @@ void extent_io_tree_init(struct btrfs_fs_info *fs_info, tree->dirty_bytes = 0; spin_lock_init(&tree->lock); tree->private_data = private_data; + tree->owner = owner; } static struct extent_state *alloc_extent_state(gfp_t mask) |