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btrfs: stop reading free space inodes from the commit root

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Free space inode data was only read when loading the v1 cache, which is
gone, so btrfs_get_extent() and btrfs_lookup_bio_sums() no longer need
to search the commit root for them.

Assisted-by: LLM
Signed-off-by: Tal Zussman <tz2294@columbia.edu>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Tal Zussman 2026-10-15 10:43:31 -04:00 committed by David Sterba
parent 86ba02e70d
commit a09f52a06d
2 changed files with 0 additions and 21 deletions
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11
fs/btrfs/file-item.c
View File

@ -396,17 +396,6 @@ int btrfs_lookup_bio_sums(struct btrfs_bio *bbio)
if (nblocks > fs_info->csums_per_leaf)
path->reada = READA_FORWARD;
/*
* the free space stuff is only read when it hasn't been
* updated in the current transaction. So, we can safely
* read from the commit root and sidestep a nasty deadlock
* between reading the free space cache and updating the csum tree.
*/
if (btrfs_is_free_space_inode(inode)) {
path->search_commit_root = true;
path->skip_locking = true;
}
/*
* If we are searching for a csum of an extent from a past
* transaction, we can search in the commit root and reduce

10
fs/btrfs/inode.c
View File

@ -7232,16 +7232,6 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
/* Chances are we'll be called again, so go ahead and do readahead */
path->reada = READA_FORWARD;
/*
* The same explanation in load_free_space_cache applies here as well,
* we only read when we're loading the free space cache, and at that
* point the commit_root has everything we need.
*/
if (btrfs_is_free_space_inode(inode)) {
path->search_commit_root = true;
path->skip_locking = true;
}
ret = btrfs_lookup_file_extent(NULL, root, path, objectid, start, 0);
if (ret < 0) {
goto out;