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btrfs: locking: remove all the blocking helpers

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Now that we're using a rw_semaphore we no longer need to indicate if a
lock is blocking or not, nor do we need to flip the entire path from
blocking to spinning.  Remove these helpers and all the places they are
called.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2020-08-20 11:46:10 -04:00 • committed by David Sterba
parent 2ae0c2d80d
commit ac5887c8e0
15 changed files with 30 additions and 219 deletions
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10
fs/btrfs/backref.c
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@ -1341,14 +1341,12 @@ again:
goto out;
}
if (!path->skip_locking) {
if (!path->skip_locking)
btrfs_tree_read_lock(eb);
btrfs_set_lock_blocking_read(eb);
}
ret = find_extent_in_eb(eb, bytenr,
*extent_item_pos, &eie, ignore_offset);
if (!path->skip_locking)
btrfs_tree_read_unlock_blocking(eb);
btrfs_tree_read_unlock(eb);
free_extent_buffer(eb);
if (ret < 0)
goto out;
@ -1685,7 +1683,7 @@ char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path,
name_off, name_len);
if (eb != eb_in) {
if (!path->skip_locking)
btrfs_tree_read_unlock_blocking(eb);
btrfs_tree_read_unlock(eb);
free_extent_buffer(eb);
}
ret = btrfs_find_item(fs_root, path, parent, 0,
@ -1705,8 +1703,6 @@ char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path,
eb = path->nodes[0];
/* make sure we can use eb after releasing the path */
if (eb != eb_in) {
if (!path->skip_locking)
btrfs_set_lock_blocking_read(eb);
path->nodes[0] = NULL;
path->locks[0] = 0;
}