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btrfs: switch extent_buffer::lock_nested to bool

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The member is tracking simple status of the lock, we can use bool for
that and make some room for further space reduction in the structure.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2018-08-24 16:31:17 +02:00
parent c79adfc085
commit ed1b4ed79d
3 changed files with 5 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

6
fs/btrfs/locking.c
View file

@ -172,7 +172,7 @@ again:
* called on a partly (write-)locked tree.
*/
BUG_ON(eb->lock_nested);
eb->lock_nested = 1;
eb->lock_nested = true;
read_unlock(&eb->lock);
return;
}
@ -261,7 +261,7 @@ void btrfs_tree_read_unlock(struct extent_buffer *eb)
* field only matters to the lock owner.
*/
if (eb->lock_nested && current->pid == eb->lock_owner) {
eb->lock_nested = 0;
eb->lock_nested = false;
return;
}
btrfs_assert_tree_read_locked(eb);
@ -282,7 +282,7 @@ void btrfs_tree_read_unlock_blocking(struct extent_buffer *eb)
* field only matters to the lock owner.
*/
if (eb->lock_nested && current->pid == eb->lock_owner) {
eb->lock_nested = 0;
eb->lock_nested = false;
return;
}
btrfs_assert_tree_read_locked(eb);