On Tue, Jun 18, 2024 at 07:35:04PM +0800, Junchao Sun wrote:
> By reordering the elements in the xfs_inode structure, we can
> reduce the padding needed on an x86_64 system by 8 bytes.
Does this result in denser packing of xfs_inode objects in the slab
page?
--D
> Signed-off-by: Junchao Sun <sunjunchao2870@xxxxxxxxx>
> ---
> fs/xfs/xfs_inode.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
> index 292b90b5f2ac..3239ae4e33d2 100644
> --- a/fs/xfs/xfs_inode.h
> +++ b/fs/xfs/xfs_inode.h
> @@ -40,8 +40,8 @@ typedef struct xfs_inode {
> /* Transaction and locking information. */
> struct xfs_inode_log_item *i_itemp; /* logging information */
> struct rw_semaphore i_lock; /* inode lock */
> - atomic_t i_pincount; /* inode pin count */
> struct llist_node i_gclist; /* deferred inactivation list */
> + atomic_t i_pincount; /* inode pin count */
>
> /*
> * Bitsets of inode metadata that have been checked and/or are sick.
> --
> 2.39.2
>
>
