diff mbox series

[1/5] xfs: compact deferred intent item structures

Message ID 163466953269.2235671.2810573391142102057.stgit@magnolia (mailing list archive)
State Accepted, archived
Headers show
Series xfs: use slab caches for deferred log items | expand

Commit Message

Darrick J. Wong Oct. 19, 2021, 6:52 p.m. UTC
From: Darrick J. Wong <djwong@kernel.org>

Rearrange these structs to reduce the amount of unused padding bytes.
This saves eight bytes for each of the three structs changed here, which
means they're now all (rmap/bmap are 64 bytes, refc is 32 bytes) even
powers of two.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 fs/xfs/libxfs/xfs_bmap.h     |    2 +-
 fs/xfs/libxfs/xfs_refcount.h |    2 +-
 fs/xfs/libxfs/xfs_rmap.h     |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

Comments

Chandan Babu R Oct. 20, 2021, 10:44 a.m. UTC | #1
On 20 Oct 2021 at 00:22, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
>
> Rearrange these structs to reduce the amount of unused padding bytes.
> This saves eight bytes for each of the three structs changed here, which
> means they're now all (rmap/bmap are 64 bytes, refc is 32 bytes) even
> powers of two.
>

Looks good to me.

Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>

> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
> ---
>  fs/xfs/libxfs/xfs_bmap.h     |    2 +-
>  fs/xfs/libxfs/xfs_refcount.h |    2 +-
>  fs/xfs/libxfs/xfs_rmap.h     |    2 +-
>  3 files changed, 3 insertions(+), 3 deletions(-)
>
>
> diff --git a/fs/xfs/libxfs/xfs_bmap.h b/fs/xfs/libxfs/xfs_bmap.h
> index 2cd7717cf753..db01fe83bb8a 100644
> --- a/fs/xfs/libxfs/xfs_bmap.h
> +++ b/fs/xfs/libxfs/xfs_bmap.h
> @@ -257,8 +257,8 @@ enum xfs_bmap_intent_type {
>  struct xfs_bmap_intent {
>  	struct list_head			bi_list;
>  	enum xfs_bmap_intent_type		bi_type;
> -	struct xfs_inode			*bi_owner;
>  	int					bi_whichfork;
> +	struct xfs_inode			*bi_owner;
>  	struct xfs_bmbt_irec			bi_bmap;
>  };
>  
> diff --git a/fs/xfs/libxfs/xfs_refcount.h b/fs/xfs/libxfs/xfs_refcount.h
> index 02cb3aa405be..894045968bc6 100644
> --- a/fs/xfs/libxfs/xfs_refcount.h
> +++ b/fs/xfs/libxfs/xfs_refcount.h
> @@ -32,8 +32,8 @@ enum xfs_refcount_intent_type {
>  struct xfs_refcount_intent {
>  	struct list_head			ri_list;
>  	enum xfs_refcount_intent_type		ri_type;
> -	xfs_fsblock_t				ri_startblock;
>  	xfs_extlen_t				ri_blockcount;
> +	xfs_fsblock_t				ri_startblock;
>  };
>  
>  void xfs_refcount_increase_extent(struct xfs_trans *tp,
> diff --git a/fs/xfs/libxfs/xfs_rmap.h b/fs/xfs/libxfs/xfs_rmap.h
> index fd67904ed446..85dd98ac3f12 100644
> --- a/fs/xfs/libxfs/xfs_rmap.h
> +++ b/fs/xfs/libxfs/xfs_rmap.h
> @@ -159,8 +159,8 @@ enum xfs_rmap_intent_type {
>  struct xfs_rmap_intent {
>  	struct list_head			ri_list;
>  	enum xfs_rmap_intent_type		ri_type;
> -	uint64_t				ri_owner;
>  	int					ri_whichfork;
> +	uint64_t				ri_owner;
>  	struct xfs_bmbt_irec			ri_bmap;
>  };
>
diff mbox series

Patch

diff --git a/fs/xfs/libxfs/xfs_bmap.h b/fs/xfs/libxfs/xfs_bmap.h
index 2cd7717cf753..db01fe83bb8a 100644
--- a/fs/xfs/libxfs/xfs_bmap.h
+++ b/fs/xfs/libxfs/xfs_bmap.h
@@ -257,8 +257,8 @@  enum xfs_bmap_intent_type {
 struct xfs_bmap_intent {
 	struct list_head			bi_list;
 	enum xfs_bmap_intent_type		bi_type;
-	struct xfs_inode			*bi_owner;
 	int					bi_whichfork;
+	struct xfs_inode			*bi_owner;
 	struct xfs_bmbt_irec			bi_bmap;
 };
 
diff --git a/fs/xfs/libxfs/xfs_refcount.h b/fs/xfs/libxfs/xfs_refcount.h
index 02cb3aa405be..894045968bc6 100644
--- a/fs/xfs/libxfs/xfs_refcount.h
+++ b/fs/xfs/libxfs/xfs_refcount.h
@@ -32,8 +32,8 @@  enum xfs_refcount_intent_type {
 struct xfs_refcount_intent {
 	struct list_head			ri_list;
 	enum xfs_refcount_intent_type		ri_type;
-	xfs_fsblock_t				ri_startblock;
 	xfs_extlen_t				ri_blockcount;
+	xfs_fsblock_t				ri_startblock;
 };
 
 void xfs_refcount_increase_extent(struct xfs_trans *tp,
diff --git a/fs/xfs/libxfs/xfs_rmap.h b/fs/xfs/libxfs/xfs_rmap.h
index fd67904ed446..85dd98ac3f12 100644
--- a/fs/xfs/libxfs/xfs_rmap.h
+++ b/fs/xfs/libxfs/xfs_rmap.h
@@ -159,8 +159,8 @@  enum xfs_rmap_intent_type {
 struct xfs_rmap_intent {
 	struct list_head			ri_list;
 	enum xfs_rmap_intent_type		ri_type;
-	uint64_t				ri_owner;
 	int					ri_whichfork;
+	uint64_t				ri_owner;
 	struct xfs_bmbt_irec			ri_bmap;
 };