[PATCH 3/6] xfs: remove XFS_BUF_TO_AGFL

[Christoph Hellwig <hch@xxxxxx>]

Just dereference bp->b_addr directly and make the code a little
simpler and more clear.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---
 fs/xfs/libxfs/xfs_ag.c         | 2 +-
 fs/xfs/libxfs/xfs_alloc.c      | 7 ++++---
 fs/xfs/libxfs/xfs_format.h     | 1 -
 fs/xfs/scrub/agheader_repair.c | 3 +--
 4 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c
index 831bdd035900..32ceba66456f 100644
--- a/fs/xfs/libxfs/xfs_ag.c
+++ b/fs/xfs/libxfs/xfs_ag.c
@@ -291,7 +291,7 @@ xfs_agflblock_init(
 	struct xfs_buf		*bp,
 	struct aghdr_init_data	*id)
 {
-	struct xfs_agfl		*agfl = XFS_BUF_TO_AGFL(bp);
+	struct xfs_agfl		*agfl = bp->b_addr;
 	__be32			*agfl_bno;
 	int			bucket;
 
diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index f668e62acc56..58874150b0ce 100644
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@ -588,7 +588,7 @@ xfs_agfl_verify(
 	struct xfs_buf	*bp)
 {
 	struct xfs_mount *mp = bp->b_mount;
-	struct xfs_agfl	*agfl = XFS_BUF_TO_AGFL(bp);
+	struct xfs_agfl	*agfl = bp->b_addr;
 	__be32		*agfl_bno = xfs_buf_to_agfl_bno(bp);
 	int		i;
 
@@ -620,7 +620,7 @@ xfs_agfl_verify(
 			return __this_address;
 	}
 
-	if (!xfs_log_check_lsn(mp, be64_to_cpu(XFS_BUF_TO_AGFL(bp)->agfl_lsn)))
+	if (!xfs_log_check_lsn(mp, be64_to_cpu(agfl->agfl_lsn)))
 		return __this_address;
 	return NULL;
 }
@@ -656,6 +656,7 @@ xfs_agfl_write_verify(
 {
 	struct xfs_mount	*mp = bp->b_mount;
 	struct xfs_buf_log_item	*bip = bp->b_log_item;
+	struct xfs_agfl		*agfl = bp->b_addr;
 	xfs_failaddr_t		fa;
 
 	/* no verification of non-crc AGFLs */
@@ -669,7 +670,7 @@ xfs_agfl_write_verify(
 	}
 
 	if (bip)
-		XFS_BUF_TO_AGFL(bp)->agfl_lsn = cpu_to_be64(bip->bli_item.li_lsn);
+		agfl->agfl_lsn = cpu_to_be64(bip->bli_item.li_lsn);
 
 	xfs_buf_update_cksum(bp, XFS_AGFL_CRC_OFF);
 }
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index 11a450e00231..fe685ad91e0f 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -783,7 +783,6 @@ typedef struct xfs_agi {
  */
 #define XFS_AGFL_DADDR(mp)	((xfs_daddr_t)(3 << (mp)->m_sectbb_log))
 #define	XFS_AGFL_BLOCK(mp)	XFS_HDR_BLOCK(mp, XFS_AGFL_DADDR(mp))
-#define	XFS_BUF_TO_AGFL(bp)	((struct xfs_agfl *)((bp)->b_addr))
 
 struct xfs_agfl {
 	__be32		agfl_magicnum;
diff --git a/fs/xfs/scrub/agheader_repair.c b/fs/xfs/scrub/agheader_repair.c
index 68ee1ce1ae36..6da2e87d19a8 100644
--- a/fs/xfs/scrub/agheader_repair.c
+++ b/fs/xfs/scrub/agheader_repair.c
@@ -580,7 +580,7 @@ xrep_agfl_init_header(
 	__be32			*agfl_bno;
 	struct xfs_bitmap_range	*br;
 	struct xfs_bitmap_range	*n;
-	struct xfs_agfl		*agfl;
+	struct xfs_agfl		*agfl = agfl_bp->b_addr;
 	xfs_agblock_t		agbno;
 	unsigned int		fl_off;
 
@@ -590,7 +590,6 @@ xrep_agfl_init_header(
 	 * Start rewriting the header by setting the bno[] array to
 	 * NULLAGBLOCK, then setting AGFL header fields.
 	 */
-	agfl = XFS_BUF_TO_AGFL(agfl_bp);
 	memset(agfl, 0xFF, BBTOB(agfl_bp->b_length));
 	agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC);
 	agfl->agfl_seqno = cpu_to_be32(sc->sa.agno);
-- 
2.24.1