xfs: reduce direct usage of mp->m_dir_geo

There are many places in the directory code were we don't pass the
args into and so have to extract the geometry direct from the mount
structure. Push the args or the geometry into these leaf functions
so that we don't need to grab it from the struct xfs_mount.

This, in turn, brings use to the point where directory geometry is
no longer a property of the struct xfs_mount; it is not a global
property anymore, and hence we can start to consider per-directory
configuration of physical geometries.

Start by converting the xfs_dir_isblock/leaf code - pass in the
xfs_da_args and convert the readdir code to use xfs_da_args like
the rest of the directory code to pass information around.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

1 files changed, 23 insertions, 27 deletions

diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c
index 97f1802a9018..07aa3907d237 100644
--- a/fs/xfs/xfs_dir2.c
+++ b/fs/xfs/xfs_dir2.c
@@ -282,7 +282,7 @@ xfs_dir_createname(
 		goto out_free;
 	}
 
-	rval = xfs_dir2_isblock(dp, &v);
+	rval = xfs_dir2_isblock(args, &v);
 	if (rval)
 		goto out_free;
 	if (v) {
@@ -290,7 +290,7 @@ xfs_dir_createname(
 		goto out_free;
 	}
 
-	rval = xfs_dir2_isleaf(dp, &v);
+	rval = xfs_dir2_isleaf(args, &v);
 	if (rval)
 		goto out_free;
 	if (v)
@@ -375,7 +375,7 @@ xfs_dir_lookup(
 		goto out_check_rval;
 	}
 
-	rval = xfs_dir2_isblock(dp, &v);
+	rval = xfs_dir2_isblock(args, &v);
 	if (rval)
 		goto out_free;
 	if (v) {
@@ -383,7 +383,7 @@ xfs_dir_lookup(
 		goto out_check_rval;
 	}
 
-	rval = xfs_dir2_isleaf(dp, &v);
+	rval = xfs_dir2_isleaf(args, &v);
 	if (rval)
 		goto out_free;
 	if (v)
@@ -448,7 +448,7 @@ xfs_dir_removename(
 		goto out_free;
 	}
 
-	rval = xfs_dir2_isblock(dp, &v);
+	rval = xfs_dir2_isblock(args, &v);
 	if (rval)
 		goto out_free;
 	if (v) {
@@ -456,7 +456,7 @@ xfs_dir_removename(
 		goto out_free;
 	}
 
-	rval = xfs_dir2_isleaf(dp, &v);
+	rval = xfs_dir2_isleaf(args, &v);
 	if (rval)
 		goto out_free;
 	if (v)
@@ -513,7 +513,7 @@ xfs_dir_replace(
 		goto out_free;
 	}
 
-	rval = xfs_dir2_isblock(dp, &v);
+	rval = xfs_dir2_isblock(args, &v);
 	if (rval)
 		goto out_free;
 	if (v) {
@@ -521,7 +521,7 @@ xfs_dir_replace(
 		goto out_free;
 	}
 
-	rval = xfs_dir2_isleaf(dp, &v);
+	rval = xfs_dir2_isleaf(args, &v);
 	if (rval)
 		goto out_free;
 	if (v)
@@ -573,7 +573,7 @@ xfs_dir_canenter(
 		goto out_free;
 	}
 
-	rval = xfs_dir2_isblock(dp, &v);
+	rval = xfs_dir2_isblock(args, &v);
 	if (rval)
 		goto out_free;
 	if (v) {
@@ -581,7 +581,7 @@ xfs_dir_canenter(
 		goto out_free;
 	}
 
-	rval = xfs_dir2_isleaf(dp, &v);
+	rval = xfs_dir2_isleaf(args, &v);
 	if (rval)
 		goto out_free;
 	if (v)
@@ -649,18 +649,16 @@ xfs_dir2_grow_inode(
  */
 int
 xfs_dir2_isblock(
-	xfs_inode_t	*dp,
-	int		*vp)		/* out: 1 is block, 0 is not block */
+	struct xfs_da_args	*args,
+	int			*vp)	/* out: 1 is block, 0 is not block */
 {
-	xfs_fileoff_t	last;		/* last file offset */
-	xfs_mount_t	*mp;
-	int		rval;
+	xfs_fileoff_t		last;	/* last file offset */
+	int			rval;
 
-	mp = dp->i_mount;
-	if ((rval = xfs_bmap_last_offset(dp, &last, XFS_DATA_FORK)))
+	if ((rval = xfs_bmap_last_offset(args->dp, &last, XFS_DATA_FORK)))
 		return rval;
-	rval = XFS_FSB_TO_B(mp, last) == mp->m_dir_geo->blksize;
-	ASSERT(rval == 0 || dp->i_d.di_size == mp->m_dir_geo->blksize);
+	rval = XFS_FSB_TO_B(args->dp->i_mount, last) == args->geo->blksize;
+	ASSERT(rval == 0 || args->dp->i_d.di_size == args->geo->blksize);
 	*vp = rval;
 	return 0;
 }
@@ -670,17 +668,15 @@ xfs_dir2_isblock(
  */
 int
 xfs_dir2_isleaf(
-	xfs_inode_t	*dp,
-	int		*vp)		/* out: 1 is leaf, 0 is not leaf */
+	struct xfs_da_args	*args,
+	int			*vp)	/* out: 1 is block, 0 is not block */
 {
-	xfs_fileoff_t	last;		/* last file offset */
-	xfs_mount_t	*mp;
-	int		rval;
+	xfs_fileoff_t		last;	/* last file offset */
+	int			rval;
 
-	mp = dp->i_mount;
-	if ((rval = xfs_bmap_last_offset(dp, &last, XFS_DATA_FORK)))
+	if ((rval = xfs_bmap_last_offset(args->dp, &last, XFS_DATA_FORK)))
 		return rval;
-	*vp = last == mp->m_dir_geo->leafblk + (1 << mp->m_sb.sb_dirblklog);
+	*vp = last == args->geo->leafblk + args->geo->fsbcount;
 	return 0;
 }